Prof. Radek Zbořil, Ph.D.

2011

• R. Herchel, Z. Travnicek, and R. Zboril, “Tuning of the Critical Temperature in Iron(II) Spin-Crossover Materials
  Based on Bridging Polycyanidometallates: Pentacyanidonitrosylferrate(II)
  and Hexacyanidoplatinate(IV),” INORGANIC CHEMISTRY, vol. 50, iss. 24, pp. 12390-12392, 2011.
  [Bibtex]

  @article ISI:000297782200017,
  Author = Herchel, Radovan and Travnicek, Zdenek and Zboril, Radek,
  Title = Tuning of the Critical Temperature in Iron(II) Spin-Crossover Materials
     Based on Bridging Polycyanidometallates: Pentacyanidonitrosylferrate(II)
     and Hexacyanidoplatinate(IV),
  Journal = INORGANIC CHEMISTRY,
  Year = 2011,
  Volume = 50,
  Number = 24,
  Pages = 12390-12392,
  Month = DEC 19,
  Abstract = The reactions of iron(II) sulfate,
     4-amino-3,5-di-2-pyridyl-4H-1,2,4-triazole (abpt), and
     pentacyanidonitrosylferrate(II) or hexacyanidoplatinate(IV) resulted in
     the formation of one-dimensional iron(II) spin-crossover compounds
     [Fe(abpt)(2)(mu-Fe(CN)(5)(NO))](n) (1) and
     [Fe(abpt)(2)(mu-Pt(CN)(6))](n) (2) with the spin-transition critical
     temperature near or above room temperature accompanied by
     thermochromism. Furthermore, it has been proven that the critical
     temperature T(c) is influenced by the type of dianionic
     polycyanidometallate within the series of discussed systems, and it
     changes in the sequence of [Fe(CN)(5)(NO)](2-) < \Pt(CN)(6))](2-) <
     [Ni(CN)(4))](2-) approximate to [Pd(CN)(4))\(2-) approximate to
     [Pt(CN)(4))](2-).,
  DOI = 10.1021/ic201702j,
  ISSN = 0020-1669,
  Unique-ID = ISI:000297782200017,
  

• A. B. Bourlinos, R. Zboril, M. Kubala, P. Stathi, Y. Deligiannakis, M. A. Karakassides, T. A. Steriotis, and A. K. Stubos, "Fabrication of fluorescent nanodiamond@C core-shell hybrids via mild
  carbonization of sodium cholate-nanodiamond complexes," JOURNAL OF MATERIALS SCIENCE, vol. 46, iss. 24, pp. 7912-7916, 2011.
  [Bibtex]

  @article ISI:000295177200032,
  Author = Bourlinos, A. B. and Zboril, R. and Kubala, M. and Stathi, P. and
     Deligiannakis, Y. and Karakassides, M. A. and Steriotis, T. A. and
     Stubos, A. K.,
  Title = Fabrication of fluorescent nanodiamond@C core-shell hybrids via mild
     carbonization of sodium cholate-nanodiamond complexes,
  Journal = JOURNAL OF MATERIALS SCIENCE,
  Year = 2011,
  Volume = 46,
  Number = 24,
  Pages = 7912-7916,
  Month = DEC,
  DOI = 10.1007/s10853-011-5911-z,
  ISSN = 0022-2461,
  Unique-ID = ISI:000295177200032,
  

• J. Cuda, T. Kohout, J. Tucek, J. Haloda, J. Filip, R. Prucek, and R. Zboril, "Low-temperature magnetic transition in troilite: A simple marker for
  highly stoichiometric FeS systems," JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, vol. 116, 2011.
  [Bibtex]

  @article ISI:000297257000001,
  Author = Cuda, J. and Kohout, T. and Tucek, J. and Haloda, J. and Filip, J. and
     Prucek, R. and Zboril, R.,
  Title = Low-temperature magnetic transition in troilite: A simple marker for
     highly stoichiometric FeS systems,
  Journal = JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,
  Year = 2011,
  Volume = 116,
  Month = NOV 15,
  Abstract = Low-temperature magnetic evolution of troilite sample, extracted from
     the Cape York IIIA octahedrite meteorite, was investigated by employing
     macroscopic magnetic measurement, Mssbauer spectroscopy, scanning
     electron microscopy (SEM) and backscattered electrons (BSE) microscopy,
     X-ray diffraction (XRD), electron microprobe analysis (EMA), and atomic
     absorption spectrometry (AAS). The study identified a magnetic
     transition at approximate to 70 K manifested itself in a similar manner
     as previously reported for troilite from the Bruderheim L6 chondrite
     meteorite. The data show that this transition is unlikely driven by
     impurity such as chromite and seems to be rather an intrinsic property
     of troilite. In this study, we unambiguously exclude the relation of
     this transition to the structural rearrangement like the Morin
     transition in hematite. Similarly, in-field Mssbauer data do not support
     the change of the canting angle in the spin structure of FeS above and
     below the transition. Mssbauer, XRD, and magnetic data, newly measured
     also for troilite from the Bruderheim L6 chondrite, demonstrate that
     both studied troilite samples exhibit nearly the same magnetic and
     structural characteristics. Thus, the nature of the transition occurring
     at approximate to 70 K in both samples has identical characteristics and
     its detection can be used as a simple general marker for highly
     stoichiometric FeS systems.,
  DOI = 10.1029/2011JB008232,
  Article-Number = B11205,
  ISSN = 0148-0227,
  Unique-ID = ISI:000297257000001,
  

• O. Schneeweiss, J. Filip, B. David, R. Zboril, and M. Maslan, "Iron nanoparticles prepared from natural ferrihydrite precursors:
  kinetics and properties," JOURNAL OF NANOPARTICLE RESEARCH, vol. 13, iss. 11, SI, pp. 5677-5684, 2011.
  [Bibtex]

  @article ISI:000297351600012,
  Author = Schneeweiss, O. and Filip, J. and David, B. and Zboril, R. and Maslan,
     M.,
  Title = Iron nanoparticles prepared from natural ferrihydrite precursors:
     kinetics and properties,
  Journal = JOURNAL OF NANOPARTICLE RESEARCH,
  Year = 2011,
  Volume = 13,
  Number = 11, SI,
  Pages = 5677-5684,
  Month = NOV,
  Note = 10th International Conference on Nanostructured Materials (NANO), Rome,
     ITALY, SEP 13-17, 2010,
  Organization = Int Comm Nanostruct Mat,
  Abstract = Natural ferrihydrite was used as the precursors for the preparation of
     the nanocrystalline alpha-Fe powder using heat treatment in hydrogen
     atmosphere. Transformation temperatures were estimated from the
     temperature dependences of magnetic moment. Structure and phase
     composition of the precursors and the final powders were characterized
     by X-ray diffraction and Mossbauer spectroscopy. Magnetic properties
     were characterized according to hysteresis loop parameters. The kinetics
     of the transformation was described using Avrami relation applied on the
     data of the isothermal time dependence of magnetic moment measurements
     and subsequently the activation enthalpy of transformation was estimated
     using Arrhenius plots of their parameters. Comparison of the changes of
     activation enthalpies derived from a different temperature ranges
     indicates effects of different processes on formation of alpha-Fe
     nanoparticles.,
  DOI = 10.1007/s11051-011-0383-2,
  ISSN = 1388-0764,
  Unique-ID = ISI:000297351600012,
  

• D. A. Golovko, V. K. Sharma, O. V. Pavlova, E. A. Belyanovskaya, I. D. Golovko, V. I. Suprunovich, and R. Zboril, "Determination of submillimolar concentration of ferrate(VI) in alkaline
  solutions by amperometric titration," CENTRAL EUROPEAN JOURNAL OF CHEMISTRY, vol. 9, iss. 5, pp. 808-812, 2011.
  [Bibtex]

  @article ISI:000293020400006,
  Author = Golovko, Dmitriy A. and Sharma, Virender K. and Pavlova, Olga. V. and
     Belyanovskaya, Elena A. and Golovko, Igor D. and Suprunovich, Victoria
     I. and Zboril, Radek,
  Title = Determination of submillimolar concentration of ferrate(VI) in alkaline
     solutions by amperometric titration,
  Journal = CENTRAL EUROPEAN JOURNAL OF CHEMISTRY,
  Year = 2011,
  Volume = 9,
  Number = 5,
  Pages = 808-812,
  Month = OCT,
  Abstract = A new amperometric titration method was developed for quantitative
     determination of ferrate(VI) (Fe(VI)O(4) (2-)) in the
     7.06x10(-5)-5.73x10(-3) M concentration range. Chromium(III) hydroxide
     solution was used as the titrant. The diffusion current (Id) had a
     linear relationship with the concentration of ferrate(VI) and slopes
     were dependent on the concentration of NaOH. The amperometric titration
     could detect a lower concentration of ferrate(VI) than could
     potentiometric and colorimetric titrations. The method was applied
     successfully to determine concentrations of ferrate(VI), generated
     electrochemically, in strong alkaline solutions.,
  DOI = 10.2478/s11532-011-0069-8,
  ISSN = 1895-1066,
  Unique-ID = ISI:000293020400006,
  

• R. Herchel, J. Tucek, Z. Travnicek, D. Petridis, and R. Zboril, "Crystal Water Molecules as Magnetic Tuners in Molecular Metamagnets
  Exhibiting Antiferro-Ferro-Paramagnetic Transitions," INORGANIC CHEMISTRY, vol. 50, iss. 18, pp. 9153-9163, 2011.
  [Bibtex]

  @article ISI:000294699700054,
  Author = Herchel, Radovan and Tucek, Jiri and Travnicek, Zdenek and Petridis,
     Dimitris and Zboril, Radek,
  Title = Crystal Water Molecules as Magnetic Tuners in Molecular Metamagnets
     Exhibiting Antiferro-Ferro-Paramagnetic Transitions,
  Journal = INORGANIC CHEMISTRY,
  Year = 2011,
  Volume = 50,
  Number = 18,
  Pages = 9153-9163,
  Month = SEP 19,
  Abstract = We studied the effects of the number of crystal water molecules on the
     magnetic behavior of \[Ni(en)(2)](3)[Fe(CN)(6)](2)center dot
     xH(2)O\(n) (1-3) (where en = ethylenediamine and x = 3, 2, or 0)
     coordination polymers by (57)Fe Mossbauer spectroscopy, single-crystal
     X-ray diffraction, and magnetization measurements. Magnetic phase
     diagrams constructed for all three compounds indicate that they behave
     as metamagnets exhibiting very rare field-induced
     antiferro-ferro-paramagnetic transitions. The number of crystal water
     molecules has a major effect on the Neel temperature, critical field,
     and magnetic hardness of the compounds in the ferromagnetic state.
     Moreover, the systems behave as molecular magnetic sponges, changing
     their magnetic properties due to the controllable and reversible
     dehydration/hydration process.,
  DOI = 10.1021/ic201358c,
  ISSN = 0020-1669,
  Unique-ID = ISI:000294699700054,
  

• P. Dallas, V. K. Sharma, and R. Zboril, "Silver polymeric nanocomposites as advanced antimicrobial agents:
  Classification, synthetic paths, applications, and perspectives," ADVANCES IN COLLOID AND INTERFACE SCIENCE, vol. 166, iss. 1-2, pp. 119-135, 2011.
  [Bibtex]

  @article ISI:000293550200007,
  Author = Dallas, Panagiotis and Sharma, Virender K. and Zboril, Radek,
  Title = Silver polymeric nanocomposites as advanced antimicrobial agents:
     Classification, synthetic paths, applications, and perspectives,
  Journal = ADVANCES IN COLLOID AND INTERFACE SCIENCE,
  Year = 2011,
  Volume = 166,
  Number = 1-2,
  Pages = 119-135,
  Month = AUG 10,
  Abstract = Utilization of metallic nanoparticles in various biotechnological and
     medical applications represents one of the most extensively investigated
     areas of the current materials science. These advanced applications
     require the appropriate chemical functionalization of the nanoparticles
     with organic molecules or their incorporation in suitable polymer
     matrices. The intensified interest in polymer nanocomposites with silver
     nanoparticles is due to the high antimicrobial effect of nanosilver as
     well as the unique characteristics of polymers which include their
     excellent structural uniformity, multivalency, high degree of branching,
     miscellaneous morphologies and architectures, and highly variable
     chemical composition. In this review, we explore several aspects of
     antimicrobial polymer silver nanocomposites, giving special focus to the
     critical analysis of the reported synthetic routes including their
     advantages, drawbacks, possible improvements, and real applicability in
     antibacterial and antifungal therapy. A special attention is given to
     ``green'' synthetic routes exploiting the biopolymeric matrix and to
     the methods allowing preparing magnetically controllable antimicrobial
     polymers for targeting to an active place. The controversial mechanism
     of the action of silver against bacteria, fungi and yeasts as well as
     perspectives and new applications of silver polymeric nanocomposites is
     also briefly discussed. (C) 2011 Elsevier B.V. All rights reserved.,
  DOI = 10.1016/j.cis.2011.05.008,
  ISSN = 0001-8686,
  Unique-ID = ISI:000293550200007,
  

• J. Filip, R. A. Yngard, K. Siskova, Z. Marusak, V. Ettler, P. Sajdl, V. K. Sharma, and R. Zboril, "Mechanisms and Efficiency of the Simultaneous Removal of Metals and
  Cyanides by Using Ferrate(VI): Crucial Roles of Nanocrystalline
  Iron(III) Oxyhydroxides and Metal Carbonates," CHEMISTRY-A EUROPEAN JOURNAL, vol. 17, iss. 36, pp. 10097-10105, 2011.
  [Bibtex]

  @article ISI:000295357800031,
  Author = Filip, Jan and Yngard, Ria A. and Siskova, Karolina and Marusak, Zdenek
     and Ettler, Vojtech and Sajdl, Petr and Sharma, Virender K. and Zboril,
     Radek,
  Title = Mechanisms and Efficiency of the Simultaneous Removal of Metals and
     Cyanides by Using Ferrate(VI): Crucial Roles of Nanocrystalline
     Iron(III) Oxyhydroxides and Metal Carbonates,
  Journal = CHEMISTRY-A EUROPEAN JOURNAL,
  Year = 2011,
  Volume = 17,
  Number = 36,
  Pages = 10097-10105,
  Month = AUG,
  Abstract = The reaction of potassium ferrate(VI), K(2)FeO(4), with weak-acid
     dissociable cyanides-namely, K(2)[Zn(CN)(4)], K(2)[Cd(CN)(4)],
     K(2)[Ni(CN)(4)], and K(3)[Cu(CN)(4)]-results in the formation of
     iron(III) oxyhydroxide nanoparticles that differ in size, crystal
     structure, and surface area. During cyanide oxidation and the
     simultaneous reduction of iron(VI), zinc(II), copper(II), and
     cadmium(II), metallic ions are almost completely removed from solution
     due to their co-precipitation with the iron(III) oxyhydroxides including
     2-line ferrihydrite, 7-line ferrihydrite, and/or goethite. Based on the
     results of XRD, Mossbauer and IR spectroscopies, as well as TEM, X-ray
     photoelectron emission spectroscopy, and Brunauer-Emmett-Teller
     measurements, we suggest three scavenging mechanisms for the removal of
     metals including their incorporation into the ferrihydrite crystal
     structure, the formation of a separate phase, and their adsorption onto
     the precipitate surface. Zn and Cu are preferentially and almost
     completely incorporated into the crystal structure of the iron(III)
     oxyhydroxides; the formation of the Cd-bearing, X-ray amorphous phase,
     together with Cd carbonate is the principal mechanism of Cd removal.
     Interestingly, Ni remains predominantly in solution due to the key role
     of nickel(II) carbonate, which exhibits a solubility product constant
     several orders of magnitude higher than the carbonates of the other
     metals. Traces of Ni, identified in the iron(III) precipitate, are
     exclusively adsorbed onto the large surface area of nanoparticles. We
     discuss the relationship between the crystal structure of iron(III)
     oxyhydroxides and the mechanism of metal removal, as well as the linear
     relationship observed between the rate constant and the surface area of
     precipitates.,
  DOI = 10.1002/chem.201100711,
  ISSN = 0947-6539,
  Unique-ID = ISI:000295357800031,
  

• L. Machala, J. Tucek, and R. Zboril, "Polymorphous Transformations of Nanometric Iron(III) Oxide: A Review," CHEMISTRY OF MATERIALS, vol. 23, iss. 14, pp. 3255-3272, 2011.
  [Bibtex]

  @article ISI:000292850700001,
  Author = Machala, Libor and Tucek, Jiri and Zboril, Radek,
  Title = Polymorphous Transformations of Nanometric Iron(III) Oxide: A Review,
  Journal = CHEMISTRY OF MATERIALS,
  Year = 2011,
  Volume = 23,
  Number = 14,
  Pages = 3255-3272,
  Month = JUL 26,
  Abstract = There is great interest in iron oxides, especially in nanosized form,
     for both fundamental and practical reasons. Because of its polymorphism,
     iron(III) oxide (ferric oxide, Fe(2)O(3)) is one of the most interesting
     and potentially useful phases of the iron oxides. Each of the four
     different known crystalline Fe(2)O(3) polymorphs (alpha-, beta-, gamma-,
     and epsilon-Fe(2)O(3)) has unique biochemical, magnetic, catalytic, and
     other properties that make it suitable for specific technical and
     biomedical applications. High temperature treatment is a key step in
     most syntheses of iron(III) oxides but often triggers polymorphous
     transformations that result in the formation of undesired mixtures of
     Fe(2)O(3) polymorphs. It is therefore important to control the
     parameters that induce polymorphous transformations when seeking to
     prepare a given Fe(2)O(3) polymorph as a single phase; identifying and
     understanding these parameters is a major challenge in the study of the
     polymorphism of solid compounds. This review discusses the dependence of
     the mechanism and kinetics of the polymorphous transformations of
     Fe(2)O(3) on the intrinsic properties of the material (polymorph
     structure, particle size, particle morphology, surface coating, particle
     aggregation, incorporation of particles within a matrix) and external
     parameters of synthetic and/or natural conditions such as temperature,
     atmosphere, and pressure. The high-temperature and high-pressure induced
     transformations of Fe(2)O(3) are reviewed in detail. In addition, the
     question of whether different Fe(2)O(3) polymorphs are formed
     sequentially or simultaneously during thermal processes is discussed
     extensively, with reference to the experimental results that have been
     invoked to support these two different mechanisms. The use of selected
     analytical tools in studying the polymorphous transformations of
     Fe(2)O(3) is also discussed, with particular emphasis on in situ
     approaches. Finally, key objectives for future research in this area are
     highlighted: (i) the development of more sophisticated kinetic control
     of the gamma-Fe(2)O(3) -> epsilon-Fe(2)O(3) phase transformation; (ii)
     investigation of particle morphology changes during the polymorphous
     transformations of Fe(2)O(3); and (iii) the study of high-pressure
     induced phase transformations of Fe(2)O(3) polymorphs other than
     alpha-Fe(2)O(3).,
  DOI = 10.1021/cm200397g,
  ISSN = 0897-4756,
  Unique-ID = ISI:000292850700001,
  

• K. Siskova, K. Safarova, J. H. Seo, R. Zboril, and M. Mashlan, "Non-chemical approach toward 2D self-assemblies of Ag nanoparticles via
  cold plasma treatment of substrates," NANOTECHNOLOGY, vol. 22, iss. 27, 2011.
  [Bibtex]

  @article ISI:000291021200028,
  Author = Siskova, Karolina and Safarova, Klara and Seo, Jung Hwa and Zboril,
     Radek and Mashlan, Miroslav,
  Title = Non-chemical approach toward 2D self-assemblies of Ag nanoparticles via
     cold plasma treatment of substrates,
  Journal = NANOTECHNOLOGY,
  Year = 2011,
  Volume = 22,
  Number = 27,
  Month = JUL 8,
  Abstract = The nano-modification of selected substrates by means of atmospheric
     cold plasma treatment was exploited for the two-dimensional (2D)
     self-assembling of silver nanoparticles (Ag NPs). Such a useful
     combination of the cold plasma treatment of substrate surface and an
     immediate easy deposition of Ag NPs creating the 2D self-assemblies on
     the substrates is published for the first time, to the best of our
     knowledge. Except for the cold plasma treatment, mainly the following
     parameters influenced the resulting NP assemblies: the choice of solvent
     mixture, concentration of Ag NP dispersions, and the deposition
     technique. The 2D self-assemblies of Ag NPs, providing the same work
     function as a Ag electrode, were formed on the cold plasma-treated
     substrates when a drop-casting technique was employed. The possibility
     of an easy preparation of the Ag NP 2D self-assemblies on substrates
     without using any chemical agents and/or evaporating chamber could be
     exploited, e.g. in photovoltaic and light-emitting diode devices.,
  DOI = 10.1088/0957-4484/22/27/275601,
  Article-Number = 275601,
  ISSN = 0957-4484,
  Unique-ID = ISI:000291021200028,
  

• R. Prucek, J. Tucek, M. Kilianova, A. Panacek, L. Kvitek, J. Filip, M. Kolar, K. Tomankova, and R. Zboril, "The targeted antibacterial and antifungal properties of magnetic
  nanocomposite of iron oxide and silver nanoparticles," BIOMATERIALS, vol. 32, iss. 21, pp. 4704-4713, 2011.
  [Bibtex]

  @article ISI:000291571400003,
  Author = Prucek, Robert and Tucek, Jiri and Kilianova, Martina and Panacek, Ales
     and Kvitek, Libor and Filip, Jan and Kolar, Milan and Tomankova,
     Katerina and Zboril, Radek,
  Title = The targeted antibacterial and antifungal properties of magnetic
     nanocomposite of iron oxide and silver nanoparticles,
  Journal = BIOMATERIALS,
  Year = 2011,
  Volume = 32,
  Number = 21,
  Pages = 4704-4713,
  Month = JUL,
  Abstract = Two types of magnetic binary nanocomposites, Ag@Fe(3)O(4) and
     gamma-Fe(2)O(3)@Ag, were synthesized and characterized and their
     antibacterial activities were tested. As a magnetic component, Fe(3)O(4)
     (magnetite) nanoparticles with an average size of about 70 nm and
     monodisperse gamma-Fe(2)O(3) (maghemite) nanoparticles with an average
     size of 5 nm were used. Nanocomposites were prepared via in situ
     chemical reduction of silver ions by maltose in the presence of
     particular magnetic phase and molecules of polyacrylate serving as a
     spacer among iron oxide and silver nanoparticles. In the case of the
     Ag@Fe(3)O(4) nanocomposite, silver nanoparticles, caught at the surfaces
     of Fe(3)O(4) nanocrystals, were around 5 nm in a size. On the contrary,
     in the case of the gamma-Fe(2)O(3)@Ag nanocomposite, ultrafine
     gamma-Fe(2)O(3) nanoparticles surrounded silver nanoparticles ranging in
     a size between 20 and 40 nm. In addition, the molecules of polyacrylate
     in this nanocomposite type suppress considerably interparticle magnetic
     interactions as proved by magnetization measurements. Both synthesized
     nanocomposites exhibited very significant antibacterial and antifungal
     activities against ten tested bacterial strains (minimum inhibition
     concentrations (MIC) from 15.6 mg/L to 125 mg/L) and four candida
     species (MIC from 1.9 mg/L to 31.3 mg/L). Moreover, acute nanocomposite
     cytotoxicity against mice embryonal fibroblasts was observed at
     concentrations of higher than 430 mg/L (Ag@Fe(3)O(4)) and 292 mg/L
     (gamma-Fe(2)O(3)@Ag). With respect to the non-cytotoxic nature of the
     polyacrylate linker, both kinds of silver nanocomposites are well
     applicable for a targeted magnetic delivery of silver nanoparticles in
     medicinal and disinfection applications. (C) 2011 Elsevier Ltd. All
     rights reserved.,
  DOI = 10.1016/j.biomaterials.2011.03.039,
  ISSN = 0142-9612,
  Unique-ID = ISI:000291571400003,
  

• A. Panacek, R. Prucek, D. Safarova, M. Dittrich, J. Richtrova, K. Benickova, R. Zboril, and L. Kvitek, "Acute and Chronic Toxicity Effects of Silver Nanoparticles (NPs) on
  Drosophila melanogaster," ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 45, iss. 11, pp. 4974-4979, 2011.
  [Bibtex]

  @article ISI:000291128700045,
  Author = Panacek, Ales and Prucek, Robert and Safarova, Dana and Dittrich, Milan
     and Richtrova, Jana and Benickova, Katerina and Zboril, Radek and
     Kvitek, Libor,
  Title = Acute and Chronic Toxicity Effects of Silver Nanoparticles (NPs) on
     Drosophila melanogaster,
  Journal = ENVIRONMENTAL SCIENCE \& TECHNOLOGY,
  Year = 2011,
  Volume = 45,
  Number = 11,
  Pages = 4974-4979,
  Month = JUN 1,
  Abstract = The use of nanoscaled materials is rapidly increasing, however, their
     possible ecotoxicological effects are still not precisely known. This
     work constitutes the first complex study focused on in vivo evaluation
     of the acute and chronic toxic effects and toxic limits of silver
     nanoparticles (NPs) on the eukaryotic organism Drosophila melanogaster.
     For the purpose of this study, silver NPs were prepared in the form of
     solid dispersion using microencapsulation method, where mannitol was
     used as an encapsulation agent. This newly prepared solid dispersion
     with a high concentration of silver NPs was exploited to prepare the
     standard Drosophila culture medium at a silver concentration range from
     10 mg . L(-1) to 100 mg . L(-1) of Ag in the case of the acute toxicity
     testing and at a concentration equal to S mg . L in the case of the
     chronic toxicity testing. The acute toxic effect of silver NPs on
     Drosophila melanogaster was observed for the silver concentration equal
     to 20 mg . L(-1). At this silver concentration, 50\% of the tested flies
     were unable to leave the pupae, and they did not finish their
     developmental cycle. Chronic toxicity of silver NPs was assessed by a
     long-term exposure of overall eight filial generations of Drosophila
     melanogaster to silver NPs. The long-term exposure to silver NPs
     influenced the fertility of Drosophila during the first three filial
     generations, nevertheless the fecundity of flies in subsequent
     generations consequently increased up to the level of the flies from the
     control sample due to the adaptability of flies to the silver NPs
     exposure.,
  DOI = 10.1021/es104216b,
  ISSN = 0013-936X,
  Unique-ID = ISI:000291128700045,
  

• V. Prochazka, H. Stepankova, V. Chlan, J. Tucek, J. Cuda, K. Kouril, J. Filip, and R. Zboril, "Electric field gradient in FeTiO(3) by nuclear magnetic resonance and ab
  initio calculations," JOURNAL OF PHYSICS-CONDENSED MATTER, vol. 23, iss. 20, 2011.
  [Bibtex]

  @article ISI:000290212300014,
  Author = Prochazka, V. and Stepankova, H. and Chlan, V. and Tucek, J. and Cuda,
     J. and Kouril, K. and Filip, J. and Zboril, R.,
  Title = Electric field gradient in FeTiO(3) by nuclear magnetic resonance and ab
     initio calculations,
  Journal = JOURNAL OF PHYSICS-CONDENSED MATTER,
  Year = 2011,
  Volume = 23,
  Number = 20,
  Month = MAY 25,
  Abstract = Temperature dependence of nuclear magnetic resonance (NMR) spectra of
     (47)Ti and (49)Ti in polycrystalline ilmenite FeTiO(3) was measured in
     the range from 5 to 300 K under an external magnetic field of 9.401 T.
     NMR spectra collected between 300 and 77 K exhibit a resolved quadrupole
     splitting. The electric field gradient (EFG) tensor was evaluated for Ti
     nuclei and the ratio of (47)Ti and (49)Ti nuclear quadrupole moments was
     refined during the fitting procedure. Below 77 K, the fine structure of
     quadrupole splitting disappears due to the enormous increase of
     anisotropy.
     As a counterpart, ab initio calculations were performed using full
     potential augmented plane waves + local orbitals. The calculated EFG
     tensors for Ti and Fe were compared to the experimental ones evaluated
     from NMR and the Mossbauer spectroscopy experiments.,
  DOI = 10.1088/0953-8984/23/20/205503,
  Article-Number = 205503,
  ISSN = 0953-8984,
  Unique-ID = ISI:000290212300014,
  

• S. Klimkova, M. Cernik, L. Lacinova, J. Filip, D. Jancik, and R. Zboril, "Zero-valent iron nanoparticles in treatment of acid mine water from in
  situ uranium leaching," CHEMOSPHERE, vol. 82, iss. 8, pp. 1178-1184, 2011.
  [Bibtex]

  @article ISI:000287432100016,
  Author = Klimkova, Stepanka and Cernik, Miroslav and Lacinova, Lenka and Filip,
     Jan and Jancik, Dalibor and Zboril, Radek,
  Title = Zero-valent iron nanoparticles in treatment of acid mine water from in
     situ uranium leaching,
  Journal = CHEMOSPHERE,
  Year = 2011,
  Volume = 82,
  Number = 8,
  Pages = 1178-1184,
  Month = FEB,
  Abstract = Acid mine water from in situ chemical leaching of uranium (Straz pod
     Ralskem, Czech Republic) was treated in laboratory scale experiments by
     zero-valent iron nanoparticles (nZVI). For the first time, nZVI were
     applied for the treatment of the real acid water system containing the
     miscellaneous mixture of pollutants, where the various removal
     mechanisms occur simultaneously. Toxicity of the treated saline acid
     water is caused by major contaminants represented by aluminum and
     sulphates in a high concentration, as well as by microcontaminants like
     As, Be, Cd, Cr, Cu, Ni, U, V. and Zn. Laboratory batch experiments
     proved a significant decrease in concentrations of all the monitored
     pollutants due to an increase in pH and a decrease in
     oxidation-reduction potential related to an application of nZVI. The
     assumed mechanisms of contaminants removal include precipitation of
     cations in a lower oxidation state, precipitation caused by a simple pH
     increase and co-precipitation with the formed iron oxyhydroxides. The
     possibility to control the reaction kinetics through the nature of the
     surface stabilizing shell (polymer vs. FeO nano-layer) is discussed as
     an important practical aspect. (C) 2010 Elsevier Ltd. All rights
     reserved.,
  DOI = 10.1016/j.chemosphere.2010.11.075,
  ISSN = 0045-6535,
  Unique-ID = ISI:000287432100016,
  

• A. B. Bourlinos, M. A. Karakassides, P. Stathi, Y. Deligiannakis, R. Zboril, P. Dallas, T. A. Steriotis, A. K. Stubos, and C. Trapalis, "Pyrolytic formation of a carbonaceous solid for heavy metal adsorption," JOURNAL OF MATERIALS SCIENCE, vol. 46, iss. 4, pp. 975-982, 2011.
  [Bibtex]

  @article ISI:000286112900014,
  Author = Bourlinos, A. B. and Karakassides, M. A. and Stathi, P. and
     Deligiannakis, Y. and Zboril, R. and Dallas, P. and Steriotis, T. A. and
     Stubos, A. K. and Trapalis, C.,
  Title = Pyrolytic formation of a carbonaceous solid for heavy metal adsorption,
  Journal = JOURNAL OF MATERIALS SCIENCE,
  Year = 2011,
  Volume = 46,
  Number = 4,
  Pages = 975-982,
  Month = FEB,
  Abstract = The solid-state pyrolysis of acetylenedicarboxylic acid, monopotassium
     salt at 300 degrees C in air results in bulk quantities of a
     micron-sized yet macroporous oxidized carbon, which inherently possesses
     high content of metal-binding sites, such as carboxylate groups, free
     radicals, and ether/hydroxyl units. Besides its high oxygen content, the
     solid is stable in water and does not leach or disorient, while it also
     exhibits an appreciable thermal stability, at temperature exceeding 200
     degrees C in air. Several techniques including TEM/SEM, TGA,
     Raman/FT-IR, XPS, EPR, and potentiometric titrations were employed for
     the characterization of the solid. Furthermore, liquid phase adsorption
     experiments revealed that the material is an efficient heavy metal
     adsorbent due to the presence of diverse surface-accessible binding
     sites, showing unusually high metal uptake capacities for Pb(2+) and
     Cu(2+) ions (ca. 4.5 mmol g(-1)).,
  DOI = 10.1007/s10853-010-4854-0,
  ISSN = 0022-2461,
  Unique-ID = ISI:000286112900014,
  

• R. Herchel, Z. Travnicek, and R. Zboril, "Spin crossover behavior of a one-dimensional polymeric-chain compound
  \[Fe(abpt)(2)(mu-Ni(CN)(4))]center dot xH(2)O\(n) (x=0.5 -> 0):
  Synthesis, spectral, thermal and magnetic properties," INORGANICA CHIMICA ACTA, vol. 365, iss. 1, pp. 458-461, 2011.
  [Bibtex]

  @article ISI:000285624200068,
  Author = Herchel, Radovan and Travnicek, Zdenek and Zboril, Radek,
  Title = Spin crossover behavior of a one-dimensional polymeric-chain compound
     \[Fe(abpt)(2)(mu-Ni(CN)(4))]center dot xH(2)O\(n) (x=0.5 -> 0):
     Synthesis, spectral, thermal and magnetic properties,
  Journal = INORGANICA CHIMICA ACTA,
  Year = 2011,
  Volume = 365,
  Number = 1,
  Pages = 458-461,
  Month = JAN 15,
  Abstract = A one-dimensional polymeric-chain iron(II)-nickel(II) cyanido-bridged
     complex of the composition \[Fe(abpt)(2)(mu-Ni(CN)(4))]center dot
     0.5H(2)O\(n) (1.0.5H(2)O), where abpt =
     4-amino-3,5-di-2-pyridyl-4H-1,2,4-triazole, was prepared and
     characterized by elemental and thermal analyses, FTIR and (57)Fe
     Mossbauer spectroscopies, and magnetic measurements. The incomplete spin
     crossover phenomenon was observed with approximately 12\% of the frozen
     high-spin fraction at low temperatures and with the spin transition
     critical temperature above room temperature. (C) 2010 Elsevier B.V. All
     rights reserved.,
  DOI = 10.1016/j.ica.2010.08.030,
  ISSN = 0020-1693,
  Unique-ID = ISI:000285624200068,
  

• D. A. Golovko, V. K. Sharma, V. I. Suprunovich, O. V. Pavlova, I. D. Golovko, K. Bouzek, and R. Zboril, "A SIMPLE POTENTIOMETRIC TITRATION METHOD TO DETERMINE CONCENTRATION OF
  FERRATE(VI) IN STRONG ALKALINE SOLUTIONS," ANALYTICAL LETTERS, vol. 44, iss. 7, pp. 1333-1340, 2011.
  [Bibtex]

  @article ISI:000291643600015,
  Author = Golovko, Dmitriy A. and Sharma, Virender K. and Suprunovich, V. I. and
     Pavlova, O. V. and Golovko, I. D. and Bouzek, Karel and Zboril, Radek,
  Title = A SIMPLE POTENTIOMETRIC TITRATION METHOD TO DETERMINE CONCENTRATION OF
     FERRATE(VI) IN STRONG ALKALINE SOLUTIONS,
  Journal = ANALYTICAL LETTERS,
  Year = 2011,
  Volume = 44,
  Number = 7,
  Pages = 1333-1340,
  Abstract = A new potentiometric titration method using a Pt wire as an indicator
     electrode was developed for quantitative determination of ferrate(VI)
     (Fe(VI)O(4)(2-)) in the submillimolar to millimolar concentration range
     in a strong alkaline solution. A Ag/AgCl electrode was the reference
     electrode and the titrant used was chromium(III) hydroxide solution. The
     developed method is relatively simple and faster than the colorimetric
     titration technique. The method eliminates human error associated with
     the endpoint detection and increases accuracy of the results with
     respect to the colorimetric titration. The method was applied to study
     the decay of synthesized ferrate(VI) in alkaline solution.,
  DOI = 10.1080/00032719.2010.511748,
  ISSN = 0003-2719,
  Unique-ID = ISI:000291643600015,
  

• R. Prucek, A. Panacek, A. Fargasova, V. Ranc, V. Masek, L. Kvitek, and R. Zboril, "Re-crystallization of silver nanoparticles in a highly concentrated NaCl
  environment-a new substrate for surface enhanced IR-visible Raman
  spectroscopy," CRYSTENGCOMM, vol. 13, iss. 7, pp. 2242-2248, 2011.
  [Bibtex]

  @article ISI:000288562200014,
  Author = Prucek, Robert and Panacek, Ales and Fargasova, Ariana and Ranc, Vaclav
     and Masek, Vlastimil and Kvitek, Libor and Zboril, Radek,
  Title = Re-crystallization of silver nanoparticles in a highly concentrated NaCl
     environment-a new substrate for surface enhanced IR-visible Raman
     spectroscopy,
  Journal = CRYSTENGCOMM,
  Year = 2011,
  Volume = 13,
  Number = 7,
  Pages = 2242-2248,
  Abstract = The common approach of silver nanoparticles activation for surface
     enhanced Raman spectroscopy often exploits an addition of chloride ions,
     generally at low concentrations of about 0.1-10 mM in the final
     dispersion. For the first time, we report the applicability of a highly
     concentrated NaCl solution (final concentration of 400 mM) for the SERS
     activation of silver nanoparticles (similar to 30 nm). Microscopic,
     optical and particle size distribution measurements reveal the rapid and
     reproducible re-crystallization of the primary silver nanoparticles to
     one-order larger crystallites (similar to 400 nm) already after 15 min
     after NaCl addition. The crystal growth mechanism is discussed with
     respect to the proved essential role of oxygen in the reaction system.
     The specific action of chloride ions is demonstrated through a
     comparison with NaBr and NaI solutions of the identical concentrations,
     which do not induce the analogous crystallization process. The
     recrystallized silver particles are efficient in an enhancement of the
     Raman signal not only for visible (488 nm) but also for near infrared
     laser excitation (1064 nm) as illustrated with the representative
     spectra of adenine.,
  DOI = 10.1039/c0ce00776e,
  ISSN = 1466-8033,
  Unique-ID = ISI:000288562200014,
  

• K. Siskova, M. Kubala, P. Dallas, D. Jancik, A. Thorel, P. Ilik, and R. Zboril, "The effect of surface modification on the fluorescence and morphology of
  CdSe nanoparticles embedded in a 3D phosphazene-based matrix:
  nanowire-like quantum dots," JOURNAL OF MATERIALS CHEMISTRY, vol. 21, iss. 4, pp. 1086-1093, 2011.
  [Bibtex]

  @article ISI:000286110400023,
  Author = Siskova, Karolina and Kubala, Martin and Dallas, Panagiotis and Jancik,
     Dalibor and Thorel, Alain and Ilik, Petr and Zboril, Radek,
  Title = The effect of surface modification on the fluorescence and morphology of
     CdSe nanoparticles embedded in a 3D phosphazene-based matrix:
     nanowire-like quantum dots,
  Journal = JOURNAL OF MATERIALS CHEMISTRY,
  Year = 2011,
  Volume = 21,
  Number = 4,
  Pages = 1086-1093,
  Abstract = We have synthesized and characterized a new type of emissive
     nanocomposite material consisting of a 3D inorganic-organic
     phosphazene-based polymer and CdSe quantum dots (QDs). The materials
     uniquely combine and inherit the polymers 3D character and the QD
     fluorescence properties. Furthermore, we have proven that benzidine
     molecules are suitable surface-modifiers of QDs resulting in
     fluorescent, nearly spherical QDs arranged into the unique nanowire-like
     structure. Moreover, the benzidine-to-CdSe energy transfer has been
     observed which can be further exploited. Characterization of the
     as-synthesized materials has been performed by using UV-visible and
     FT-IR absorption spectroscopy, energy dispersive X-ray analysis (EDX),
     transmission electron microscopy (TEM), high resolution-transmission
     electron microscopy (HR-TEM), scanning electron microscopy (SEM),
     steady-state and time-resolved fluorescence measurements.,
  DOI = 10.1039/c0jm02360d,
  ISSN = 0959-9428,
  Unique-ID = ISI:000286110400023,
  

2010

• J. Tucek, R. Zboril, A. Namai, and S. Ohkoshi, "epsilon-Fe(2)O(3): An Advanced Nanomaterial Exhibiting Giant Coercive
  Field, Millimeter-Wave Ferromagnetic Resonance, and Magnetoelectric
  Coupling," CHEMISTRY OF MATERIALS, vol. 22, iss. 24, pp. 6483-6505, 2010.
  [Bibtex]

  @article ISI:000285429000001,
  Author = Tucek, Jiri and Zboril, Radek and Namai, Asuka and Ohkoshi, Shin-ichi,
  Title = epsilon-Fe(2)O(3): An Advanced Nanomaterial Exhibiting Giant Coercive
     Field, Millimeter-Wave Ferromagnetic Resonance, and Magnetoelectric
     Coupling,
  Journal = CHEMISTRY OF MATERIALS,
  Year = 2010,
  Volume = 22,
  Number = 24,
  Pages = 6483-6505,
  Month = DEC 28,
  Abstract = Nanosized iron oxides still attract significant attention within the
     scientific community, because of their application-promising properties.
     Among them, epsilon-Fe(2)O(3) constitutes a remarkable phase, taking
     pride in a giant coercive field at room temperature, significant
     ferromagnetic resonance, and coupled magnetoelectric features that are
     not observed in any other simple metal oxide phase. In this work, we
     review basic structural and magnetic characteristics of this
     extraordinary nanomaterial with an emphasis on questionable and
     unresolved issues raised during its intense research in the past years.
     We show how a combination of various experimental techniques brings
     essential and valuable information, with regard to understanding the
     physicochemical properties of the E-polymorph of Fe(2)O(3), which
     remained unexplored for a long period of time. In addition, we
     recapitulate a series of synthetic routes that lead to the formation of
     epsilon-Fe(2)O(3), highlighting their advantages and drawbacks. We also
     demonstrate how magnetic properties of epsilon-Fe(2)O(3) can be tuned
     through the exploitation of various morphologies of epsilon-Fe(2)O(3)
     nanosystems, the alignment of epsilon-Fe(2)O(3) nanoobjects in a
     supporting matrix, and various degrees of cation substitution. Based on
     the current knowledge of the scientific community working in the field
     of epsilon-Fe(2)O(3), we finally arrive at two main future challenges:
     (i) the search for optimal synthetic conditions to prepare single-phase
     epsilon-Fe(2)O(3) with a high yield, desired size, morphology, and
     stability; and (ii) the search for a correct description of the magnetic
     behavior of epsilon-Fe(2)O(3) at temperatures below the characteristic
     magnetic ordering temperature.,
  DOI = 10.1021/cm101967h,
  ISSN = 0897-4756,
  Unique-ID = ISI:000285429000001,
  

• R. Zboril, F. Karlicky, A. B. Bourlinos, T. A. Steriotis, A. K. Stubos, V. Georgakilas, K. Safarova, D. Jancik, C. Trapalis, and M. Otyepka, "Graphene Fluoride: A Stable Stoichiometric Graphene Derivative and its
  Chemical Conversion to Graphene," SMALL, vol. 6, iss. 24, pp. 2885-2891, 2010.
  [Bibtex]

  @article ISI:000285793900015,
  Author = Zboril, Radek and Karlicky, Frantisek and Bourlinos, Athanasios B. and
     Steriotis, Theodore A. and Stubos, Athanasios K. and Georgakilas,
     Vasilios and Safarova, Klara and Jancik, Dalibor and Trapalis, Christos
     and Otyepka, Michal,
  Title = Graphene Fluoride: A Stable Stoichiometric Graphene Derivative and its
     Chemical Conversion to Graphene,
  Journal = SMALL,
  Year = 2010,
  Volume = 6,
  Number = 24,
  Pages = 2885-2891,
  Month = DEC 20,
  Abstract = Stoichoimetric graphene fluoride monolayers are obtained in a single
     step by the liquid-phase exfoliation of graphite fluoride with
     sulfolane. Comparative quantum-mechanical calculations reveal that
     graphene fluoride is the most thermodynamically stable of five studied
     hypothetical graphene derivatives; graphane, graphene fluoride, bromide,
     chloride, and iodide. The graphene fluoride is transformed into graphene
     via graphene iodide, a spontaneously decomposing intermediate. The
     calculated bandgaps of graphene halides vary from zero for graphene
     bromide to 3.1 eV for graphene fluoride. It is possible to design the
     electronic properties of such two-dimensional crystals.,
  DOI = 10.1002/smll.201001401,
  ISSN = 1613-6810,
  Unique-ID = ISI:000285793900015,
  

• O. Schneeweiss, B. David, T. Zak, J. Filip, J. Tucek, R. Zboril, and M. Maslan, "Magnetic Interactions between Nanoparticles Formed during Calcination of
  Ferrihydrite," ACTA PHYSICA POLONICA A, vol. 118, iss. 5, pp. 749-750, 2010.
  [Bibtex]

  @article ISI:000285797100015,
  Author = Schneeweiss, O. and David, B. and Zak, T. and Filip, J. and Tucek, J.
     and Zboril, R. and Maslan, M.,
  Title = Magnetic Interactions between Nanoparticles Formed during Calcination of
     Ferrihydrite,
  Journal = ACTA PHYSICA POLONICA A,
  Year = 2010,
  Volume = 118,
  Number = 5,
  Pages = 749-750,
  Month = NOV,
  Note = 14th Czech and Slovak Conference on Magnetism, Kosice, SLOVAKIA, JUN
     06-09, 2010,
  Organization = Safarik Univ, Fac Sci; Inst Phys, Slovak Acad Sci; Slovak Phys Soc,
  Abstract = Magnetic interactions between nanoparticles of magnetite Fe(3)O(4) and
     alpha-Fe Formed during calcination of ferrihydrite in H(2) at
     temperatures 533 - 713 K were studied The detailed phase analysis
     describes evolution of contents of magnetite and alpha-Fe Explanation of
     an anomalous course of magnetic moment characterized by a local maximum
     at an early stage of formation of nanoparticles is discussed,
  ISSN = 0587-4246,
  Unique-ID = ISI:000285797100015,
  

• J. Soukupova, L. Kvitek, M. Kratochvilova, A. Panacek, R. Prucek, and R. Zboril, "Silver Voyage from Macro- to Nanoworld," JOURNAL OF CHEMICAL EDUCATION, vol. 87, iss. 10, pp. 1094-1097, 2010.
  [Bibtex]

  @article ISI:000281834400024,
  Author = Soukupova, Jana and Kvitek, Libor and Kratochvilova, Martina and
     Panacek, Ales and Prucek, Robert and Zboril, Radek,
  Title = Silver Voyage from Macro- to Nanoworld,
  Journal = JOURNAL OF CHEMICAL EDUCATION,
  Year = 2010,
  Volume = 87,
  Number = 10,
  Pages = 1094-1097,
  Month = OCT,
  DOI = 10.1021/ed1003405,
  ISSN = 0021-9584,
  Unique-ID = ISI:000281834400024,
  

• J. Pinkas, V. Reichlova, A. Serafimidisova, Z. Moravec, R. Zboril, D. Jancik, and P. Bezdicka, "Sonochemical Synthesis of Amorphous Yttrium Iron Oxides Embedded in
  Acetate Matrix and their Controlled Thermal Crystallization toward
  Garnet (Y(3)Fe(5)O(12)) and Perovskite (YFeO(3)) Nanostructures," JOURNAL OF PHYSICAL CHEMISTRY C, vol. 114, iss. 32, pp. 13557-13564, 2010.
  [Bibtex]

  @article ISI:000280727500022,
  Author = Pinkas, Jiri and Reichlova, Vendula and Serafimidisova, Aneta and
     Moravec, Zdenek and Zboril, Radek and Jancik, Dalibor and Bezdicka, Petr,
  Title = Sonochemical Synthesis of Amorphous Yttrium Iron Oxides Embedded in
     Acetate Matrix and their Controlled Thermal Crystallization toward
     Garnet (Y(3)Fe(5)O(12)) and Perovskite (YFeO(3)) Nanostructures,
  Journal = JOURNAL OF PHYSICAL CHEMISTRY C,
  Year = 2010,
  Volume = 114,
  Number = 32,
  Pages = 13557-13564,
  Month = AUG 19,
  Abstract = Sonolysis of stoichiometric mixtures of tris(2,4-pentanedionato)iron,
     Fe(acac)(3), and tris(2,4-pentanedionato)yttrium, Y(acac)(3)(H(2)O)(3),
     under Ar atmosphere in tetraglyme led to a colloidal solution from which
     amorphous Y-Fe-O nanopowders could be precipitated by hexane. These
     powders are composed of amorphous nanoparticles (3 nm) of yttrium
     iron(III) oxide embedded in an acetate matrix as proved by X-ray
     diffraction (XRD), transmission electron microscopy (TEM), scanning
     electron microscopy (SEM), mass spectrometry, and Mossbauer and IR
     spectroscopy. The increasing amount (0, 2, 6\%) of added water in the
     reaction mixture was found to lower the organics content in the
     sonochemical products. The thermally induced crystallization of the
     amorphous Y-Fe-O nanoparticles was studied by thermal analysis (TG/DSC),
     evolved gas analysis (EGA), high-temperature XRD, and Mossbauer
     spectroscopy. Depending on the Y/Fe starting stoichiometric ratio in the
     sonicated reaction mixture, the single-phase YFeO(3) (YIP) with the
     perovskite structure or Y(3)Fe(5)O(12) (YIG) with the garnet structure
     can be synthesized by such controlled thermal transformation. The
     single-phase character of crystallized samples and the well-defined
     structure of both YIP and YIG nanoparticles were confirmed by XRD and
     Mossbauer spectra excluding the presence of any other phases in the
     reaction products. The hyperfine parameters of magnetically ordered
     spectrum of YIP reflect the octahedral environment of high-spin Fe(III)
     in the perovskite structure, while two nonequivalent octahedral and
     tetrahedral Fe(III) positions were identified in the YIG garnet
     spectrum.,
  DOI = 10.1021/jp104091n,
  ISSN = 1932-7447,
  Unique-ID = ISI:000280727500022,
  

• L. Smolakova, T. Grygar, L. Capek, O. Schneeweiss, and R. Zboril, "Speciation of Fe in Fe-modified zeolite catalysts," JOURNAL OF ELECTROANALYTICAL CHEMISTRY, vol. 647, iss. 1, pp. 8-19, 2010.
  [Bibtex]

  @article ISI:000280863200002,
  Author = Smolakova, Lucie and Grygar, Tomas and Capek, Libor and Schneeweiss,
     Oldrich and Zboril, Radek,
  Title = Speciation of Fe in Fe-modified zeolite catalysts,
  Journal = JOURNAL OF ELECTROANALYTICAL CHEMISTRY,
  Year = 2010,
  Volume = 647,
  Number = 1,
  Pages = 8-19,
  Month = AUG 15,
  Abstract = Fe-modified zeolites (ferrierite and MFI) were prepared by four
     impregnation methods followed by calcination and tested as catalysts in
     oxidative dehydrogenation of ethane by nitrous oxide at 350 degrees C.
     The Fe cationic and Fe oxidic species were identified by combination of
     UV-Vis spectroscopy and voltammetry. Monomeric or dimeric Fe ions have
     only UV absorption bands and some of them evolve voltammetrically
     identifiable [Fe(OH)(x)]((3-x)+) ions in contact with acetic
     acid-sodium acetate buffer. Fe oxide nanoclusters characterised by UV
     band at about 28,000 cm(-1) are not detected by voltammetry under chosen
     conditions because they are situated inside the zeolite channels.
     Amorphous, nanocrystalline, and crystalline Fe(III) oxides were
     distinguished sensitively by their specific voltammetric reduction peaks
     at potentials -0.1 to -0.8 V/SCE in acetate buffer (pH 4.7) and by
     phase-specific electron pair transitions responsible for Vis absorption
     band centred at 17,500-21,000 cm(-1). The proposed method to
     differentiation between these ferric oxides is novel in materials
     analysis and solid state speciation. The monomeric and dimeric ferric
     ions are active in oxidative dehydrogenation of ethane to ethene with
     selectivity about 40-60\% under used conditions, while Fe oxide
     nanoclusters are too active and over-oxidise ethane and/or ethene to C,
     CO and CO(2). Oppositely to general expectations, ferric oxides are
     indifferent in the catalytic reaction and do not decrease reaction
     selectivity. (C) 2010 Elsevier B.V. All rights reserved.,
  DOI = 10.1016/j.jelechem.2010.05.017,
  ISSN = 1572-6657,
  Unique-ID = ISI:000280863200002,
  

• T. Kohout, A. Kosterov, J. Haloda, P. Tycova, and R. Zboril, "Low-temperature magnetic properties of iron-bearing sulfides and their
  contribution to magnetism of cometary bodies," ICARUS, vol. 208, iss. 2, pp. 955-962, 2010.
  [Bibtex]

  @article ISI:000280183000037,
  Author = Kohout, Tomas and Kosterov, Andrei and Haloda, Jakub and Tycova,
     Patricie and Zboril, Radek,
  Title = Low-temperature magnetic properties of iron-bearing sulfides and their
     contribution to magnetism of cometary bodies,
  Journal = ICARUS,
  Year = 2010,
  Volume = 208,
  Number = 2,
  Pages = 955-962,
  Month = AUG,
  Abstract = In this study we present a review of low-temperature magnetic properties
     of alabandite (Fe, Mn)S, daubreelite FeCr(2)S(4), pyrrhotite Fe(1-x),S
     and troilite FeS updated with new experimental data. The results
     indicate that besides FeNi alloys mainly daubreelite with its Curie
     temperature T(C)similar to 150 K and strong induced and remanent
     magnetizations may be a significant magnetic mineral in cold
     environments and may complement that of FeNi or even dominate magnetic
     properties of sulfide rich bodies at temperatures below T(C).
     Comets are known to contain iron-bearing sulfides within dusty fraction
     and their surfaces are subject to temperature variations in the range of
     100-200 K down to the depth of several meters while the cometary
     interior is thermally stable at several tens of Kelvin which is within
     the temperature range where alabandite, daubreelite or troilite are
     ``magnetic''. Thus not only FeNi alloys, but also sulfides have to be
     considered in the interpretation of magnetic data from cometary objects
     such as will be delivered by Rosetta mission. Modeling indicates that
     magnetic interactions between cometary nucleus containing iron-bearing
     sulfides and interplanetary magnetic field would be difficult, but not
     impossible, to detect from orbit. Rosetta's Philae lander present on the
     surface would provide more reliable signal.. (C) 2010 Elsevier Inc. All
     rights reserved.,
  DOI = 10.1016/j.icarus.2010.03.021,
  ISSN = 0019-1035,
  Unique-ID = ISI:000280183000037,
  

• P. Dallas, J. Tucek, D. Jancik, M. Kolar, A. Panacek, and R. Zboril, "Magnetically Controllable Silver Nanocomposite with Multifunctional
  Phosphotriazine Matrix and High Antimicrobial Activity," ADVANCED FUNCTIONAL MATERIALS, vol. 20, iss. 14, pp. 2347-2354, 2010.
  [Bibtex]

  @article ISI:000280427000019,
  Author = Dallas, Panagiotis and Tucek, Jiri and Jancik, Dalibor and Kolar, Milan
     and Panacek, Ales and Zboril, Radek,
  Title = Magnetically Controllable Silver Nanocomposite with Multifunctional
     Phosphotriazine Matrix and High Antimicrobial Activity,
  Journal = ADVANCED FUNCTIONAL MATERIALS,
  Year = 2010,
  Volume = 20,
  Number = 14,
  Pages = 2347-2354,
  Month = JUL 23,
  Abstract = A recently developed multi-functional phosphotriazine-based polymer is
     used as a matrix for embedding gamma-Fe(2)O(3) nanoparticles as well as
     a suitable chemical template for surface modification with silver
     nanoparticles. For the; primary magnetic modification, maghemite
     nanoparticles are surface modified with oleic acid in order to render
     them organophilic and to prevent the aggregation of the nanoparticles.
     This aggregation could occur as the polymer synthesis, based on reaction
     of phosphonitrilic chlorine and 1,4phenylenediamine, takes place in
     toluene. The surface active amine units of the polymer structure enable
     the reduction of silver cations to silver nanoparticles, which are well
     attached and finely dispersed on its surface. The developed
     nanocomposite represents one of the few magnetically controllable
     antibacterial agents based on silver nanoparticles. Magnetic
     measurements reveal the completely suppressed interactions among
     maghemite nanoparticles because of their perfect surface coating with an
     organic surfactant and fine dispersion inside the polymer matrix. This
     magnetic nanocomposite exhibits a high antibacterial and antifungal
     activity as proven by tests with nine bacterial strains and four candida
     (yeast genus) species. For the majority of the tested species, the
     minimum-inhibition concentrations are below 100 mg L(-1), which is
     comparable to their equivalent minimum-inhibition concentrations in
     colloidal silver systems.,
  DOI = 10.1002/adfm.200902370,
  ISSN = 1616-301X,
  Unique-ID = ISI:000280427000019,
  

• K. Sivula, R. Zboril, F. Le Formal, R. Robert, A. Weidenkaff, J. Tucek, J. Frydrych, and M. Graetzel, "Photoelectrochemical Water Splitting with Mesoporous Hematite Prepared
  by a Solution-Based Colloidal Approach," JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 132, iss. 21, pp. 7436-7444, 2010.
  [Bibtex]

  @article ISI:000278190600045,
  Author = Sivula, Kevin and Zboril, Radek and Le Formal, Florian and Robert, Rosa
     and Weidenkaff, Anke and Tucek, Jiri and Frydrych, Jiri and Graetzel,
     Michael,
  Title = Photoelectrochemical Water Splitting with Mesoporous Hematite Prepared
     by a Solution-Based Colloidal Approach,
  Journal = JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,
  Year = 2010,
  Volume = 132,
  Number = 21,
  Pages = 7436-7444,
  Month = JUN 2,
  Abstract = Sustainable hydrogen production through photoelectrochemical water
     splitting using hematite (alpha-Fe(2)O(3)) is a promising approach for
     the chemical storage of solar energy, but is complicated by the
     material's nonoptimal optoelectronic properties. Nanostructuring
     approaches have been shown to increase the performance of hematite, but
     the ideal nanostructure giving high efficiencies for all absorbed light
     wavelengths remains elusive. Here, we report for the first time
     mesoporous hematite photoelectodes prepared by a solution-based
     colloidal method which yield water-splitting photocurrents of 0.56 mA
     cm(-2) under standard conditions (AM 1.5G 100 mW cm(-2), 1.23 V vs
     reversible hydrogen electrode, RHE) and over 1.0 mA cm(-2) before the
     dark current onset (1.55 V vs RHE). The sintering temperature is found
     to increase the average particle size, and have a drastic effect on the
     photoactivity. X-ray photoelectron spectroscopy and magnetic
     measurements using a SQUID magnetometer link this effect to the
     diffusion and incorporation of dopant atoms from the transparent
     conducting substrate. In addition, examining the optical properties of
     the films reveals a considerable change in the absorption coefficient
     and onset properties, critical aspects for hematite as a solar energy
     converter, as a function of the sintering temperature. A detailed
     investigation into hematite's crystal structure using powder X-ray
     diffraction with Rietveld refinement to account for these effects
     correlates an increase in a C(3v)-type crystal lattice distortion to the
     improved optical properties.,
  DOI = 10.1021/ja101564f,
  ISSN = 0002-7863,
  Unique-ID = ISI:000278190600045,
  

• C. Gregor, M. Hermanek, D. Jancik, J. Pechousek, J. Filip, J. Hrbac, and R. Zboril, "The Effect of Surface Area and Crystal Structure on the Catalytic
  Efficiency of Iron(III) Oxide Nanoparticles in Hydrogen Peroxide
  Decomposition," EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, iss. 16, pp. 2343-2351, 2010.
  [Bibtex]

  @article ISI:000278888300003,
  Author = Gregor, Cenek and Hermanek, Martin and Jancik, Dalibor and Pechousek,
     Jiri and Filip, Jan and Hrbac, Jan and Zboril, Radek,
  Title = The Effect of Surface Area and Crystal Structure on the Catalytic
     Efficiency of Iron(III) Oxide Nanoparticles in Hydrogen Peroxide
     Decomposition,
  Journal = EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,
  Year = 2010,
  Number = 16,
  Pages = 2343-2351,
  Month = JUN,
  Abstract = Iron(II) oxalate dihydrate has been used as a readily decomposable
     substance for the controlled synthesis of nanosized iron(III) oxides.
     The polymorphous composition, particle size and surface area of these
     iron oxide nanoparticles were controlled by varying the reaction
     temperature between 185 and 500 degrees C. As-prepared samples were
     characterized by XRD, low-temperature and in-field Mossbauer
     spectroscopy, BET surface area and the TEM technique. They were also
     tested as heterogeneous catalysts in hydrogen peroxide decomposition. At
     the selected temperatures, the formed nanomaterials did not contain any
     traces of amorphous phase, which is known to considerably reduce the
     catalytic efficiency of iron(III) oxide catalysts. As the thickness of
     the sample (approximate to 2 mm) was above the critical value, a
     temporary temperature increase (''exo effect'') was observed during
     all quasi-isothermal decompositions studied, irrespective of the
     reaction temperature. Increasing the reaction temperature resulted in a
     shift of the exo effect towards shorter times and an increased content
     of maghemite phase. The maghemite content decreases above 350 degrees C
     as a result of a thermally induced polymorphous transition into
     hematite. The catalytic data demonstrate that the crystal structure of
     iron(III) oxide (i.e. the relative contents of maghemite and hematite)
     does not influence the rate of hydrogen peroxide decomposition. However,
     the rate constant increases monotonously with increasing sample surface
     area (and decreasing thermolysis temperature), reaching a maximum of 27
     x 10(-3) min(-1)(g/L)(-1) for the sample with a surface area of 285
     m(2)g(-1). This rate constant is currently the highest reported value of
     all known iron oxide catalytic systems and is even slightly higher than
     that observed for the most efficient catalyst reported to date, which
     has a significantly larger surface area of 337 m(2)g(-1). This
     surprisingly high catalytic activity at relatively low surface area can
     be ascribed to the absence of a amorphous phase in the samples prepared
     in this study. Taking into account these new findings, the contributions
     of the key factors highlighted above (surface area, particle size,
     crystal structure, crystallinity) to the overall activity of iron oxides
     for hydrogen peroxide decomposition are discussed.,
  DOI = 10.1002/ejic.200901066,
  ISSN = 1434-1948,
  Unique-ID = ISI:000278888300003,
  

• Z. Travnicek, R. Herchel, J. Mikulik, and R. Zboril, "Copper(II) cyanido-bridged bimetallic nitroprusside-based complexes:
  Syntheses, X-ray structures, magnetic properties, (57)Fe Mossbauer
  spectroscopy and thermal studies," JOURNAL OF SOLID STATE CHEMISTRY, vol. 183, iss. 5, pp. 1046-1054, 2010.
  [Bibtex]

  @article ISI:000277675500009,
  Author = Travnicek, Zdenek and Herchel, Radovan and Mikulik, Jiri and Zboril,
     Radek,
  Title = Copper(II) cyanido-bridged bimetallic nitroprusside-based complexes:
     Syntheses, X-ray structures, magnetic properties, (57)Fe Mossbauer
     spectroscopy and thermal studies,
  Journal = JOURNAL OF SOLID STATE CHEMISTRY,
  Year = 2010,
  Volume = 183,
  Number = 5,
  Pages = 1046-1054,
  Month = MAY,
  Abstract = Three heterobimetallic cyanido-bridged copper(II) nitroprusside-based
     complexes of the compositions [Cu(tet)Fe(CN)(5)O]center dot H(2)O (1),
     where tet=N,N'-bis(3-aminopropyl)ethylenediamine,
     [Cu(hto)Fe(CN)(5)NO]center dot 2H(2)O (2), where
     hto=1,3,6,9,11,14-hexaazatricyclo[12.2.1.1(69)]octadecane and
     [Cu(hto)(2)Fe(CN)(5)NO]center dot H(2)O (3), where
     nme=N-methylethylenediamine, were synthesized and characterized by
     elemental analyses, (57)Fe Mossbauer and FTI spectroscopies, thermal
     analysis, magnetic measurements and single-crystal X-ray analysis. The
     products of thermal degradation processes of 2 and 3 were studied by
     XRD, (57)Fe Mossbauer spectroscopy, SEM and EDS, and they were
     identified as mixtures of CuFe(2)O(4) and CuO. (C) 2010 Elsevier Inc.
     All rights reserved.,
  DOI = 10.1016/j.jssc.2010.03.001,
  ISSN = 0022-4596,
  Unique-ID = ISI:000277675500009,
  

• Z. Travnicek, I. Popa, M. Cajan, R. Zboril, V. Krystof, and J. Mikulik, "The first iron(III) complexes with cyclin-dependent kinase inhibitors:
  Magnetic, spectroscopic (IR, ES+ MS, NMR, (57)Fe Mossbauer),
  theoretical, and biological activity studies," JOURNAL OF INORGANIC BIOCHEMISTRY, vol. 104, iss. 4, pp. 405-417, 2010.
  [Bibtex]

  @article ISI:000274921200007,
  Author = Travnicek, Zdenek and Popa, Igor and Cajan, Michal and Zboril, Radek and
     Krystof, Vladimir and Mikulik, Jiri,
  Title = The first iron(III) complexes with cyclin-dependent kinase inhibitors:
     Magnetic, spectroscopic (IR, ES+ MS, NMR, (57)Fe Mossbauer),
     theoretical, and biological activity studies,
  Journal = JOURNAL OF INORGANIC BIOCHEMISTRY,
  Year = 2010,
  Volume = 104,
  Number = 4,
  Pages = 405-417,
  Month = APR,
  Abstract = The first Fe(III) complexes 1-6 with cyclin-dependent kinase (CDK)
     inhibitors of the type [Fe(L(n))Cl(3)]center dot nH(2)O (n = 0 for 1,
     1 for 2, 2 for 3-6; L(1)-L(6) = C2- and phenyl-substituted CDK
     inhibitors derived from 6-benzyl-amino-9-isopropylpurine), have been
     synthesized and characterized by elemental analysis, IR, (57)Fe
     Mossbauer, (1)H and (13)C NMR, and ES+ mass spectroscopies, conductivity
     and magnetic susceptibility measurements, and thermogravimetric analysis
     (TGA) and differential scanning calorimetry (DSC). The study revealed
     that the compounds are mononuclear, tetrahedral high-spin (S = 5/2)
     Fe(III) complexes with an admixture of an S = 3/2 spin state originating
     probably from five-coordinated Fe(III) ions either connecting with a
     bidentate coordination mode of the CDK inhibitor ligand or relating to
     the possibility that one crystal water molecule enters the coordination
     sphere of the central atom in a portion of molecules of the appropriate
     complex. Nearly spin-only value of the effective magnetic moment (5.82
     mu(eff)/mu(B)) was determined for compound 1 due to absence of crystal
     water molecule(s) in the structure of the complex. Based on NMR data and
     DFT calculations, we assume that the appropriate organic ligand is
     coordinated to the Fe(III) ion through the N7 atom of a purine moiety.
     The cytotoxicity of the complexes was tested in vitro against selected
     human cancer cell lines (G-361, HOS, K-562 and MCF-7) along with the
     ability to inhibit the CDK2/cyclinE kinase. The best cytotoxicity
     (IC(50): 4-23 mu M) and inhibition activity (IC(50): 0.02-0.09 mu M)
     results have been achieved in the case of complexes 2-4, and complexes
     3,4 and 6, respectively. In addition, the X-ray structure of
     2-chloro-6-benzylamino-9-isopropylpurine, i.e. a precursor for the
     preparation of L(1), L(4) and L(5), is also described. (C) 2009 Elsevier
     Inc. All rights reserved.,
  DOI = 10.1016/j.jinorgbio.2009.12.002,
  ISSN = 0162-0134,
  Unique-ID = ISI:000274921200007,
  

• P. Hermankova, M. Hermanek, and R. Zboril, "Thermal Decomposition of Ferric Oxalate Tetrahydrate in Oxidative and
  Inert Atmospheres: The Role of Ferrous Oxalate as an Intermediate," EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, iss. 7, pp. 1110-1118, 2010.
  [Bibtex]

  @article ISI:000275695200014,
  Author = Hermankova, Pavla and Hermanek, Martin and Zboril, Radek,
  Title = Thermal Decomposition of Ferric Oxalate Tetrahydrate in Oxidative and
     Inert Atmospheres: The Role of Ferrous Oxalate as an Intermediate,
  Journal = EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,
  Year = 2010,
  Number = 7,
  Pages = 1110-1118,
  Month = MAR,
  Abstract = The thermal decomposition of ferric oxalate tetrahydrate
     Fe(2)(C(2)O(4))(3)center dot 4H(2)O was studied in dynamic oxidative and
     inert atmospheres by using a simultaneous thermogravimetric (TG) and
     differential scanning calorimetric (DSC) analytical device equipped with
     an evolved gas analyzer (EGA). Solid-state decomposition products formed
     during the decomposition were analyzed by (57)Fe Mossbauer spectroscopy,
     in situ and ex situ X-ray powder diffraction, and magnetic measurements.
     In the dynamic inert atmosphere, we observed the formation of a tiny
     amount of superparamagnetic iron oxide (most likely Fe(3)O(4)) together
     with a majority of ferrous oxalate (FeC(2)O(4)) and remains of
     undecomposed Fe(2)(C(2)O(4))(3) after the first decomposition step,
     which finished at 210 degrees C. The astonishing presence of the oxidic
     phase at such low temperatures is a highly probable side effect of the
     main reduction action of the electrons on the Fe(III) cations in the
     ferric oxalate structure, thus resulting in the creation of intermediate
     FeC(2)O(4). The final product of decomposition of the FeC(2)O(4)
     intermediate in a dynamic inert atmosphere is a mixture of wustite
     (Fe(x)O), alpha-iron (alpha-Fe), and magnetite (Fe(3)O(4)). Their
     proportion accurately reflects actual
     disproportionation/synproportionation/redisproportionation processes
     likely encouraged by the preserved size and morphology of the initial
     ferric oxalate crystals and that are dependent on temperature. In the
     oxidative atmosphere, the decomposition proceeds in the three overlapped
     stages that include dehydration, the astonishing reductive formation of
     FeC(2)O(4) as an intermediate, and final decarboxylation to hematite
     (alpha-Fe(2)O(3)). The principal effect of the experimental conditions
     on the amount of intermediate formation of FeC(2)O(4) in the oxidative
     atmosphere is also discussed and evaluated from the isothermal
     experiments carried out at 180 degrees C.,
  DOI = 10.1002/ejic.200900835,
  ISSN = 1434-1948,
  Unique-ID = ISI:000275695200014,
  

• P. Dallas, R. Zboril, A. B. Bourlinos, D. Jancik, D. Niarchos, A. Panacek, and D. Petridis, "Cornet-Like Phosphotriazine/Diamine Polymers as Reductant and Matrix for
  the Synthesis of Silver Nanocomposites with Antimicrobial Activity," MACROMOLECULAR MATERIALS AND ENGINEERING, vol. 295, iss. 2, pp. 108-114, 2010.
  [Bibtex]

  @article ISI:000275287400003,
  Author = Dallas, Panagiotis and Zboril, Radek and Bourlinos, Athanasios B. and
     Jancik, Dalibor and Niarchos, Dimitrios and Panacek, Ales and Petridis,
     Dimitrios,
  Title = Cornet-Like Phosphotriazine/Diamine Polymers as Reductant and Matrix for
     the Synthesis of Silver Nanocomposites with Antimicrobial Activity,
  Journal = MACROMOLECULAR MATERIALS AND ENGINEERING,
  Year = 2010,
  Volume = 295,
  Number = 2,
  Pages = 108-114,
  Month = FEB 12,
  Abstract = The synthesis of silver nanoparticles attached on the surface of a
     hollow cornet-like polymer matrix which served as a reductant and host
     matrix is described. This hybrid organic/inorganic macromolecular matrix
     is exhibiting anion-exchange properties, porous structure and hollow
     morphologies, and absorptions in the visible light region. Due to the
     anion-exchange property and the 3D orientation of the macromolecular
     chains the material is defining a new functional organic/inorganic
     hybrid. For the synthesis of nanoparticles, no other reducing agents
     were used and silver nanoparticles with a mean diameter of less than 20
     nm were attached on the surface of the polymer, thus inheriting the
     composite with high antibacterial activity tested in bacterial strains
     and yeasts.,
  DOI = 10.1002/mame.200900258,
  ISSN = 1438-7492,
  Unique-ID = ISI:000275287400003,
  

• A. Bakandritsos, R. Zboril, N. Bouropoulos, P. Kallinteri, M. E. Favretto, T. L. Parker, A. Mullertz, and D. G. Fatouros, "The preparation of magnetically guided lipid based nanoemulsions using
  self-emulsifying technology," NANOTECHNOLOGY, vol. 21, iss. 5, 2010.
  [Bibtex]

  @article ISI:000273348400004,
  Author = Bakandritsos, Aristides and Zboril, Radek and Bouropoulos, Nikolaos and
     Kallinteri, Paraskevi and Favretto, Marco E. and Parker, Terry L. and
     Mullertz, Anette and Fatouros, Dimitrios G.,
  Title = The preparation of magnetically guided lipid based nanoemulsions using
     self-emulsifying technology,
  Journal = NANOTECHNOLOGY,
  Year = 2010,
  Volume = 21,
  Number = 5,
  Month = FEB 5,
  Abstract = This paper reports an easy and highly reproducible preparation route,
     using self-emulsifying technology, for an orally administered high
     quality magnetically responsive drug delivery system. Hydrophobic iron
     oxide nanoparticles of about 5 nm in diameter were prepared and
     incorporated into the lipid core of the produced oil droplets of a
     self-nanoemulsifying drug delivery system (MagC(18)/SNEDDS). The
     produced nanoemulsion exhibits colloidal stability at high ionic
     strengths and temperatures. The observed value of the saturation
     magnetization at 2 K is approximate to 4.1 emu g(-1). The nanoemulsion
     displayed the magnetic properties of a non-interacting assembly of
     superparamagnetic particles and a low blocking temperature. Moreover the
     effect of MagC(18)/SNEDDS on biological systems in vitro was
     investigated in rodent fibroblasts (3T3 cells). The cytotoxicity studies
     show that none of the formulations tested affected cell activity
     significantly over the 24 h incubation. Such systems might have a
     potential use for oral delivery of poorly soluble compounds by extending
     the residence time of the formulation in the small intestine resulting
     in increased drug absorption values.,
  DOI = 10.1088/0957-4484/21/5/055104,
  Article-Number = 055104,
  ISSN = 0957-4484,
  Unique-ID = ISI:000273348400004,
  

• V. Georgakilas, A. B. Bourlinos, R. Zboril, T. A. Steriotis, P. Dallas, A. K. Stubos, and C. Trapalis, "Organic functionalisation of graphenes," CHEMICAL COMMUNICATIONS, vol. 46, iss. 10, pp. 1766-1768, 2010.
  [Bibtex]

  @article ISI:000274827000053,
  Author = Georgakilas, Vasilios and Bourlinos, Athanasios B. and Zboril, Radek and
     Steriotis, Theodore A. and Dallas, Panagiotis and Stubos, Athanasios K.
     and Trapalis, Christos,
  Title = Organic functionalisation of graphenes,
  Journal = CHEMICAL COMMUNICATIONS,
  Year = 2010,
  Volume = 46,
  Number = 10,
  Pages = 1766-1768,
  Abstract = Graphene sheets derived from dispersion of graphite in pyridine were
     functionalised by the 1,3 dipolar cycloaddition of azomethine ylide. The
     organically modified graphene sheets are easily dispersible in polar
     organic solvents and water, and they are extensively characterised using
     several spectroscopic and microscopy techniques.,
  DOI = 10.1039/b922081j,
  ISSN = 1359-7345,
  Unique-ID = ISI:000274827000053,
  

• V. Tzitzios, G. Basina, A. Bakandritsos, C. G. Hadjipanayis, H. Mao, D. Niarchos, G. C. Hadjipanayis, J. Tucek, and R. Zboril, "Immobilization of magnetic iron oxide nanoparticles on laponite discs -
  an easy way to biocompatible ferrofluids and ferrogels," JOURNAL OF MATERIALS CHEMISTRY, vol. 20, iss. 26, pp. 5418-5428, 2010.
  [Bibtex]

  @article ISI:000279046200007,
  Author = Tzitzios, Vassilios and Basina, Georgia and Bakandritsos, Aristides and
     Hadjipanayis, Costas G. and Mao, Hui and Niarchos, Dimitrios and
     Hadjipanayis, George C. and Tucek, Jiri and Zboril, Radek,
  Title = Immobilization of magnetic iron oxide nanoparticles on laponite discs -
     an easy way to biocompatible ferrofluids and ferrogels,
  Journal = JOURNAL OF MATERIALS CHEMISTRY,
  Year = 2010,
  Volume = 20,
  Number = 26,
  Pages = 5418-5428,
  Abstract = Magnetic nanocomposites containing iron oxide (maghemite -
     gamma-Fe(2)O(3)) nanoparticles, embedded in a synthetic clay matrix
     (laponite) were prepared by a new one step chemical route and
     characterized by TEM, XRD, magnetization measurements, Mossbauer
     spectroscopy, DLS, and MRI measurements. The synthesis procedure leads
     to non-stoichiometric gamma-Fe(2)O(3) with a controllable content in the
     nanocomposite. Magnetic nanoparticles incorporated in the diamagnetic
     clay matrix exhibit a mean diameter of 13 nm and superparamagnetic
     behaviour with a high saturation magnetization achievable at low applied
     magnetic fields. The in-field Mossbauer spectra and ZFC/FC magnetization
     curves reveal a perfect ferrimagnetic ordering within nanoparticles with
     negligible spin frustration and interparticle interactions due to the
     incorporation of maghemite nanoparticles into the nanocrystalline
     laponite matrix, thus, significantly avoiding their clustering and
     agglomeration. Magnetic iron oxide nanoparticles embedded in the
     laponite matrix exhibit strong T(2)-weighted MRI contrast. The
     gamma-Fe(2)O(3)/laponite nanocomposite particles have a 200 nm
     hydrodynamic diameter and form very stable hydrosols and/or hydrogels
     depending on their concentration in water.,
  DOI = 10.1039/c0jm00061b,
  ISSN = 0959-9428,
  Unique-ID = ISI:000279046200007,
  

• A. Bakandritsos, G. Mattheolabakis, R. Zboril, N. Bouropoulos, J. Tucek, D. G. Fatouros, and K. Avgoustakis, "Preparation, stability and cytocompatibility of magnetic/PLA-PEG hybrids," NANOSCALE, vol. 2, iss. 4, pp. 564-572, 2010.
  [Bibtex]

  @article ISI:000276469800015,
  Author = Bakandritsos, Aristides and Mattheolabakis, George and Zboril, Radek and
     Bouropoulos, Nikolaos and Tucek, Jiri and Fatouros, Dimitrios G. and
     Avgoustakis, Konstantinos,
  Title = Preparation, stability and cytocompatibility of magnetic/PLA-PEG hybrids,
  Journal = NANOSCALE,
  Year = 2010,
  Volume = 2,
  Number = 4,
  Pages = 564-572,
  Abstract = Hybrid nanocolloids based on biodegradable polymers of poly(lactide)
     (PLA) or poly(lactide)-block-poly(ethylene glycol) (PLA-PEG) and
     hydrophobic iron oxide magnetic nanoparticles (MNPs) of ca. 5 nm are
     prepared via a self-assembly route. The magnetic nanoparticles are
     organized in superclusters inside the hydrophobic core of PLA-PEG
     micelles or cholate-stabilized PLA nanospheres. The hydrodynamic
     diameter of MNPs-loaded PLA nanospheres is similar to 250 nm, whereas
     that of MNPs-loaded PLA-PEG micelles is much lower (similar to 100 nm)
     and thus compatible with applications where prolonged blood circulation
     is required. The PLA-PEG micelles exhibit high encapsulation efficiency
     for the MNPs, imparting a saturation magnetization value to the hybrid
     of 8.4 emu g(-1). Both hybrid colloids display magnetic properties of a
     non-interacting assembly of superparamagnetic particles and a low
     blocking temperature, both of which are key attributes for colloidally
     stable ferrofluids. Furthermore, the PLA-PEG magnetic hybrids display
     remarkable colloidal stability at high ionic strength, temperature and
     in human blood plasma, while the estimated critical micelle
     concentration of ca. 2 x 10(-5) mM (0.3 mg L(-1)) indicates the low
     probability of the colloids dissociation in the blood compartment. They
     were also found to be non-toxic to human cells in vitro. The results
     underline the potential of the magnetic/PLA-PEG hybrids and encourage
     further research for their in vivo biomedical applications.,
  DOI = 10.1039/b9nr00253g,
  ISSN = 2040-3364,
  Unique-ID = ISI:000276469800015,
  

• I. Markova, K. Kluchova, R. Zboril, M. Mashlan, and M. Herman, "SMALL BOWEL IMAGING - STILL A RADIOLOGIC APPROACH?," BIOMEDICAL PAPERS-OLOMOUC, vol. 154, iss. 2, pp. 123-132, 2010.
  [Bibtex]

  @article ISI:000279802800003,
  Author = Markova, Ingrid and Kluchova, Katerina and Zboril, Radek and Mashlan,
     Miroslav and Herman, Miroslav,
  Title = SMALL BOWEL IMAGING - STILL A RADIOLOGIC APPROACH?,
  Journal = BIOMEDICAL PAPERS-OLOMOUC,
  Year = 2010,
  Volume = 154,
  Number = 2,
  Pages = 123-132,
  Abstract = Background. In recent years, there has been renewed interest in small
     bowel imaging using a variety of radiologic or endoscopic techniques.
     This article gives an overview and comparison of old and new techniques
     used in small bowel imaging. New imaging methods as computed tomography
     (CT), CT enteroclysis (CTEc), CT enterography (CTEg), ultrasound (US),
     contrast-enhanced ultrasound (CEUS), US enteroclysis, US enterography,
     magnetic resonance imaging (MRI), MR enteroclysis (MREc) and MR
     enterography (MREg) are compared with the older techniques such as
     small-bowel follow-through (SBFT), conventional enteroclysis (CE) and
     endoscopic techniques including push enteroscopy,
     ezofagogastroduodenoscopy (EGD), sonde enteroscopy, ileocolonoscopy,
     double-balloon enteroscopy, intraoperative enteroscopy and wireless
     capsule enteroscopy (WCE).
     Methods. Systematic scan of Pubmed, Medline, Ovid, Elsevier search
     engines was used.. Additional information was found through the
     bibliographical review of relevant articles.
     Results. SBFT has only secondary role in small bowel imaging. US is
     still the method of choice in imaging for pediatric populations. US and
     CEUS are also accepted as a method of choice especially in inflammatory
     cases. CE has been replaced by new cross - sectional imaging techniques
     (CTEc/CTEg or MREc/MREg). CTEc combines the advantages of CT and CE.
     MREc combines the advantages of MRI and CE. Some authors prefer CTEg or
     MREg with peroral bowel preparation and they strictly avoid nasojejunal
     intubation under fluoroscopic control. MREc has better soft tissue
     contrast, showing it to be more sensitive in detecting mucosal lesions
     than CTEc in inflammatory diseases. CTEg/MREg are techniques preferred
     for patients in follow-up of the inflammatory diseases. The radiologic
     community is not unanimous however about their role in the imaging
     process. CTEc/MREc as well as CTEg/MREg are superior to endoscopic
     methods in the investigation of small-bowel tumors. WCE gives
     unparalleled imaging of the mucosal surface of the small bowel
     especially in the event of obscure gastrointestinal bleeding and
     inflammatory diseases.
     Conclusions. In a comparison of endoscopic and radiologic approaches,
     radiologic techniques are less invasive for patients, they take less
     time to investigate and allow imaging the entire small bowel. Some do
     not involve radiation exposure (US, MR). Endoscopic methods are more
     expensive, more invasive, need longer examination time and technical
     special skills but without radiation exposure. The greatest advantage of
     some endoscopic methods is the possibility of mucosal biopsy in one step
     with diagnostic examination (EGD, push enteroscopy, intraoperative
     enteroscopy, ileocolonoscopy).,
  ISSN = 1213-8118,
  Unique-ID = ISI:000279802800003,
  

• J. Cuda, R. Zboril, O. Schneeweiss, J. Tucek, V. Prochazka, M. Maslan, and P. Tucek, "Mossbauer Study and Macroscopic/Global Magnetic Behavior of Powdered
  Ilmenite (FeTiO(3)) Sample," in MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE - 2010, 2010, pp. 55-67.
  [Bibtex]

  @inproceedings ISI:000281606200008,
  Author = Cuda, J. and Zboril, R. and Schneeweiss, O. and Tucek, J. and Prochazka,
     V. and Maslan, M. and Tucek, P.,
  Editor = Tucek, J and Miglierini, M,
  Title = Mossbauer Study and Macroscopic/Global Magnetic Behavior of Powdered
     Ilmenite (FeTiO(3)) Sample,
  Booktitle = MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE - 2010,
  Series = AIP Conference Proceedings,
  Year = 2010,
  Volume = 1258,
  Pages = 55-67,
  Note = International Conference on Mossbauer Spectroscopy in Materials Science,
     Liptovsky Jan, SLOVAKIA, JAN 31-FEB 05, 2010,
  Abstract = In this article, the commercial synthetic powdered sample of ilmenite
     (FeTiO(3)) has been re-examined by Mossbauer spectroscopy in the
     paramagnetic regime from 77 K to 280 K and in a magnetically ordered
     state below 57 K. The effective vibrating mass and the Debye temperature
     was found to be (78 +/- 3) amu and (359 +/- 27) K, respectively. The two
     sextet components were used for correct fitting of the Mossbauer spectra
     recorded at 5 K and 45 K in an external magnetic field of 5 T. Moreover,
     the macroscopic magnetic measurements were carried out by an MPMS XL-7
     magnetometer to determine a temperature dependence of the molar
     susceptibility and hysteresis loops of this sample. The Mossbauer
     spectra and magnetization measurements confirm that below the ordering
     temperature of ilmenite, it behaves as a non-ideal antiferromagnetic
     material with a significant magnetic hardening at low temperatures. In
     addition, the magnetic molar susceptibility follows a Curie-Weiss law
     with C(m) = 5.8 x 10(-5) K m(3)/mol, and Weiss temperature theta(p) =
     30.6 K.,
  DOI = 10.1063/1.3473899,
  ISSN = 0094-243X,
  ISBN = 978-0-7354-0806-7,
  Unique-ID = ISI:000281606200008,
  

2009

• A. B. Bourlinos, V. Georgakilas, R. Zboril, T. A. Steriotis, A. K. Stubos, and C. Trapalis, "Aqueous-phase exfoliation of graphite in the presence of
  polyvinylpyrrolidone for the production of water-soluble graphenes," SOLID STATE COMMUNICATIONS, vol. 149, iss. 47-48, pp. 2172-2176, 2009.
  [Bibtex]

  @article ISI:000271843400013,
  Author = Bourlinos, Athanasios B. and Georgakilas, Vasilios and Zboril, Radek and
     Steriotis, Theodore A. and Stubos, Athanasios K. and Trapalis, Christos,
  Title = Aqueous-phase exfoliation of graphite in the presence of
     polyvinylpyrrolidone for the production of water-soluble graphenes,
  Journal = SOLID STATE COMMUNICATIONS,
  Year = 2009,
  Volume = 149,
  Number = 47-48,
  Pages = 2172-2176,
  Month = DEC,
  Abstract = Treatment of crystalline graphite fine powder with an aqueous solution
     of the harmless and versatile substance polyvinylpyrrolidone under
     sonication results in water-soluble, polymer-protected graphene single
     layers without oxidation or destruction of the sp(2) character of the
     carbon core. The liquid-phase extraction of graphene monolayers was
     evidenced by TEM and AFM techniques, while their graphitic character was
     checked with Raman spectroscopy. Besides PVP, the water-soluble
     biopolymers albumin and sodic carboxymethylcellulose were also employed
     successfully in the aqueous-phase exfoliation of graphite, thereby
     supporting the generic character of the present method using a variety
     of suitable polymeric extractants. (C) 2009 Elsevier Ltd. All rights
     reserved.,
  DOI = 10.1016/j.ssc.2009.09.018,
  ISSN = 0038-1098,
  Unique-ID = ISI:000271843400013,
  

• A. Panacek, M. Kolar, R. Vecerova, R. Prucek, J. Soukupova, V. Krystof, P. Hamal, R. Zboril, and L. Kvitek, "Antifungal activity of silver nanoparticles against Candida spp.," BIOMATERIALS, vol. 30, iss. 31, pp. 6333-6340, 2009.
  [Bibtex]

  @article ISI:000270767300020,
  Author = Panacek, Ales and Kolar, Milan and Vecerova, Renata and Prucek, Robert
     and Soukupova, Jana and Krystof, Vladimir and Hamal, Petr and Zboril,
     Radek and Kvitek, Libor,
  Title = Antifungal activity of silver nanoparticles against Candida spp.,
  Journal = BIOMATERIALS,
  Year = 2009,
  Volume = 30,
  Number = 31,
  Pages = 6333-6340,
  Month = NOV,
  Abstract = The antifungal activity of the silver nanoparticles (NPs) prepared by
     the modified Tollens process was evaluated for pathogenic Candida spp.
     by means of the determination of the minimum inhibitory concentration
     (MIC), minimum fungicidal concentration (MFC), and the time-dependency
     of yeasts growth inhibition. Simultaneously the cytotoxicity of the
     silver NPs to human fibroblasts was determined. The silver NPs exhibited
     inhibitory effect against the tested yeasts at the concentration as low
     as 0.21 mg/L of Ag. The inhibitory effect of silver NPs was enhanced
     through their stabilization and the lowest MIC equal to 0.05 mg/L was
     determined for silver NPs stabilized by sodium dodecyl sulfate against
     Candida albicans II. The obtained MICs of the silver NPs and especially
     of the stabilized silver NPs were comparable and in some cases even
     better than MICs of the conventional antifungal agents determined by
     E-test. The silver NPs effectively inhibited the growth of the tested
     yeasts at the concentrations below their cytotoxic limit against the
     tested human fibroblasts determined at a concentration equal to 30 mg/L
     of Ag. In contrast, ionic silver inhibited the growth of the tested
     yeasts at the concentrations comparable to the cytotoxic level (approx.
     1 mg/L) of ionic silver against the tested human fibroblasts. (C) 2009
     Elsevier Ltd. All rights reserved.,
  DOI = 10.1016/j.biomaterials.2009.07.065,
  ISSN = 0142-9612,
  Unique-ID = ISI:000270767300020,
  

• R. Prucek, M. Hermanek, and R. Zboril, "An effect of iron(III) oxides crystallinity on their catalytic
  efficiency and applicability in phenol degradation-A competition between
  homogeneous and heterogeneous catalysis," APPLIED CATALYSIS A-GENERAL, vol. 366, iss. 2, pp. 325-332, 2009.
  [Bibtex]

  @article ISI:000270644800014,
  Author = Prucek, Robert and Hermanek, Martin and Zboril, Radek,
  Title = An effect of iron(III) oxides crystallinity on their catalytic
     efficiency and applicability in phenol degradation-A competition between
     homogeneous and heterogeneous catalysis,
  Journal = APPLIED CATALYSIS A-GENERAL,
  Year = 2009,
  Volume = 366,
  Number = 2,
  Pages = 325-332,
  Month = SEP 25,
  Abstract = Catalytic efficiency, stability and environmental applicability of five
     iron(III) oxide nanopowders differing in surface area and crystallinity
     were tested in degradation of concentrated phenolic aqueous solutions
     (100 g/L) at mild temperature (30 degrees C), initially almost neutral
     pH and equimolar ratio of hydrogen peroxide and phenol. The catalyst
     properties were easily controlled by varying in reaction time during
     isothermal treatment of ferrous oxalate dihydrate in air at 175 degrees
     C. Although the catalytic efficiency clearly increases with the surface
     area of the nanopowders, it is not due to the solely heterogeneous
     catalytic mechanism as would be expected. The amorphous Fe(2)O(3)
     nanopowders possessing the largest surface areas (401 m(2) g(-1), 386
     m(2) g(-1)) are the most efficient catalysts evidently due to their
     highest susceptibility to leaching in acidic environment arising as a
     consequence of phenol degradation products. Thus, these amorphous
     samples act partially as homogeneous catalysts, which was confirmed by a
     high concentration of leached Fe(III) ions in the solution (similar to
     19 ppm). The crystalline hematite (alpha-Fe(2)O(3)) samples, varying in
     surface area between 337 m(2) g(-1) and 245 m(2) g(-1), are generally
     less efficient when compared to the amorphous powders, however their
     catalytic action is almost exclusively heterogeneous as only 3 ppm of
     leached Fe(III) was found in the reaction systems catalyzed by
     nanohematite samples. A significant difference in relative contributions
     of heterogeneous and homogenous catalysis was definitely established in
     buffered reaction systems catalyzed by amorphous Fe(2)O(3) and
     nanocrystalline hematite. The nanohematite sample exhibiting the highest
     heterogeneous action was tested at decreased initial phenol
     concentration (10 g/L), which is closer to the real contents of phenol
     in waste waters, and at different hydrogen peroxide/phenol molar ratios
     to consider its environmental applicability. At the hydrogen
     peroxide/phenol ratio equal to 5, no traces of the leached iron were
     detected and the phenol conversion of 84\% was reached. Moreover, such a
     high degree of conversion is accompanied by a decrease of the chemical
     oxygen demand (COD) from the initial value of 11.23 g/L to 4.22 g/L
     after 125 min. This fact indicates that the considerable fraction of
     primary reaction products was totally degraded. (C) 2009 Elsevier B.V.
     All rights reserved.,
  DOI = 10.1016/j.apcata.2009.07.019,
  ISSN = 0926-860X,
  Unique-ID = ISI:000270644800014,
  

• A. B. Bourlinos, V. Georgakilas, R. Zboril, T. A. Steriotis, and A. K. Stubos, "Liquid-Phase Exfoliation of Graphite Towards Solubilized Graphenes," SMALL, vol. 5, iss. 16, pp. 1841-1845, 2009.
  [Bibtex]

  @article ISI:000269227800006,
  Author = Bourlinos, Athanasios B. and Georgakilas, Vasilios and Zboril, Radek and
     Steriotis, Theodore A. and Stubos, Athanasios K.,
  Title = Liquid-Phase Exfoliation of Graphite Towards Solubilized Graphenes,
  Journal = SMALL,
  Year = 2009,
  Volume = 5,
  Number = 16,
  Pages = 1841-1845,
  Month = AUG 17,
  DOI = 10.1002/smll.200900242,
  ISSN = 1613-6810,
  Unique-ID = ISI:000269227800006,
  

• K. Kluchova, R. Zboril, J. Tucek, M. Pecova, L. Zajoncova, I. Safarik, M. Mashlan, I. Markova, D. Jancik, M. Sebela, H. Bartonkova, V. Bellesi, P. Novak, and D. Petridis, "Superparamagnetic maghemite nanoparticles from solid-state synthesis -
  Their functionalization towards peroral MRI contrast agent and magnetic
  carrier for trypsin immobilization," BIOMATERIALS, vol. 30, iss. 15, pp. 2855-2863, 2009.
  [Bibtex]

  @article ISI:000265328100001,
  Author = Kluchova, Katerina and Zboril, Radek and Tucek, Jiri and Pecova,
     Michaela and Zajoncova, Ludmila and Safarik, Ivo and Mashlan, Miroslav
     and Markova, Ingrid and Jancik, Dalibor and Sebela, Marek and
     Bartonkova, Helena and Bellesi, Vassiliki and Novak, Pavel and Petridis,
     Dimitris,
  Title = Superparamagnetic maghemite nanoparticles from solid-state synthesis -
     Their functionalization towards peroral MRI contrast agent and magnetic
     carrier for trypsin immobilization,
  Journal = BIOMATERIALS,
  Year = 2009,
  Volume = 30,
  Number = 15,
  Pages = 2855-2863,
  Month = MAY,
  Abstract = Nearly monodispersed superparamagnetic maghemite nanoparticles (15-20
     nm) were prepared by a one-step thermal decomposition of iron(II)
     acetate in air at 400 degrees C. The presented synthetic route is
     simple, cost effective and allows to prepare the high-quality
     superparamagnetic particles in a large scale. The as-prepared particles
     were exploited for the development of magnetic nanocomposites with the
     possible applicability in medicine and biochemistry. For the purposes of
     the MRI diagnostics, the maghemite particles were simply dispersed in
     the bentonite matrix. The resulting nanocomposite represents very
     effective and cheap oral negative contrast agent for MRI of the
     gastrointestinal tract and reveals excellent contrast properties, fully
     comparable with those obtained for commercial contrast material. The
     results of the clinical research of this maghemite-bentonite contrast
     agent for imaging of the small bowel are discussed. For biochemical
     applications, the primary functionalization of the prepared maghemite
     nanoparticles with chitosan was performed. In this way, a highly
     efficient magnetic carrier for protein immobilization was obtained as
     demonstrated by conjugating thermostable raffinose-modified trypsin
     (RMT) using glutaraldehyde. The covalent conjugation resulted in a
     further increase in trypsin thermostability (T(50) = 61 degrees C) and
     elimination of its autolysis. Consequently, the immobilization of RMT
     allowed fast in-solution digestion of proteins and their identification
     by MALDI-TOF mass spectrometry. (C) 2009 Elsevier Ltd. All rights
     reserved.,
  DOI = 10.1016/j.biomaterials.2009.02.023,
  ISSN = 0142-9612,
  Unique-ID = ISI:000265328100001,
  

• V. Belessi, D. Lambropoulou, I. Konstantinou, R. Zboril, J. Tucek, D. Jancik, T. Albanis, and D. Petridis, "Structure and photocatalytic performance of magnetically separable
  titania photocatalysts for the degradation of propachlor," APPLIED CATALYSIS B-ENVIRONMENTAL, vol. 87, iss. 3-4, pp. 181-189, 2009.
  [Bibtex]

  @article ISI:000264948000006,
  Author = Belessi, V. and Lambropoulou, D. and Konstantinou, I. and Zboril, R. and
     Tucek, J. and Jancik, D. and Albanis, T. and Petridis, D.,
  Title = Structure and photocatalytic performance of magnetically separable
     titania photocatalysts for the degradation of propachlor,
  Journal = APPLIED CATALYSIS B-ENVIRONMENTAL,
  Year = 2009,
  Volume = 87,
  Number = 3-4,
  Pages = 181-189,
  Month = APR 7,
  Abstract = A magnetic photocatalyst was prepared by modification of TiO(2)
     nanoparticles (Degussa P25) with nanocrystalline gamma-Fe(2)O(3)
     nanoparticles through a protective lining made up of two oppositely
     charged polyelectrolytes. As-prepared magnetically separable
     photocatalysts differing in gamma-Fe(2)O(3) loading (3, 8, 13, 20 and 30
     wt.\%) were characterized by XRD, TEM, thermal analysis, Mossbauer and
     magnetic measurements. The photocatalytic efficiency of the
     nanocomposite catalysts was evaluated using a chloroacetanilide
     herbicide (propachlor) in water as model compound. The primary
     degradation of propachlor followed pseudo-first-order kinetics according
     to the Langmuir-Hinshelwood model. Generally, all magnetic
     photocatalysts exhibit good catalytic activity towards organic
     pollutants, do not suffer from photodissolution and can be reused
     several times without any decrease in their photocatalytic activity. (C)
     2008 Published by Elsevier B.V.,
  DOI = 10.1016/j.apcatb.2008.09.012,
  ISSN = 0926-3373,
  Unique-ID = ISI:000264948000006,
  

• L. Kvitek, M. Vanickova, A. Panacek, J. Soukupova, M. Dittrich, E. Valentova, R. Prucek, M. Bancirova, D. Milde, and R. Zboril, "Initial Study on the Toxicity of Silver Nanoparticles (NPs) against
  Paramecium caudatum," JOURNAL OF PHYSICAL CHEMISTRY C, vol. 113, iss. 11, pp. 4296-4300, 2009.
  [Bibtex]

  @article ISI:000264111300013,
  Author = Kvitek, Libor and Vanickova, Marketa and Panacek, Ales and Soukupova,
     Jana and Dittrich, Milan and Valentova, Eva and Prucek, Robert and
     Bancirova, Martina and Milde, David and Zboril, Radek,
  Title = Initial Study on the Toxicity of Silver Nanoparticles (NPs) against
     Paramecium caudatum,
  Journal = JOURNAL OF PHYSICAL CHEMISTRY C,
  Year = 2009,
  Volume = 113,
  Number = 11,
  Pages = 4296-4300,
  Month = MAR 19,
  Abstract = In this initial study, the toxicity effect of silver NPs against a model
     unicellular eukaryotic organism of Paramecium caudatum was studied. For
     the purpose of this study, a dialysis-based method was adapted, which
     allowed the preparation of stable aqueous dispersions of silver NPs in
     various silver concentrations that were necessary for the evaluation of
     toxicity limits of these particles. The obtained results demonstrate
     that the silver NPs do not exhibit any toxicity action against the
     tested unicellular eukaryotic organism below the concentration of 25 mg
     . L(-1) whereas ionic silver retains its toxicity even at a
     concentration of 0.4 mg . L(-1). Such a considerable difference in the
     toxicity effect of these two forms of silver has not been observed in
     the previously published study concerning bacteria (Panacek, A.; Kvitek,
     L.; Prucek, R.; Koldr, M.; Vecefova, R.; Pizurova, N.; Sharma, V. K.;
     Nevecna, T.; Zboril, R. J. Phys. Chem. B 2006, 110, 16248-16253).
     Additionally, it was proven that the surfactant/polymer modification can
     increase the toxicity of the silver NPs against the tested organism.,
  DOI = 10.1021/jp808645e,
  ISSN = 1932-7447,
  Unique-ID = ISI:000264111300013,
  

• A. B. Bourlinos, T. A. Steriotis, R. Zboril, V. Georgakilas, and A. Stubos, "Direct synthesis of carbon nanosheets by the solid-state pyrolysis of
  betaine," JOURNAL OF MATERIALS SCIENCE, vol. 44, iss. 5, pp. 1407-1411, 2009.
  [Bibtex]

  @article ISI:000263379500035,
  Author = Bourlinos, Athanasios B. and Steriotis, Theodore A. and Zboril, Radek
     and Georgakilas, Vasilios and Stubos, Athanasios,
  Title = Direct synthesis of carbon nanosheets by the solid-state pyrolysis of
     betaine,
  Journal = JOURNAL OF MATERIALS SCIENCE,
  Year = 2009,
  Volume = 44,
  Number = 5,
  Pages = 1407-1411,
  Month = MAR,
  DOI = 10.1007/s10853-009-3263-8,
  ISSN = 0022-2461,
  Unique-ID = ISI:000263379500035,
  

• L. Machala, R. Zboril, V. K. Sharma, J. Filip, D. Jancik, and Z. Homonnay, "Transformation of Solid Potassium Ferrate(VI) (K(2)FeO(4)): Mechanism
  and Kinetic Effect of Air Humidity," EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, iss. 8, pp. 1060-1067, 2009.
  [Bibtex]

  @article ISI:000264683200010,
  Author = Machala, Libor and Zboril, Radek and Sharma, Virender K. and Filip, Jan
     and Jancik, Dalibor and Homonnay, Zoltan,
  Title = Transformation of Solid Potassium Ferrate(VI) (K(2)FeO(4)): Mechanism
     and Kinetic Effect of Air Humidity,
  Journal = EUROPEAN JOURNAL OF INORGANIC CHEMISTRY,
  Year = 2009,
  Number = 8,
  Pages = 1060-1067,
  Month = MAR,
  Abstract = The kinetics of solid-state transformation (aging) of potassium
     ferrate(VI) (K(2)FeO(4)) under various air-humidity conditions (55-95\%
     relative humidity) at room temperature were studied by in-situ Mossbauer
     spectroscopy. The kinetic data showed a significant increase in the
     decomposition rate with increasing air humidity. The decomposition
     kinetics is very unusual with two almost linear decay steps. The first
     slow decay was observable at rather lower humidity levels (55-70\%)
     probably due to the formation of the narrow compact layer of
     nanoparticulate Fe(OH)(3) reaction product. This layer limits the access
     of both H(2)O and CO(2) participating in the reaction as the gaseous
     reactants. The second decay with much faster rate showed a nearly
     positive linear relationship with the humidity. The identification and
     characterization of the final products of aging were conducted by using
     X-ray diffraction (XRD), variable-temperature and in-field Mossbauer
     spectroscopy, magnetic measurements, thermogravimetry (TG) and
     differential scanning calorimetry (DSC), and scanning electron
     microscopy (SEM) techniques. The reaction mechanism, assuming formation
     of KHCO(3) and Fe(OH)(3) in the molar ratio of 2:1 per 1 mol of solid
     K(2)FeO(4) was suggested. The SEM images revealed the formation of large
     KHCO(3) crystallites whose surface was covered by ultrasmall X-ray
     amorphous iron(III) hydroxide nanoparticles in a high degree of
     agglomeration. The obtained results of aging under humid conditions are
     important for the possible storage of K(2)FeO(4) and thus for its
     environmental and industrial applications. ((C) Wiley-VCH Verlag GmbH \&
     Co. KGaA, 69451 Weinheim, Germany, 2009),
  DOI = 10.1002/ejic.200801068,
  ISSN = 1434-1948,
  Unique-ID = ISI:000264683200010,
  

• A. B. Bourlinos, V. Georgakilas, R. Zboril, A. Bakandritsos, A. Stassinopoulos, D. Anglos, and E. P. Giannelis, "Pyrolytic formation and photoluminescence properties of a new layered
  carbonaceous material with graphite oxide-mimicking characteristics," CARBON, vol. 47, iss. 2, pp. 519-526, 2009.
  [Bibtex]

  @article ISI:000262558300019,
  Author = Bourlinos, A. B. and Georgakilas, V. and Zboril, R. and Bakandritsos, A.
     and Stassinopoulos, A. and Anglos, D. and Giannelis, E. P.,
  Title = Pyrolytic formation and photoluminescence properties of a new layered
     carbonaceous material with graphite oxide-mimicking characteristics,
  Journal = CARBON,
  Year = 2009,
  Volume = 47,
  Number = 2,
  Pages = 519-526,
  Month = FEB,
  Abstract = Thermal carbonization of bis(2-chloroethyl)amine hydrochloride at 260
     degrees C in air leads to a new, functional layered carbonaceous
     material that, although different in structure and composition, shares
     similar characteristics as the well-known graphite oxide. Specifically,
     the molecularly derived carbonaceous solid is layered with relatively
     small lateral dimensions, highly dispersible in water providing clear
     colloidal sols and possesses ion-exchange properties. The carbonaceous
     solid strongly fluoresces in the visible, when stimulated with a wide
     range of excitation wavelengths. Overall, the method presents an
     alternative synthesis towards molecularly derived layered carbonaceous
     materials with novel properties. (C) 2008 Elsevier Ltd. All rights
     reserved.,
  DOI = 10.1016/j.carbon.2008.10.044,
  ISSN = 0008-6223,
  Unique-ID = ISI:000262558300019,
  

• I. Cesar, K. Sivula, A. Kay, R. Zboril, and M. Graetzel, "Influence of Feature Size, Film Thickness, and Silicon Doping on the
  Performance of Nanostructured Hematite Photoanodes for Solar Water
  Splitting," JOURNAL OF PHYSICAL CHEMISTRY C, vol. 113, iss. 2, pp. 772-782, 2009.
  [Bibtex]

  @article ISI:000262324600044,
  Author = Cesar, Ilkay and Sivula, Kevin and Kay, Andreas and Zboril, Radek and
     Graetzel, Michael,
  Title = Influence of Feature Size, Film Thickness, and Silicon Doping on the
     Performance of Nanostructured Hematite Photoanodes for Solar Water
     Splitting,
  Journal = JOURNAL OF PHYSICAL CHEMISTRY C,
  Year = 2009,
  Volume = 113,
  Number = 2,
  Pages = 772-782,
  Month = JAN 15,
  Abstract = Photoanodes consisting of nanostructured hematite prepared by
     atmospheric pressure chemical vapor deposition (APCVD) have previously
     set a benchmark for solar water splitting. Here, we fully investigate
     this promising system by varying critical synthetic parameters and
     probing the photoanode performance to determine the major factors that
     influence operation. By varying the film thickness, we show film growth
     to be linear with an incubation time. We find no concern with electron
     transport for films up to 600 nm, but a higher recombination rate of
     photogenerated carriers in the hematite near the interface with the
     fluorine-doped tin oxide, as compared to the bulk section of the film.
     ne mechanism for the formation of the thin film's nanoporous dendritic
     structure is discussed on the basis of the results from varying the
     substrate growth temperate. The observed feature sizes of the film are
     found to depend strongly on this temperature and the presence of silicon
     dopant precursor (TEOS). Raman and Mossbauer experiments reveal how
     temperature and doping affect the crystallinity and ultimately the
     photoperformance. We also use impedance spectroscopy to find evidence
     for an unusually high donor density, which allows the formation of a
     space-charge field inside the nanosized features of the polycrystalline
     hematite photoanode.,
  DOI = 10.1021/jp809060p,
  ISSN = 1932-7447,
  Unique-ID = ISI:000262324600044,
  

• R. Prucek, L. Kvitek, A. Panacek, L. Vancurova, J. Soukupova, D. Jancik, and R. Zboril, "Polyacrylate-assisted synthesis of stable copper nanoparticles and
  copper(I) oxide nanocubes with high catalytic efficiency," JOURNAL OF MATERIALS CHEMISTRY, vol. 19, iss. 44, pp. 8463-8469, 2009.
  [Bibtex]

  @article ISI:000271744600027,
  Author = Prucek, Robert and Kvitek, Libor and Panacek, Ales and Vancurova, Lenka
     and Soukupova, Jana and Jancik, Dalibor and Zboril, Radek,
  Title = Polyacrylate-assisted synthesis of stable copper nanoparticles and
     copper(I) oxide nanocubes with high catalytic efficiency,
  Journal = JOURNAL OF MATERIALS CHEMISTRY,
  Year = 2009,
  Volume = 19,
  Number = 44,
  Pages = 8463-8469,
  Abstract = The synthesis of Cu nanoparticles (NPs) via the reduction of Cu ions
     with sodium borohydride in the presence of sodium polyacrylate is
     presented. The final Cu nanocrystals having a 14 nm diameter were
     generated via the aggregation and coalescence of the primarily formed
     ultrasmall particles (approx. 3 nm). Addition of sodium sulfite to the
     dispersions provided the protection of the Cu NPs against oxidation. On
     the other hand, the controlled aeration of the Cu NPs resulted in their
     transformation to Cu(2)O nanocubes with an average size of 18 nm. Both
     Cu NPs and Cu(2)O nanocubes can effectively catalyze reduction of
     4-nitrophenol by sodium borohydride in aqueous solution.,
  DOI = 10.1039/b913561h,
  ISSN = 0959-9428,
  Unique-ID = ISI:000271744600027,
  

• R. Herchel, Z. Sindelar, Z. Travnicek, R. Zboril, and J. Vanco, "Novel 1D chain Fe(III)-salen-like complexes involving anionic
  heterocyclic N-donor ligands. Synthesis, X-ray structure, magnetic,
  (57)Fe Mossbauer, and biological activity studies," DALTON TRANSACTIONS, iss. 44, pp. 9870-9880, 2009.
  [Bibtex]

  @article ISI:000271432600028,
  Author = Herchel, Radovan and Sindelar, Zdenek and Travnicek, Zdenek and Zboril,
     Radek and Vanco, Jan,
  Title = Novel 1D chain Fe(III)-salen-like complexes involving anionic
     heterocyclic N-donor ligands. Synthesis, X-ray structure, magnetic,
     (57)Fe Mossbauer, and biological activity studies,
  Journal = DALTON TRANSACTIONS,
  Year = 2009,
  Number = 44,
  Pages = 9870-9880,
  Abstract = The iron(III) salen-type complexes [Fe(salen)(L)](n) (1-6) involving
     heterocyclic N-donor ligands HL \HL = 1H-imidazole (Himz),
     1H-tetrazol-5-amine (Hatz), 5-methyl-1H-tetrazole (Hmtz),
     1H-benzimidazole (Hbimz), 1H-1,2,4-triazole (Htriz) and 1H-benzotriazole
     (Hbtriz)\ have been prepared and characterised by elemental analysis,
     FT IR, CI mass and (57)Fe Mossbauer spectroscopies, and variable
     temperature magnetic measurements. Single crystal X-ray analysis of
     [Fe(salen)(btriz)](n) (6) revealed a 1D chain-polymeric structure of
     the complex with the btriz anion as a bridging ligand. Magnetic data for
     all complexes were fitted using Fisher's model (for S = 5/2) and also
     using a heptanuclear closed ring model showing a weak antiferromagnetic
     interaction (J approximate to -1 to -2 cm(-1)), and moreover,
     molecule-based magnet properties have been observed in the case of
     [Fe(salen)(atz)](n) (2). The exponential correlation between the
     magnetic properties (the isotropic exchange parameter J) and the
     basicity of the free ligands (K(b)) has been found. The
     antiferromagnetic ordering as well as a moderate structural
     dissimilarity in the vicinity of iron atoms has been proved by the
     (57)Fe Mossbauer low-temperature (2 K) in-field (7 T) experiments in the
     case of (2), in which two sextets with the line intensities
     (3/4/1/3/4/1) have been observed. The compounds have been tested for
     their SOD-like activity, DNA cleavage activity, and in vitro
     cytotoxicity against two human cancer cell lines: chronic myelogenous
     erythroleukemia (K562) and breast adenocarcinoma (MCF7). The best result
     regarding the cytotoxicity has been achieved for the complex of
     [Fe(salen)(atz)](n) (2), where IC(50) = 6.4 mu M against K562.,
  DOI = 10.1039/b912676g,
  ISSN = 1477-9226,
  Unique-ID = ISI:000271432600028,
  

• Z. Markova, M. Pecova, L. Zajoncova, J. Zboril, and R. Zboril, "SURFACE ENGINEERING OF IRON OXIDE NANOPARTICLES ISOLATED FROM
  MAGNETOSPIRILLUM GRYPHISWALDENSE FOR BIOCHEMICAL AND BIOMEDICAL
  APPLICATIONS," in NANOCON 2009, CONFERENCE PROCEEDINGS, 2009, pp. 311-317.
  [Bibtex]

  @inproceedings ISI:000277025600047,
  Author = Markova, Zdenka and Pecova, Michaela and Zajoncova, Ludmila and Zboril,
     Jiri and Zboril, Radek,
  Book-Group-Author = TANGER, Ltd
     CSNMT
     MRSS
     NMS,
  Title = SURFACE ENGINEERING OF IRON OXIDE NANOPARTICLES ISOLATED FROM
     MAGNETOSPIRILLUM GRYPHISWALDENSE FOR BIOCHEMICAL AND BIOMEDICAL
     APPLICATIONS,
  Booktitle = NANOCON 2009, CONFERENCE PROCEEDINGS,
  Year = 2009,
  Pages = 311-317,
  Note = 1st NANOCON International Conference, Roznov pod Radhostem, CZECH
     REPUBLIC, OCT 20-22, 2009,
  Abstract = Superparamagnetic iron oxide nanoparticles with appropriate surface
     modification can be widely used in various applications including
     magnetic resonance imaging (MRI) diagnostic contrast agents, anticancer
     therapy using hyperthermia, magnetic drug targeting, protein and enzyme
     immobilization, cell labeling and separation or RNA and DNA purification
     All these biochemical and biomedical applications require nanoparticles
     exhibiting a high magnetization and narrow size distribution and
     possessing non-toxicity and biocompatibility
     As a result of biologically controlled preparation, biogenic magnetite
     (Fe(3)O(4)) nanoparticles have properties that make them intrinsically
     distinct from their synthetic counterparts Magnetotactic bacteria are
     microorganisms that are able to biomineralize the membrane-enveloped
     crystals of magnetite called magnetosomes Magnetospirillum
     gryphiswaldense, well laboratory cultured organism, produces
     cubooctahedral magnetite crystals ranging in size between 20 and 50 nm
     The fermentor cultivation under microaerobic conditions, commonly
     performed in our lab, leads to the sufficiently high cell yield
     (OD(565nm) similar to, 1 5) and to the suitable values of the parameter
     describing the cell magnetism (c(mag) similar to 1) Magnetosomes are
     consequently isolated from bacteria by method using neodynium boron
     (Nd-B) magnet. In the present work, we coated biogenic magnetite with
     substances that make them biocompatible, biodegradable, stable,
     non-toxic and accessible for binding with various active biocomponents
     depending on particular bioapplication The natural polymers such as
     chitosan, N-trimethylchitosan, carboxymethylchitosan or dextran have
     been used in a coating procedure and the properties of the core-shell
     systems have been analyzed by TEM, SEM and SQUID magnetic measurements
     The magnetite nanoparticles modified by chitosan exhibit the most
     perfect and complete surface stabilization as evidenced by the narrow
     and well defined shell. These nanoparticles were successfully tested in
     the trypsin immobilization for applications in proteomics, where they
     revealed the superior properties compared to the synthetic counterparts,
  ISBN = 978-80-87294-13-0,
  Unique-ID = ISI:000277025600047,
  

2008

• A. B. Bourlinos, V. Georgakilas, and R. Zboril, "Easy deposition of amorphous carbon films on glass substrates," CARBON, vol. 46, iss. 13, pp. 1801-1804, 2008.
  [Bibtex]

  @article ISI:000260736000024,
  Author = Bourlinos, A. B. and Georgakilas, V. and Zboril, R.,
  Title = Easy deposition of amorphous carbon films on glass substrates,
  Journal = CARBON,
  Year = 2008,
  Volume = 46,
  Number = 13,
  Pages = 1801-1804,
  Month = NOV,
  Abstract = The easy fabrication of amorphous carbon films on glass substrates is
     described. The films are obtained by a simple gas phase deposition
     technique that takes place in air under mild conditions (400 degrees C,
     ambient pressure). The experimental set-up is straightforward and can be
     routinely applied for the large-scale fabrication of high quality carbon
     films, while, the carbon source is a decomposable polymer precursor
     (polyvinylpyrrolidone, PVP). (C) 2008 Elsevier Ltd. All rights reserved.,
  DOI = 10.1016/j.carbon.2008.07.013,
  ISSN = 0008-6223,
  Unique-ID = ISI:000260736000024,
  

• T. M. Triantis, K. Papadopoulos, E. Yannakopoulou, D. Dimotikali, J. Hrbac, and R. Zboril, "Sensitized chemiluminescence of luminol catalyzed by colloidal
  dispersions of nanometer-sized ferric oxides," CHEMICAL ENGINEERING JOURNAL, vol. 144, iss. 3, pp. 483-488, 2008.
  [Bibtex]

  @article ISI:000261075300017,
  Author = Triantis, T. M. and Papadopoulos, K. and Yannakopoulou, E. and
     Dimotikali, D. and Hrbac, J. and Zboril, R.,
  Title = Sensitized chemiluminescence of luminol catalyzed by colloidal
     dispersions of nanometer-sized ferric oxides,
  Journal = CHEMICAL ENGINEERING JOURNAL,
  Year = 2008,
  Volume = 144,
  Number = 3,
  Pages = 483-488,
  Month = NOV 1,
  Abstract = Colloidal solutions of ferric oxide nanoparticles of different particle
     size and surface area characteristics enhance the intensity of the
     chemiluminescent (CL) reaction of luminol with hydrogen peroxide up to
     18-fold and accelerate the rate of the reaction time to 86-fold. The
     sample with the highest enhancement was applied in the determination of
     hydrogen peroxide and the estimation of hydrogen peroxide scavenging
     activity of selected antioxidant compounds. Hydrogen peroxide was
     determined down to 1.25 x 10(-3) M (S/N = 3). Regarding the hydrogen
     peroxide scavenging activities of the selected organic antioxidants it.
     was found that mono- and dihydroxylated phenols (tyrosol, catechin and
     caffeic acid) exhibit up to one order of magnitude higher scavenging
     activity than trihydroxylated phenols (gallic acid and pyrrogallic
     acid), vitamins E and C, and amino acid cysteine. (c) 2008 Elsevier B.V.
     All rights reserved.,
  DOI = 10.1016/j.cej.2008.07.035,
  ISSN = 1385-8947,
  Unique-ID = ISI:000261075300017,
  

• Z. Travnicek, J. Mikulik, M. Cajan, R. Zboril, and I. Popa, "Novel iron complexes bearing N6-substituted adenosine derivatives:
  Synthesis, magnetic, (57)Fe Mossbauer, DFT, and in vitro cytotoxicity
  studies," BIOORGANIC & MEDICINAL CHEMISTRY, vol. 16, iss. 18, pp. 8719-8728, 2008.
  [Bibtex]

  @article ISI:000259173400046,
  Author = Travnicek, Zdenek and Mikulik, Jiri and Cajan, Michal and Zboril, Radek
     and Popa, Igor,
  Title = Novel iron complexes bearing N6-substituted adenosine derivatives:
     Synthesis, magnetic, (57)Fe Mossbauer, DFT, and in vitro cytotoxicity
     studies,
  Journal = BIOORGANIC \& MEDICINAL CHEMISTRY,
  Year = 2008,
  Volume = 16,
  Number = 18,
  Pages = 8719-8728,
  Month = SEP 15,
  Abstract = Iron complexes (1-7) involving N6-benzyladenosine derivatives of the
     predominant composition [Fe(L(n))Cl(3)]center dot H(2)O \where L(1) =
     N6-(2-fluorobenzyl)adenosine (1), L(2) = N6-(4-fluorobenzyl)adenosine
     (2), L(3) = N6-(2-trifluoromethylbenzyl)adenosine (3), L(4) =
     N6-(3-trifluoromethylbenzyl)adenosine (4), L(5) =
     N6-(4-trifluoromethylbenzyl)adenosine (5), L(6) =
     N6-(4-trifluoromethoxybenzyl)adenosine (6), and L(7) =
     N6-(4-chlorobenzyl)adenosine (7)\ have been synthesized. The compounds
     have been characterized by elemental analysis, variable-temperature and
     in-field (57)Fe Mossbauer, ES+ MS, FTIR, (1)H and (13)C NMR
     spectroscopies, magnetochemical and conductivity measurements, thermal
     (TGA/DSC/DTA) analyses, and DFT calculations. It has been found that the
     organic molecule is coordinated to iron via N7 atom of the appropriate
     adenosine derivative and the products are represented by mixtures of
     complexes with various iron oxidation (Fe(III)/Fe(II)) and spin states
     (S = 5/2, 4/2, 3/2, 2/2) and geometries (tetrahedral or trigonal
     bipyramidal). It is caused by the fact that partial redox processes
     proceed during the reactions due to the presence of a ribose moiety,
     which is oxidized to the corresponding 5'-ribotic acid, and
     simultaneously, a portion of Fe(III) cations is reduced to Fe(II) ones.
     Moreover, a significant effect of crystal water molecules on
     stereochemistry, and hence, on magnetic and spectral properties of the
     prepared complexes has been found. The compounds have been tested for
     their in vitro cytotoxicity against the following human cancer cell
     lines: malignant melanoma (G-361), osteogenic sarcoma (HOS), chronic
     myelogenous leukemia (K-562), and breast adenocarcinoma (MCF-7). The
     most important results have been obtained for complex 2 with IC(50)
     values 8-16 mu M against HOS, K-562, and MCF-7 cell lines, and for
     complex 6 with IC50 value 4 mu M against MCF-7 cell line. (C) 2008
     Elsevier Ltd. All rights reserved.,
  DOI = 10.1016/j.bmc.2008.07.082,
  ISSN = 0968-0896,
  Unique-ID = ISI:000259173400046,
  

• J. Soukupova, L. Kvitek, A. Panacek, T. Nevecna, and R. Zboril, "Comprehensive study on surfactant role on silver nanoparticles (NPs)
  prepared via modified Tollens process," MATERIALS CHEMISTRY AND PHYSICS, vol. 111, iss. 1, pp. 77-81, 2008.
  [Bibtex]

  @article ISI:000257450300017,
  Author = Soukupova, Jana and Kvitek, Libor and Panacek, Ales and Nevecna,
     Tat'jana and Zboril, Radek,
  Title = Comprehensive study on surfactant role on silver nanoparticles (NPs)
     prepared via modified Tollens process,
  Journal = MATERIALS CHEMISTRY AND PHYSICS,
  Year = 2008,
  Volume = 111,
  Number = 1,
  Pages = 77-81,
  Month = SEP 15,
  Abstract = Surfactants represent not only commonly used wetting agents but also
     substances that can be used as growth modifiers in the process of solid
     nanoparticle (NP) preparation. In this study we report influential
     character of different types of surfactants - i.e. ionic (SDS, CTAC) and
     non-ionic (Tween 80) - on fundamental characteristics of silver NPs,
     which were prepared by a modified Tollens process. The influential
     character of surfactants was evaluated throughout a reasonable
     improvement of the polyclispersity (in the case of the tested non-ionic
     surfactants from 8.5\% even down to 2.5\%) and in the case of ionic
     surfactant, SDS and CTAC, also significant change of zeta potential
     (from -20 to -50 mV for the highest tested concentration of SDS). A
     slight influence of the tested surfactants was observed on the sizes of
     the prepared silver NPs. Therefore the obtained results from the
     performed surfactant-assisted syntheses revealed a possibility how to
     tailor silver NPs by means of their polydispersity and zeta potential
     according to the application demands. (c) 2008 Elsevier B.V. All rights
     reserved.,
  DOI = 10.1016/j.matchemphys.2008.03.018,
  ISSN = 0254-0584,
  Unique-ID = ISI:000257450300017,
  

• M. Hermanek and R. Zboril, "Polymorphous Exhibitions of Iron(III) Oxide during Isothermal Oxidative
  Decompositions of Iron Salts: A Key Role of the Powder Layer Thickness," CHEMISTRY OF MATERIALS, vol. 20, iss. 16, pp. 5284-5295, 2008.
  [Bibtex]

  @article ISI:000258580500027,
  Author = Hermanek, Martin and Zboril, Radek,
  Title = Polymorphous Exhibitions of Iron(III) Oxide during Isothermal Oxidative
     Decompositions of Iron Salts: A Key Role of the Powder Layer Thickness,
  Journal = CHEMISTRY OF MATERIALS,
  Year = 2008,
  Volume = 20,
  Number = 16,
  Pages = 5284-5295,
  Month = AUG 26,
  Abstract = Thermal decomposition of iron(II) oxalate dihydrate, FeC2O4 center dot
     2H(2)O, was studied under isothermal conditions in air by using of X-ray
     diffraction (XRD), transmission electron microscopy (TEM), magnetic
     measurements, and Mossbauer spectroscopy. Direct in situ monitoring of
     sample temperature was found to be a breaking point in understanding the
     decomposition mechanism resulting in different polymorphous product
     compositions which are simultaneously dependent on the powder layer
     thickness and reaction temperature. At a certain temperature, there
     exists a critical sample layer thickness (weight, m(c)), below which the
     optimal oxygen access into the whole powder volume is enabled and the
     reaction proceeds under truly isothermal conditions. In such a case
     hematite (alpha-Fe2O3) is the only crystalline decomposition product.
     Above m(c), at worsened diffusion conditions, a dramatic time-limited
     increase in the sample temperature has been observed. The appearance of
     such an ``exoeffect'' is a consequence of the violent diffusion of air
     oxygen inside the sample volume which depends precisely on the layer
     thickness and set temperature. During this exothermal stage of the
     reaction process the changes in kinetics and mechanism of decomposition
     are evidenced by an abrupt fall in the oxalate content and by the
     formation of the vacant structure of maghemite (gamma-Fe2O3). The
     generalization of these phenomena has been demonstrated by several
     examples of oxidative decompositions of other metal salts, where the
     analogous exoeffect has been detected and various polymorphous mixtures
     containing alpha-, beta-, gamma-, and/or amorphous Fe2O3 have been
     identified among the reaction products. Our findings explain
     unambiguously the literature discrepancies concerning the different
     phase compositions of samples prepared by the ``isothermal''
     solid-state decomposition processes. What is more, when the key reaction
     parameters are precisely controlled, single-phase nanocrystalline
     products possessing superior properties can be obtained.,
  DOI = 10.1021/cm8011827,
  ISSN = 0897-4756,
  Unique-ID = ISI:000258580500027,
  

• A. B. Bourlinos, V. Georgakilas, R. Zboril, D. Jancik, M. A. Karakassides, A. Stassinopoulos, D. Anglos, and E. P. Giannelis, "Reaction of graphite fluoride with NaOH-KOH eutectic," JOURNAL OF FLUORINE CHEMISTRY, vol. 129, iss. 8, pp. 720-724, 2008.
  [Bibtex]

  @article ISI:000259723000011,
  Author = Bourlinos, Athanasios B. and Georgakilas, Vasilios and Zboril, Radek and
     Jancik, Dalibor and Karakassides, Michael A. and Stassinopoulos, Andreas
     and Anglos, Demetrios and Giannelis, Emmanuel P.,
  Title = Reaction of graphite fluoride with NaOH-KOH eutectic,
  Journal = JOURNAL OF FLUORINE CHEMISTRY,
  Year = 2008,
  Volume = 129,
  Number = 8,
  Pages = 720-724,
  Month = AUG,
  Abstract = Graphite fluoride has been generally considered chemically inert against
     strong alkalis under ambient conditions. In the present study we
     demonstrate that treatment of graphite fluoride with eutectic NaOH-KOH
     mixture at 250 degrees C induces dramatic structural and textural
     changes in the solid as evidenced by XRD, FT-IR, Raman, UV-vis
     absorption and fluorescence and microscopy techniques (TEM, AFM). The
     reaction proceeds in the molten state leading to water-soluble,
     graphitized carbon particles which unlike graphite fluoride, adopt a
     variety of morphologies, like platy, tetragonal, triangular, discoid and
     spherical. The resulting carbon particles are dispersible in water and
     fluoresce under UV excitation. (c) 2008 Elsevier B.V. All rights
     reserved.,
  DOI = 10.1016/j.jfluchem.2008.05.020,
  ISSN = 0022-1139,
  Unique-ID = ISI:000259723000011,
  

• A. B. Bourlinos, A. Stassinopoulos, D. Anglos, R. Zboril, V. Georgakilas, and E. P. Giannelis, "Photoluminescent carbogenic dots," CHEMISTRY OF MATERIALS, vol. 20, iss. 14, pp. 4539-4541, 2008.
  [Bibtex]

  @article ISI:000257666300003,
  Author = Bourlinos, Athanasios B. and Stassinopoulos, Andreas and Anglos,
     Demetrios and Zboril, Radek and Georgakilas, Vasilios and Giannelis,
     Emmanuel P.,
  Title = Photoluminescent carbogenic dots,
  Journal = CHEMISTRY OF MATERIALS,
  Year = 2008,
  Volume = 20,
  Number = 14,
  Pages = 4539-4541,
  Month = JUL 22,
  DOI = 10.1021/cm800506r,
  ISSN = 0897-4756,
  Unique-ID = ISI:000257666300003,
  

• A. Bakandritsos, N. Bouropoulos, R. Zboril, K. Iliopoulos, N. Boukos, G. Chatzikyriakos, and S. Couris, "Optically active spherical polyelectrolyte brushes with a
  nanocrystalline magnetic core," ADVANCED FUNCTIONAL MATERIALS, vol. 18, iss. 11, pp. 1694-1706, 2008.
  [Bibtex]

  @article ISI:000257259400013,
  Author = Bakandritsos, Aristides and Bouropoulos, Nikos and Zboril, Radek and
     Iliopoulos, Kostas and Boukos, Nikos and Chatzikyriakos, George and
     Couris, Stelios,
  Title = Optically active spherical polyelectrolyte brushes with a
     nanocrystalline magnetic core,
  Journal = ADVANCED FUNCTIONAL MATERIALS,
  Year = 2008,
  Volume = 18,
  Number = 11,
  Pages = 1694-1706,
  Month = JUN 11,
  Abstract = The unique properties of magnetic nanocrystals have triggered intensive
     research towards their effective functionalization and application in
     many technological fields. Although synthesis of magnetic. colloids is
     being thoroughly studied, there is limited knowledge on the synthesis,
     characterization, and properties of magnetic polyelectrolyte spherical
     brushes. In the present work, the preparation of such hybrids and the
     subsequent formation of stable aqueous colloids are described. The core
     of the spherical brush consists of a magnetic gamma-Fe(2)O(3)
     nanocrystallite (faceted but mostly spherical-like) with a mean diameter
     of 17 nm. The bioadhesive polyelectrolyte poly(sodium 4-styrene
     sulfonate), forming the surrounding brush layer, was proven to be an
     effective covalently modifying macromolecule for the iron oxide surface,
     as Fourier transform IR spectroscopy revealed. Several observations on
     colloidal aspects are discussed and are successfully explained by models
     and experiments describing polyelectrolyte brushes with a soft polymeric
     core. Finally, the hybrids exhibit their multifunctional character and
     their technological importance by combining in a single and soluble
     product with magnetic and nonlinear optical properties.,
  DOI = 10.1002/adfm.200701335,
  ISSN = 1616-301X,
  Unique-ID = ISI:000257259400013,
  

• V. Belessi, R. Zboril, J. Tucek, M. Mashlan, V. Tzitzios, and D. Petridis, "Ferrofluids from magnetic-chitosan hybrids," CHEMISTRY OF MATERIALS, vol. 20, iss. 10, pp. 3298-3305, 2008.
  [Bibtex]

  @article ISI:000256056600011,
  Author = Belessi, V. and Zboril, R. and Tucek, J. and Mashlan, M. and Tzitzios,
     V. and Petridis, D.,
  Title = Ferrofluids from magnetic-chitosan hybrids,
  Journal = CHEMISTRY OF MATERIALS,
  Year = 2008,
  Volume = 20,
  Number = 10,
  Pages = 3298-3305,
  Month = MAY 27,
  Abstract = Magnetic nanoparticles coated with chitosan or quaternized chitosan were
     synthesized by a new route and characterized by X-ray diffraction (XRD),
     transmission electron microscopy (TEM), temperature dependent and
     in-field Mossbauer spectroscopy, FTIR, thermal analysis (TG/DTA), zeta
     potential, and magnetic measurements. The prepared ferrofluids were
     stable for a relatively long time. Mossbauer spectra recorded in an
     external magnetic field of 5 T establish the formation of
     ``nonstoichiometric magnetite'' exhibiting the perfect ferrimagnetic
     ordering with a low degree of spin canting and frustration. Magnetic
     measurements confirm the desired properties of the magnetic chitosan for
     biomedical applications including the superparamagnetic character at
     room temperature and a high saturation magnetization achievable at low
     applied fields. The successful and full capping of particles is
     indicated mainly from magnetic and DTA data through the suppressed
     interparticle interactions and a significant shift in the transformation
     temperature of the magnetic cores to hematite. The core-shell structure
     is definitely proved by TEM observations showing the well crystalline
     cubic particles with the log-normal size distribution between 10 and 40
     nm, which are fully coated with narrow shell of the chitosan matrix.,
  DOI = 10.1021/cm702990t,
  ISSN = 0897-4756,
  Unique-ID = ISI:000256056600011,
  

• V. Georoakilas, A. B. Bourlinos, R. Zboril, and C. Trapalis, "Synthesis, characterization and aspects of superhydrophobic
  functionalized carbon nanotubes," CHEMISTRY OF MATERIALS, vol. 20, iss. 9, pp. 2884-2886, 2008.
  [Bibtex]

  @article ISI:000255623400014,
  Author = Georoakilas, Vasilios and Bourlinos, Athanasios B. and Zboril, Radek and
     Trapalis, Christos,
  Title = Synthesis, characterization and aspects of superhydrophobic
     functionalized carbon nanotubes,
  Journal = CHEMISTRY OF MATERIALS,
  Year = 2008,
  Volume = 20,
  Number = 9,
  Pages = 2884-2886,
  Month = MAY 13,
  DOI = 10.1021/cm7034079,
  ISSN = 0897-4756,
  Unique-ID = ISI:000255623400014,
  

• L. Kvitek, A. Panacek, J. Soukupova, M. Kolar, R. Vecerova, R. Prucek, M. Holecova, and R. Zboril, "Effect of surfactants and polymers on stability and antibacterial
  activity of silver nanoparticles (NPs)," JOURNAL OF PHYSICAL CHEMISTRY C, vol. 112, iss. 15, pp. 5825-5834, 2008.
  [Bibtex]

  @article ISI:000254883100021,
  Author = Kvitek, Libor and Panacek, Ales and Soukupova, Jana and Kolar, Milan and
     Vecerova, Renata and Prucek, Robert and Holecova, Mirka and Zboril,
     Radek,
  Title = Effect of surfactants and polymers on stability and antibacterial
     activity of silver nanoparticles (NPs),
  Journal = JOURNAL OF PHYSICAL CHEMISTRY C,
  Year = 2008,
  Volume = 112,
  Number = 15,
  Pages = 5825-5834,
  Month = APR 17,
  Abstract = In this first systematic study, we describe the influence of various
     surfactants and polymers on aggregation stability and antibacterial
     activity of silver nanoparticles (NPs) prepared by a modified Tollens
     process. The surfactant/polymer stabilizing effect was monitored using
     the newly established method based on a titration of the aqueous
     dispersion of the silver NPs by aqueous solution of
     poly(diallyldimethylammonium) chloride (PDDA). The aggregation process
     was evaluated by the dynamic light scattering (DLS) and UV/vis spectra
     measurements and finally confirmed by TEM. Among all of the investigated
     modifiers, two surfactants (sodium dodecyl sulfate-SDS and
     polyoxyethylenesorbitane monooleate-Tween 80) and one polymer
     (polyvinylpyr-rolidone-PVP 360) exhibit superior stabilization of the
     silver NP dispersions against the process of aggregation. The
     differences in the stabilization ability of various tested substances
     are discussed with respect to their structure and possible mechanism of
     the surface interaction with the NPs. The antibacterial activity of the
     modified silver NPs was significantly enhanced especially when modified
     by SDS where the minimum inhibition concentration (MIC) decreased under
     the ``magical value'' of 1 mu g(.)mL(-1). A correlation was found
     between the aggregation stability and enhanced antibacterial activity in
     the system of the silver NPs modified by SDS, Tween 80, and high
     molecular polymer PVP 360.,
  DOI = 10.1021/jp711616v,
  ISSN = 1932-7447,
  Unique-ID = ISI:000254883100021,
  

• R. A. Yngard, V. K. Sharma, J. Filip, and R. Zboril, "Ferrate(VI) oxidation of weak-acid dissociable cyanides," ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 42, iss. 8, pp. 3005-3010, 2008.
  [Bibtex]

  @article ISI:000254890400054,
  Author = Yngard, Ria A. and Sharma, Virender K. and Filip, Jan and Zboril, Radek,
  Title = Ferrate(VI) oxidation of weak-acid dissociable cyanides,
  Journal = ENVIRONMENTAL SCIENCE \& TECHNOLOGY,
  Year = 2008,
  Volume = 42,
  Number = 8,
  Pages = 3005-3010,
  Month = APR 15,
  Abstract = Cyanide is commonly found in electroplating, mining, coal gasification,
     and petroleum refining effluents, which require treatment before being
     discharged. Cyanide in effluents exists either as free cyanide or as a
     metal complex. The kinetics of the oxidation of weak-acid dissociable
     cyanides by an environmentally friendly oxidant, ferrate(VI)
     ((FeO42-)-O-VI , Fe(Vl)), were studied as a function of pH (9.1-10.5)
     and temperature (15-45 degrees C) using a stopped-flow technique. The
     weak-acid dissociable cyanides were Cd(CN)(4)(2-) and Ni(CN)(4)(2-), and
     the rate-laws for the oxidation maybe
     -d[Fe(Vl)]/dt=k[Fe(VI)][M(CN)(4)(2-)](n) where n = 0.5 and 1 for
     Cd(CN)(4)(2-) and Ni(CN)(4)(2-), respectively. The rates decreased with
     increasing pH and were mostly related to a decrease in concentration of
     the reactive protonated Fe(VI) species, HFeO4-. The stoichiometries with
     Fe(VI) were determined to be: 4HFeO(4-) + M(CN)(4)(2-) + 6H(2)O ->
     4Fe(OH)(3) + M2+ + 4NCO(-) + O-2 + 40H(-). Mechanisms are proposed that
     agree with the observed reaction rate-laws and stoichiometries of the
     oxidation of weak-acid dissociable cyanides by Fe(VI). Results indicate
     that Fe(VI) is effective in removing cyanide in coke oven plant
     effluent, where organics are also present.,
  DOI = 10.1021/es0720816,
  ISSN = 0013-936X,
  Unique-ID = ISI:000254890400054,
  

• A. B. Bourlinos, A. Stassinopoulos, D. Anglos, R. Zboril, M. Karakassides, and E. P. Giannelis, "Surface functionalized carbogenic quantum dots," SMALL, vol. 4, iss. 4, pp. 455-458, 2008.
  [Bibtex]

  @article ISI:000255620400013,
  Author = Bourlinos, Athanasios B. and Stassinopoulos, Andreas and Anglos,
     Demetrios and Zboril, Radek and Karakassides, Michael and Giannelis,
     Emmanuel P.,
  Title = Surface functionalized carbogenic quantum dots,
  Journal = SMALL,
  Year = 2008,
  Volume = 4,
  Number = 4,
  Pages = 455-458,
  Month = APR,
  DOI = 10.1002/smll.200700578,
  ISSN = 1613-6810,
  Unique-ID = ISI:000255620400013,
  

• R. Zboril, A. Bakandritsos, M. Mashlan, V. Tzitzios, P. Dallas, C. Trapalis, and D. Petridis, "One-step solid state synthesis of capped gamma-Fe(2)O(3)
  nanocrystallites," NANOTECHNOLOGY, vol. 19, iss. 9, 2008.
  [Bibtex]

  @article ISI:000254173900015,
  Author = Zboril, R. and Bakandritsos, A. and Mashlan, M. and Tzitzios, V. and
     Dallas, P. and Trapalis, Ch and Petridis, D.,
  Title = One-step solid state synthesis of capped gamma-Fe(2)O(3)
     nanocrystallites,
  Journal = NANOTECHNOLOGY,
  Year = 2008,
  Volume = 19,
  Number = 9,
  Month = MAR 5,
  Abstract = The thermally induced solid state synthesis of soluble organophilic
     maghemite (gamma-Fe(2)O(3)) nanocrystallites is described. The
     solvent-free one-step synthesis involves the reaction in the melt state
     of Fe(NO)(3)center dot 9H(2)O and RCOOH (R = C(11)H(23), C(15)H(31)) at
     240 degrees C. The method yields well-crystallized nanoparticles of
     gamma-Fe(2)O(3) functionalized with the corresponding aliphatic acid.
     Transmission electron microscopy (TEM) and atomic force microscopy (AFM)
     observations reveal composite particles with faceted magnetic cores and
     average size of 20 nm, which are well capped with the surrounding
     organic sheath. The Fourier transform infrared (FT-IR) spectra and
     thermal analysis suggest a bimodal configuration of the organic shell
     including chemically coordinated and physisorbed molecules of aliphatic
     acid. The chemical bonding of the carboxylate groups to the surface iron
     atoms is also indicated by a paramagnetic doublet with unchanged area in
     the variable temperature Mossbauer spectra. The spinel gamma-Fe(2)O(3)
     particles exhibit perfect structural and magnetic ordering, including
     the almost ideal ratio of octahedral to tetrahedral positions (5/3) and
     very low degree of spin canting, as confirmed by in-field Mossbauer
     spectroscopy. Magnetic measurements demonstrate the suitable properties
     required in various (bio) magnetic applications like superparamagnetic
     behavior at room temperature, high saturation magnetization achievable
     at low applied fields and suppressed magnetic interactions.,
  DOI = 10.1088/0957-4484/19/9/095602,
  Article-Number = 095602,
  ISSN = 0957-4484,
  Unique-ID = ISI:000254173900015,
  

• J. Pinkas, V. Reichlova, R. Zboril, Z. Moravec, P. Bezdicka, and J. Matejkova, "Sonochemical synthesis of amorphous nanoscopic iron(III) oxide from
  Fe(acac)(3)," ULTRASONICS SONOCHEMISTRY, vol. 15, iss. 3, pp. 257-264, 2008.
  [Bibtex]

  @article ISI:000252905500016,
  Author = Pinkas, Jiri and Reichlova, Vendula and Zboril, Radek and Moravec,
     Zdenek and Bezdicka, Petr and Matejkova, Jirina,
  Title = Sonochemical synthesis of amorphous nanoscopic iron(III) oxide from
     Fe(acac)(3),
  Journal = ULTRASONICS SONOCHEMISTRY,
  Year = 2008,
  Volume = 15,
  Number = 3,
  Pages = 257-264,
  Month = MAR,
  Abstract = Amorphous nanoscopic iron(III) oxide with interesting magnetic
     properties was prepared by sonolysis of Fe(acac)(3) under Ar in
     tetraglyme with a small amount of added water. The organics content and
     the surface area of the Fe2O3 nanoparticles can be controlled with an
     amount of water in the reaction mixture and it increases from 48 m(2)
     g(-1) for dry solvent up to 260 m(2) g(-1) when wet Ar is employed. For
     further monitoring of the particle size and morphology and for the study
     of the surface, magnetic and thermal properties, the sample with 2
     vol.\% of H2O was chosen. SEM showed nanoscopic composite particles of a
     uniform size distribution and nearly spherical shapes with an estimated
     diameter of 20 nm. Such composites are built from amorphous iron(III)
     oxide nanoparticles (3 nm) embedded in an acetate matrix as proved by
     TEM and IR spectroscopy. Temperature-dependent Mossbauer spectra
     demonstrate a very narrow magnetic transition with an unusually low
     transition temperature around 25 K reflecting the system of magnetically
     non-interacting ultrasmall particles with a narrow size distribution.
     The in-field (5 T) Mossbauer spectrum recorded at 5 K shows a minimum
     change compared to the zero-field spectrum indicating an absence of the
     long-range magnetic ordering. The composite particles are thermally
     stable up to 150 degrees C, which is confirmed by DSC, TG, and by the
     constant surface area. At higher temperatures, acetate groups are
     removed from the particle surface, which is documented by the increased
     surface area and disappearance of their IR bands. (c) 2007 Elsevier B.V.
     All rights reserved.,
  DOI = 10.1016/j.ultsonch.2007.03.009,
  ISSN = 1350-4177,
  Unique-ID = ISI:000252905500016,
  

• L. Machala, R. Zboril, V. K. Sharma, and Z. Homonnay, "Decomposition of Potassium Ferrate(VI) (K(2)FeO(4)) and Potassium
  Ferrate(III) (KFeO(2)): In-situ Mossbauer Spectroscopy Approach," in MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE 2008, 2008, pp. 114-121.
  [Bibtex]

  @inproceedings ISI:000262290200015,
  Author = Machala, Libor and Zboril, Radek and Sharma, Virender K. and Homonnay,
     Zoltan,
  Editor = Mashlan, M and Zboril, R,
  Title = Decomposition of Potassium Ferrate(VI) (K(2)FeO(4)) and Potassium
     Ferrate(III) (KFeO(2)): In-situ Mossbauer Spectroscopy Approach,
  Booktitle = MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE 2008,
  Series = AIP Conference Proceedings,
  Year = 2008,
  Volume = 1070,
  Pages = 114-121,
  Note = International Conference on Mossbauer Spectroscopy in Materials Science,
     Hlohovec, CZECH REPUBLIC, JUN 16-20, 2008,
  Abstract = Mossbauer spectroscopy was shown to be very useful technique studying
     the mechanism of thermal decomposition or aging processes of the most
     known ferrate(VI), K(2)FeO(4). In-situ Mossbauer spectroscopy approach
     was used to monitor the phase composition during the studied processes.
     The experimental set-up was designed to perform in-situ measurements at
     high temperatures and at different air humid conditions at room
     temperature. The potassium ferrate(III), KFeO(2) was demonstrated to be
     the primary product of thermal decomposition of K(2)FeO(4). The KFeO(2)
     was unstable in a humid air at room temperature and reacted with
     components of air, H(2)O and CO(2) to give Fe(2)O(3) nanoparticles and
     KHCO(3). The aging kinetics of K(2)FeO(4) and KFeO(2) under humid air
     were significantly dependent on the relative air humidity.,
  ISSN = 0094-243X,
  ISBN = 978-0-7354-0601-8,
  Unique-ID = ISI:000262290200015,
  

2007

• H. Bartonkova, M. Mashlan, I. Medrik, D. Jancik, and R. Zboril, "Magnetically modified bentonite as a possible contrast agent in MRI of
  gastrointestinal tract," CHEMICAL PAPERS, vol. 61, iss. 5, pp. 413-416, 2007.
  [Bibtex]

  @article ISI:000248628000014,
  Author = Bartonkova, H. and Mashlan, M. and Medrik, I. and Jancik, D. and Zboril,
     R.,
  Title = Magnetically modified bentonite as a possible contrast agent in MRI of
     gastrointestinal tract,
  Journal = CHEMICAL PAPERS,
  Year = 2007,
  Volume = 61,
  Number = 5,
  Pages = 413-416,
  Month = OCT,
  Abstract = A composite of iron oxide nanoparticles and mineral matrix has been
     studied by XRD, Mossbauer spectroscopy, and TEM. Magnetite and
     superparamagnetic magnetite have been identified by Mossbauer
     spectroscopy in the nanocomposite. A relationship between the hyperfine
     parameters and iron oxide particle size has been confirmed by TEM. The
     optimal concentration of ``magnetite-bentonite'' composite, when the
     MRI signal is fully reduced, was found for using this composite as a
     negative contrast agent.,
  DOI = 10.2478/s11696-007-0057-9,
  ISSN = 0366-6352,
  Unique-ID = ISI:000248628000014,
  

• M. Hermanek, R. Zboril, N. Medrik, J. Pechousek, and C. Gregor, "Catalytic efficiency of iron(III) oxides in decomposition of hydrogen
  peroxide: Competition between the surface area and crystallinity of
  nanoparticles," JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 129, iss. 35, pp. 10929-10936, 2007.
  [Bibtex]

  @article ISI:000249208300060,
  Author = Hermanek, Martin and Zboril, Radek and Medrik, No and Pechousek, Jiri
     and Gregor, Cenek,
  Title = Catalytic efficiency of iron(III) oxides in decomposition of hydrogen
     peroxide: Competition between the surface area and crystallinity of
     nanoparticles,
  Journal = JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,
  Year = 2007,
  Volume = 129,
  Number = 35,
  Pages = 10929-10936,
  Month = SEP 5,
  Abstract = Various iron(III) oxide catalysts were prepared by controlled
     decomposition of a narrow layer (ca. 1 mm) of iron(II) oxalate
     dihydrate, FeC2O4 center dot 2H(2)O, in air at the minimum conversion
     temperature of 175 degrees C. This thermally induced solid-state process
     allows for simple synthesis of amorphous Fe2O3 nanoparticles and their
     controlled one-step crystallization to hematite (alpha-Fe2O3). Thus,
     nanopowders differing in surface area and particle crystallinity can be
     produced depending on the reaction time. The phase composition of
     iron(III) oxides was monitored by XRD and Fe-57 Mossbauer spectroscopy
     including in-field measurements, providing information on the relative
     contents of amorphous and crystalline phases. The gradual changes in
     particle size and surface area accompanying crystallization were
     evaluated by HRTEM and BET analysis, respectively. The catalytic
     efficiency of the synthesized nanoparticles was tested by tracking the
     decomposition of hydrogen peroxide. The obtained kinetic data gave an
     unconventional nonmonotone dependence of the rate constant on the
     surface area of the samples. The amorphous nanopowder with the largest
     surface area of 401 m(2) g(-1) revealed the lowest catalytic efficiency,
     while the highest efficiency was achieved with the sample having a
     significantly lower surface area, 337 m(2) g(-1), exhibiting a
     prevailing content of crystalline alpha-Fe2O3 phase. The obtained rate
     constant, 26.4 x 10(-3) min(-1) (g/L)(-1), is currently the highest
     value published. The observed rare catalytic phenomenon, where the
     particle crystallinity prevails over the surface area effects, is
     discussed with respect to other processes of heterogeneous catalysis.,
  DOI = 10.1021/ja072918x,
  ISSN = 0002-7863,
  Unique-ID = ISI:000249208300060,
  

• A. B. Bourlinos, V. Georgakilas, R. Zboril, and P. DallaS, "Preparation of a water-dispersible carbon nanotube-silica hybrid," CARBON, vol. 45, iss. 10, pp. 2136-2139, 2007.
  [Bibtex]

  @article ISI:000249540500031,
  Author = Bourlinos, A. B. and Georgakilas, V. and Zboril, R. and DallaS, P.,
  Title = Preparation of a water-dispersible carbon nanotube-silica hybrid,
  Journal = CARBON,
  Year = 2007,
  Volume = 45,
  Number = 10,
  Pages = 2136-2139,
  Month = SEP,
  DOI = 10.1016/j.carbon.2007.05.021,
  ISSN = 0008-6223,
  Unique-ID = ISI:000249540500031,
  

• Y. Jiraskova, M. Marysko, and R. Zboril, "Magnetic and structural features of amorphous FeMo-based alloys," JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 316, iss. 2, pp. E16-E19, 2007.
  [Bibtex]

  @article ISI:000248150000103,
  Author = Jiraskova, Yvonna and Marysko, Miroslav and Zboril, Radek,
  Title = Magnetic and structural features of amorphous FeMo-based alloys,
  Journal = JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,
  Year = 2007,
  Volume = 316,
  Number = 2,
  Pages = E16-E19,
  Month = SEP,
  Note = Joint European Magnetic Symposia (JEMS 06), San Sebastian, SPAIN, JUN
     26-29, 2006,
  Organization = Natl Advisory Comm,
  Abstract = NANOPERM-type FeMoCuB alloys are studied using magnetic and Mossbauer
     measurements in the as-prepared amorphous state. It is shown that the
     Fe76Mo8Cu1B15 (A) and Fe74Mo8Cu1B17 (B) alloys exhibit the magnetic
     dipole and electrical quadrupole interactions well detected in the
     room-temperature Mossbauer spectra. The thermomagnetic measurements
     above the room temperature indicate a vanishing of the magnetic
     interactions at approximately 310 K (A) and at 340 K (B), respectively.
     The low-temperature DC magnetic measurements show an anomaly around 200
     K which is also a boundary at which zero-field Mossbauer measurements of
     both samples reflect the gradual ``vanishing'' of the electrical
     quadrupole interactions and appearance of another magnetically ordered
     component. The Mossbauer measurements in the field of 4 MA/m yield a
     survival of quadrupole and an enhancement of magnetic dipole
     interactions. (c) 2007 Elsevier B.V. All rights reserved.,
  DOI = 10.1016/j.jmmm.2007.02.012,
  ISSN = 0304-8853,
  Unique-ID = ISI:000248150000103,
  

• J. Hrbac, V. Halouzka, R. Zboril, K. Papadopoulos, and T. Triantis, "Carbon electrodes modified by nanoscopic iron(III) oxides to assemble
  chemical sensors for the hydrogen peroxide amperometric detection," ELECTROANALYSIS, vol. 19, iss. 17, pp. 1850-1854, 2007.
  [Bibtex]

  @article ISI:000249294800015,
  Author = Hrbac, Jan and Halouzka, Vladimir and Zboril, Radek and Papadopoulos,
     Kyriakos and Triantis, Theodor,
  Title = Carbon electrodes modified by nanoscopic iron(III) oxides to assemble
     chemical sensors for the hydrogen peroxide amperometric detection,
  Journal = ELECTROANALYSIS,
  Year = 2007,
  Volume = 19,
  Number = 17,
  Pages = 1850-1854,
  Month = SEP,
  Abstract = In this study we show that nanoparticles of various ferric oxides
     (hematite, maghemitc, amorphous Fe2O3, beta-Fe2O3 and ferrihydrite)
     incorporated into carbon paste exhibit electro-catalytic properties
     towards hydrogen peroxide reduction. The modified paste electrode
     performances were evaluated and compared with those obtained with
     Prussian Blue-modified carbon paste electrode, which represents an
     excellent chemical mediator towards the H2O redox reaction (as widely
     described in literature). The best catalytic activity was found for
     carbon paste modified by amorphous ferric oxide with 2 - 4 nm particle
     size, which was further tested for possible application as hydrogen
     peroxide sensor. At pH 7, the limit of detection was 2 x 10(-5) M H2O2
     (S/N = 3), the calibration curves were linear upto 8.5 mM H2O2 (R-2=
     0.998), the measurement reproducibility (RSD = 97\%, n = 4), the
     interelectrode reproducibility (RSD = 16\%, n(electrodes) = 5) and < 3 s
     response time.,
  DOI = 10.1002/elan.200703938,
  ISSN = 1040-0397,
  Unique-ID = ISI:000249294800015,
  

• K. Nomura, R. Zboril, J. Tucek, W. Kosaka, S. Ohkoshi, and I. Felner, "Substitution effects of barium and calcium on magnetic properties of
  A(x)Sr(1-x)(Fe(0.5)Ru(0.5))O(3) double perovskites (x=0.05, A=Ba,Ca)," JOURNAL OF APPLIED PHYSICS, vol. 102, iss. 1, 2007.
  [Bibtex]

  @article ISI:000248018300065,
  Author = Nomura, K. and Zboril, R. and Tucek, J. and Kosaka, W. and Ohkoshi, S.
     and Felner, I.,
  Title = Substitution effects of barium and calcium on magnetic properties of
     A(x)Sr(1-x)(Fe(0.5)Ru(0.5))O(3) double perovskites (x=0.05, A=Ba,Ca),
  Journal = JOURNAL OF APPLIED PHYSICS,
  Year = 2007,
  Volume = 102,
  Number = 1,
  Month = JUL 1,
  Abstract = A(x)Sr(1-x)(Fe(0.5)Ru(0.5))O(3) double perovskites (x=0.05 and A=Ba,Ca)
     were prepared by a sol-gel method and an effect of the cation
     substitution at the A site of the crystal structure of
     SrFe(0.5)Ru(0.5)O(3) on their magnetic properties was monitored by x-ray
     diffraction (XRD), magnetic measurements, transmission electron
     microscopy (TEM), scanning electron microscopy (SEM), and
     temperature-dependent and in-field (57)Fe Mossbauer spectroscopy. Both
     Ca- and Ba-substituted samples reveal the orthorhombic structure similar
     to the undoped perovskite; however, the cell volume changes with the
     substituting ion radius. TEM and SEM micrographs manifest agglomerated
     nanocrystalline samples with particle sizes of about 20-60, 15-50, and
     40-70 nm for the undoped, Ba-doped, and Ca-doped perovskites,
     respectively. Generally, the magnetic regime of both substituted and
     undoped perovskites can be described by a spin-glass behavior caused by
     a spin frustration. Among other factors, this is manifested by a
     nonsaturation of the hysteresis loops even at a high field of 50 kOe, by
     a low-temperature divergence of the zero-field-cooled and field-cooled
     magnetization curves, and by a cusp in the zero-field-cooled
     magnetization curve. The low-temperature spin-glass state is also
     supported by the in-field Mossbauer spectra, recorded on these systems.
     The isomer shift parameters, extracted from the Mossbauer spectra,
     confirm a high-spin iron(III) state with S=5/2. In contrast to the
     undoped and Ba-doped samples, the narrower distribution of the hyperfine
     magnetic fields, observed in the Ca-doped perovskite can be ascribed to
     the larger particles. Compared to the undoped sample, the field of
     maximum probability is higher in the Ca-substituted perovskite while it
     is reduced in the Ba-doped sample because of the effects of the chemical
     compression and expansion, respectively. In addition, the Ca-doped
     sample exhibits more negative Weiss temperature (Theta=-105 K) than that
     found for the Ba-substituted perovskite (Theta=-49 K), implying that
     doping with Ca at Sr sites of SrFe(0.5)Ru(0.5)O(3) perovskite structure
     provokes strengthening of antiferromagnetic interactions at the expense
     of the other ones. Furthermore, both substituted samples reveal
     significantly reduced coercive fields in the hysteresis loops recorded
     at 5 K, probably as a result of decreasing magnetocrystalline
     anisotropy. This is an indirect evidence of the essential influence of
     the substitution on the crystal growth of the synthesized particles. The
     role of SrRuO(3) and SrFeO(3) compounds, which have been detected in
     magnetic and Mossbauer measurements as admixtures, is discussed. (c)
     2007 American Institute of Physics.,
  DOI = 10.1063/1.2751101,
  Article-Number = 013907,
  ISSN = 0021-8979,
  Unique-ID = ISI:000248018300065,
  

• J. Filip, R. Zboril, O. Schneeweiss, J. Zeman, M. Cernik, P. Kvapil, and M. Otyepka, "Environmental applications of chemically pure natural ferrihydrite," ENVIRONMENTAL SCIENCE & TECHNOLOGY, vol. 41, iss. 12, pp. 4367-4374, 2007.
  [Bibtex]

  @article ISI:000247187600026,
  Author = Filip, Jan and Zboril, Radek and Schneeweiss, Oldrich and Zeman, Josef
     and Cernik, Miroslav and Kvapil, Petr and Otyepka, Michal,
  Title = Environmental applications of chemically pure natural ferrihydrite,
  Journal = ENVIRONMENTAL SCIENCE \& TECHNOLOGY,
  Year = 2007,
  Volume = 41,
  Number = 12,
  Pages = 4367-4374,
  Month = JUN 15,
  Abstract = Fresh precipitates, deposited from seepage waters of complex-ore
     mine-tailing impoundment at Zlate Hory, Czech Republic, were
     characterized by means of X-ray diffraction, transmission electron
     microscopy, low temperature and in-field Mossbauer spectroscopy, and
     Brunauer-Emmett-Teller surface area measurements. The prevailing phases
     (similar to 96 wt \%) found in precipitates are poorly crystalline, 2-6
     nm sized two-line ferrihydrite, forming globular aggregates of about 150
     nm in diameter, rimmed by acicular irregular nanocrystals of goethite.
     These nanocrystalline ferrihydrite-goethite precipitates are of a
     relatively high chemical purity (similar to 3\% SiO2, Zn similar to 1300
     ppm, trace and rare earth elements < 100 ppm) and thus applicable in
     various nanotechnologies. With a surface area of 270 m(2) g(-1),
     precipitate possesses a high catalytic activity in the decomposition of
     hydrogen peroxide, which is comparable with that found for commercially
     accessible FeO(OH) catalyst. Another superior aspect of such natural
     nanoparticles presents a cheap and suitable precursor for a thermally
     induced solid-state synthesis of the stable core-shell alpha-Fe-FeO
     nanoparticles that are well applicable in reductive technologies of
     groundwater treatment. Just the possibility of using the undesirable
     waste contaminating the environment in further environmental
     technologies is the key practical benefit discussed in this paper.,
  DOI = 10.1021/es062312t,
  ISSN = 0013-936X,
  Unique-ID = ISI:000247187600026,
  

• L. Machala, R. Zboril, and A. Gedanken, "Amorphous iron(III) Oxide - A review," JOURNAL OF PHYSICAL CHEMISTRY B, vol. 111, iss. 16, pp. 4003-4018, 2007.
  [Bibtex]

  @article ISI:000245797700002,
  Author = Machala, Libor and Zboril, Radek and Gedanken, Aharon,
  Title = Amorphous iron(III) Oxide - A review,
  Journal = JOURNAL OF PHYSICAL CHEMISTRY B,
  Year = 2007,
  Volume = 111,
  Number = 16,
  Pages = 4003-4018,
  Month = APR 26,
  Abstract = The syntheses of amorphous Fe2O3 nanoparticles of varying size and
     morphology, their magnetic properties, crystallization mechanism, and
     applications are reviewed herein. The synthetic routes are classified
     according to the nature of the sample (powders, nanocomposites, films,
     coated particles). The contributions of various experimental techniques
     to the characterization of an amorphous Fe2O3 phase are considered in
     this review, including some key experimental markers, allowing its
     distinction from nanocrystalline ``X-ray amorphous'' polymorphs
     (maghemite, hematite). We discuss the thermally induced crystallization
     mechanisms depending on transformation temperature, atmosphere, and the
     size of the amorphous particles that predetermine the structure of the
     primarily formed crystalline polymorph. The controversial description of
     the magnetic behavior, including an interpretation of the
     low-temperature and in-field Mossbauer spectra, is analyzed.,
  DOI = 10.1021/jp064992s,
  ISSN = 1520-6106,
  Unique-ID = ISI:000245797700002,
  

• L. Machala, R. Zboril, V. K. Sharma, J. Filip, O. Schneeweiss, and Z. Homonnay, "Mossbauer characterization and in situ monitoring of thermal
  decomposition of potassium ferrate(VI), K(2)FeO(4) in static air
  conditions," JOURNAL OF PHYSICAL CHEMISTRY B, vol. 111, iss. 16, pp. 4280-4286, 2007.
  [Bibtex]

  @article ISI:000245797700035,
  Author = Machala, Libor and Zboril, Radek and Sharma, Virender K. and Filip, Jan
     and Schneeweiss, Oldrich and Homonnay, Zoltan,
  Title = Mossbauer characterization and in situ monitoring of thermal
     decomposition of potassium ferrate(VI), K(2)FeO(4) in static air
     conditions,
  Journal = JOURNAL OF PHYSICAL CHEMISTRY B,
  Year = 2007,
  Volume = 111,
  Number = 16,
  Pages = 4280-4286,
  Month = APR 26,
  Abstract = Solid orthorhombic crystals of potassium ferrate(VI) (K(2)FeO(4)) of a
     high-chemical purity (> 99.0\%) were characterized by low-temperature
     (1.5-5 K), high-temperature (463-863 K), and in-field (1.5 K/3 T)
     Mossbauer spectroscopy. Potassium ferrate(VI) reveals a Neel magnetic
     transition temperature (T(N)) of similar to 3.8 K and a saturation
     hyperfine magnetic field of 13.8 T at 1.5 K. Spectral line intensities
     recorded below T(N) in an external magnetic field of 3 T manifest a
     perfect antiferromagnetic ordering. For the in situ monitoring of the
     thermal behavior of K(2)FeO(4), high-temperature Mossbauer data were
     combined with those obtained from thermogravimetry, differential
     scanning calorimetry, and variable-temperature X-ray diffraction
     measurements. Such in situ approach allowed the identification of the
     reaction products and intermediates and yielded the first experimental
     evidence for the participation of CO(2) in the decomposition process. As
     the primary conversion products, KFeO(2) and two potassium oxides in
     equivalent molar ratio, KO(2) and K(2)O, were suggested. However, the
     KO(2) phase is detectable with difficulty as it reacts very quickly with
     CO(2) from air resulting in the formation of K(2)CO(3). The presented
     decomposition model is consistent with thermogravimetric data giving the
     mass loss of 8.0\%, which corresponds to the participation of (1)/(6)
     mol of CO(2) and liberation of (3)/(4) mol of O(2) per 1 mol of
     K(2)FeO(4) (K(2)FeO(4) + (1)/(6)CO(2) -> KFeO(2) + (1)/(3)K(2)O +
     (1)/(6)K(2)CO(3) + (3)/(4)O(2)). An explanation of the multistage
     reaction mechanism has an important practical impact for the
     optimization of the solid-state synthesis of potassium ferrate(VI).,
  DOI = 10.1021/jp068272x,
  ISSN = 1520-6106,
  Unique-ID = ISI:000245797700035,
  

• A. B. Bourlinos, A. Bakandritsos, R. Zboril, M. Karakassides, and C. Trapalis, "Preparation of a water-dispersible carbon-silica composite derived from
  a silylated molecular precursor," CARBON, vol. 45, iss. 5, pp. 1108-1111, 2007.
  [Bibtex]

  @article ISI:000246609200029,
  Author = Bourlinos, A. B. and Bakandritsos, A. and Zboril, R. and Karakassides,
     M. and Trapalis, C.,
  Title = Preparation of a water-dispersible carbon-silica composite derived from
     a silylated molecular precursor,
  Journal = CARBON,
  Year = 2007,
  Volume = 45,
  Number = 5,
  Pages = 1108-1111,
  Month = APR,
  DOI = 10.1016/j.carbon.2007.02.018,
  ISSN = 0008-6223,
  Unique-ID = ISI:000246609200029,
  

• O. Schneeweiss, B. David, T. Zak, R. Zboril, and M. Mashlan, "Nanocrystalline Fe-Ni and Fe-Co samples prepared by powder processing," JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 310, iss. 2, Part 3, pp. E858-E860, 2007.
  [Bibtex]

  @article ISI:000247720400418,
  Author = Schneeweiss, O. and David, B. and Zak, T. and Zboril, R. and Mashlan, M.,
  Title = Nanocrystalline Fe-Ni and Fe-Co samples prepared by powder processing,
  Journal = JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,
  Year = 2007,
  Volume = 310,
  Number = 2, Part 3,
  Pages = E858-E860,
  Month = MAR,
  Abstract = Preparation and properties of nanocrystalline samples of Ni3Fe and FeCo
     alloys by calcination of mixtures of Fe, Co, and Ni oxalates are
     described. The samples contain according to XRD single Ni3Fe and FeCo
     phases with grain size about 40 and 45 nm, respectively. The parameters
     derived from the Mossbauer spectra confirm the single phase samples. The
     saturation induction values are close to the coarse polycrystals but
     coercive force is importantly higher and permeability lower. The
     magnetic behaviour is explained by the role of interfacial regions in
     the samples. (C) 2006 Elsevier B. V. All rights reserved.,
  DOI = 10.1016/j.mmm.2006.11.018,
  ISSN = 0304-8853,
  Unique-ID = ISI:000247720400418,
  

2006

• M. Mal'arova, Z. Travnicek, R. Zboril, and J. Cernak, "[Co(en)(3)][Fe(CN)(6)] center dot H2O and
  [Co(en)(3)][Fe(CN)(6)]: A dehydration process investigated by single
  crystal X-ray analysis, thermal analysis and Mossbauer spectroscopy," POLYHEDRON, vol. 25, iss. 15, pp. 2935-2943, 2006.
  [Bibtex]

  @article ISI:000241475100016,
  Author = Mal'arova, Miroslava and Travnicek, Zdenek and Zboril, Radek and Cernak,
     Juraj,
  Title = [Co(en)(3)][Fe(CN)(6)] center dot H2O and
     [Co(en)(3)][Fe(CN)(6)]: A dehydration process investigated by single
     crystal X-ray analysis, thermal analysis and Mossbauer spectroscopy,
  Journal = POLYHEDRON,
  Year = 2006,
  Volume = 25,
  Number = 15,
  Pages = 2935-2943,
  Month = NOV 3,
  Abstract = The complexes [Co(en)(3)][Fe(CN)(6)] center dot H2O (1) and
     [Co(en)(3)][Fe(CN)(6)] (2) (en = 1,2-diaminoethane) have been
     prepared and characterized by elemental analysis, single crystal X-ray
     analysis, TG/DSC analyses and Fe-57 Mossbauer spectroscopy. Single
     crystals of 1 have been prepared by recrystallization of compound 1 from
     a water solution, while crystals of complex 2 have been synthesized in
     the solid state by dynamic heating of 1 up to 150 degrees C. Both
     complexes exhibit ionic structures built up of [Co(en)(3)](3+) cations
     and [Fe(CN)(6)](3-) anions. The presence and/or absence of the crystal
     water molecule in the complexes has a strong influence on their thermal
     stability, the extent of hydrogen bonding in the crystal structures and
     on the symmetry of the iron(III) environments in the [Fe(CN)(6)](3-)
     anions, as determined by Fe-57 Mossbauer spectroscopy. (C) 2006 Elsevier
     Ltd. All rights reserved.,
  DOI = 10.1016/j.poly.2006.04.021,
  ISSN = 0277-5387,
  Unique-ID = ISI:000241475100016,
  

• K. Barcova, M. Mashlan, R. Zboril, J. Filip, J. Podjuklova, K. Hrabovska, and P. Schaaf, "Phase composition of steel-enamel interfaces: Effects of chemical
  pre-treatment," SURFACE & COATINGS TECHNOLOGY, vol. 201, iss. 3-4, pp. 1836-1844, 2006.
  [Bibtex]

  @article ISI:000244477300181,
  Author = Barcova, K. and Mashlan, M. and Zboril, R. and Filip, J. and Podjuklova,
     J. and Hrabovska, K. and Schaaf, P.,
  Title = Phase composition of steel-enamel interfaces: Effects of chemical
     pre-treatment,
  Journal = SURFACE \& COATINGS TECHNOLOGY,
  Year = 2006,
  Volume = 201,
  Number = 3-4,
  Pages = 1836-1844,
  Month = OCT 5,
  Abstract = Mossbauer spectroscopy in transmission geometry, performed
     simultaneously with conversion X-ray, and conversion electron Mossbauer
     spectroscopy, X-ray powder diffraction and electron microprobe analysis
     (EMPA), have been used to monitor the effects of a chemical pretreatment
     on the phase composition of a ``steel-enamel interface'' of a
     hot-rolled steel surface formed during a thermally induced coating
     process. In this comparative study, we have analysed both an untreated
     sample and a treated sample of a steel sheet with the surface pickled by
     dilute H2SO4 and passivated in Na2CO3 solution. A continuous magnetite
     layer covering the steel surface as a result of the chemical
     pre-treatment was identified by backscattering Mossbauer spectroscopy
     and EMPA. During a fusion process, well crystalline fayalite (Fe2SiO4)
     is formed at the phase boundary by the solid-state reaction of magnetite
     with the SiO2-based enamel matrix. Wustite (FeO) was detected as a
     product of oxidation of iron under the magnetite layer of the chemically
     pre-treated sample, whereas hematite represents a product of oxidation
     of magnetite. This wustite-magnetite-(hematite)-fayalite layered
     interface is rimmed by isometric metallic intricate network-forming
     particles with a composition of about Fe0.95Ni0.05 and which are related
     to a diffusion-reduction process of iron and/or to a reduction of Fe3+
     in glass. In the case of chemically untreated steel, EMPA revealed a
     sharp phase boundary, rimmed again by Fe-based metallic particles.
     Magnetite covered by fayalite was occasionally observed in a few areas
     of the phase boundary. The presence of magnetite at the interface of the
     chemically untreated sample is due to a thermally induced air-oxidation
     of the alpha-Fe steel surface during an enamelling procedure. The
     surprising effect of the chemical pre-treatment, resulting in a lowering
     of adhesion of enamel on the steel surface, is discussed. (c) 2006
     Elsevier B.V. All rights reserved.,
  DOI = 10.1016/j.surfcoat.2006.03.015,
  ISSN = 0257-8972,
  Unique-ID = ISI:000244477300181,
  

• L. Machala, R. Zboril, V. K. Sharma, J. Filip, and O. Schneeweiss, "New view on thermal behavior of K(2)FeO(4) in static air," ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, vol. 232, pp. 42-ENVR, 2006.
  [Bibtex]

  @article ISI:000207781604643,
  Author = Machala, Libor and Zboril, Radek and Sharma, Virender K. and Filip, Jan
     and Schneeweiss, Oldrich,
  Title = New view on thermal behavior of K(2)FeO(4) in static air,
  Journal = ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY,
  Year = 2006,
  Volume = 232,
  Pages = 42-ENVR,
  Month = SEP 10,
  ISSN = 0065-7727,
  Unique-ID = ISI:000207781604643,
  

• B. David, R. Zboril, M. Mashlan, T. Grygar, F. Dumitrache, and O. Schneeweiss, "Single ferromagnetic behaviour of nanopowders with Fe(3)C," JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 304, iss. 2, pp. E787-E789, 2006.
  [Bibtex]

  @article ISI:000207211800099,
  Author = David, B. and Zboril, R. and Mashlan, M. and Grygar, T. and Dumitrache,
     F. and Schneeweiss, O.,
  Title = Single ferromagnetic behaviour of nanopowders with Fe(3)C,
  Journal = JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,
  Year = 2006,
  Volume = 304,
  Number = 2,
  Pages = E787-E789,
  Month = SEP,
  Abstract = The magnetic properties of Fe(3)C nanopowders prepared by laser
     pyrolysis (Sample A) and reduction and carburization of a
     nanocrystalline iron oxide (Sample B) are investigated. Fe(3)C was
     recognized as the solely ferromagnetic phase with the crystallite mean
     size 20 and 12 nm for the Sample A and B, respectively. The nanopowders
     exhibit ferromagnetic behavior with a blurred transition to paramagnetic
     state nearby the Curie temperature of coarse grained Fe(3)C. This effect
     is explained by a grain size distribution and the influence of the
     surface/interface regions of the nanoparticles. (C) 2006 Elsevier B. V.
     All rights reserved.,
  DOI = 10.1016/j.jmmm.2006.02.224,
  ISSN = 0304-8853,
  Unique-ID = ISI:000207211800099,
  

• A. Panacek, L. Kvitek, R. Prucek, M. Kolar, R. Vecerova, N. Pizurova, V. K. Sharma, T. Nevecna, and R. Zboril, "Silver colloid nanoparticles: Synthesis, characterization, and their
  antibacterial activity," JOURNAL OF PHYSICAL CHEMISTRY B, vol. 110, iss. 33, pp. 16248-16253, 2006.
  [Bibtex]

  @article ISI:000239818000019,
  Author = Panacek, Ales and Kvitek, Libor and Prucek, Robert and Kolar, Milan and
     Vecerova, Renata and Pizurova, Nadezda and Sharma, Virender K. and
     Nevecna, Tat'jana and Zboril, Radek,
  Title = Silver colloid nanoparticles: Synthesis, characterization, and their
     antibacterial activity,
  Journal = JOURNAL OF PHYSICAL CHEMISTRY B,
  Year = 2006,
  Volume = 110,
  Number = 33,
  Pages = 16248-16253,
  Month = AUG 24,
  Abstract = A one-step simple synthesis of silver colloid nanoparticles with
     controllable sizes is presented. In this synthesis, reduction of
     [Ag(NH3)(2)](+) complex cation by four saccharides was performed. Four
     saccharides were used: two monosaccharides (glucose and galactose) and
     two disaccharides (maltose and lactose). The syntheses performed at
     various ammonia concentrations (0.005-0.20 mol L-1) and pH conditions
     (11.5-13.0) produced a wide range of particle sizes (25-450 nm) with
     narrow size distributions, especially at the lowest ammonia
     concentrations. The average size, size distribution, morphology, and
     structure of particles were determined by dynamic light scattering
     (DLS), transmission electron microscopy (TEM), and UV/Visible absorption
     spectrophotometry. The influence of the saccharide structure
     (monosacharides versus disaccharides) on the size of silver particles is
     briefly discussed. The reduction of [Ag(NH3)(2)](+) by maltose
     produced silver particles with a narrow size distribution with an
     average size of 25 nm, which showed high antimicrobial and bactericidal
     activity against Gram-positive and Gram-negative bacteria, including
     highly multiresistant strains such as methicillin-resistant
     Staphylococcus aureus. Antibacterial activity of silver nanoparticles
     was found to be dependent on the size of silver particles. A very low
     concentration of silver (as low as 1.69 mu g/mL Ag) gave antibacterial
     performance.,
  DOI = 10.1021/jp063826h,
  ISSN = 1520-6106,
  Unique-ID = ISI:000239818000019,
  

• J. Madarasz, R. Zboril, Z. Homonnay, V. K. Sharma, and G. Pokol, "Thermal decomposition of iron(VI) oxides, K(2)FeO(4) and BaFeO(4), in an
  inert atmosphere," JOURNAL OF SOLID STATE CHEMISTRY, vol. 179, iss. 5, pp. 1426-1433, 2006.
  [Bibtex]

  @article ISI:000237528900022,
  Author = Madarasz, Janos and Zboril, Radek and Homonnay, Zoltan and Sharma,
     Virender K. and Pokol, Gyorgy,
  Title = Thermal decomposition of iron(VI) oxides, K(2)FeO(4) and BaFeO(4), in an
     inert atmosphere,
  Journal = JOURNAL OF SOLID STATE CHEMISTRY,
  Year = 2006,
  Volume = 179,
  Number = 5,
  Pages = 1426-1433,
  Month = MAY,
  Abstract = The thermal decomposition of solid samples of iron(VI) oxides,
     K(2)FeO(4) center dot 0.088 H(2)O (1) and BaFeO(4) center dot 0.25H(2)O
     (2) in inert atmosphere has been examined using simultaneous
     thermogravimetry and differential thermal analysis (TG/DTA), in
     combination with ill situ analysis of the evolved gases by Online
     Coupled mass spectrometer (EGA-MS). The final decomposition products
     were characterized by (57)Fe Mossbauer spectroscopy. Water molecules
     were released first, followed by a distinct decomposition step with
     endothermic DTA peak of 1 and 2 at 273 and 248 degrees C. respectively,
     corresponding to the evolution of molecular oxygen as confirmed by
     EGA-MS. The released amounts of O(2) were determined as 0.42 and 0.52
     mol pro formula of 1 and 2, respectively. The decomposition product of
     K(2)FeO(4) at 250 degrees C was determined as Fe(III) species in the
     form of KFeO(2). Formation of an amorphous mixture of superoxide,
     peroxide, and oxide of potassium may be other products of the thermal
     conversion of iron(VI) oxide I to account for less than expected
     released oxygen. The thermogravimetric and Mossbauer data suggest that
     barium iron perovskite with the intermediate valence state of iron
     (between III and IV) was the product of thermal decomposition of
     iron(VI) oxide 2. (C) 2006 Elsevier Inc. All rights reserved.,
  DOI = 10.1016/j.jssc.2006.01.054,
  ISSN = 0022-4596,
  Unique-ID = ISI:000237528900022,
  

• J. Tucek, R. Zboril, and D. Petridis, "Maghemite nanoparticles by view of Mossbauer spectroscopy," JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, vol. 6, iss. 4, pp. 926-947, 2006.
  [Bibtex]

  @article ISI:000237069200004,
  Author = Tucek, J and Zboril, R and Petridis, D,
  Title = Maghemite nanoparticles by view of Mossbauer spectroscopy,
  Journal = JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,
  Year = 2006,
  Volume = 6,
  Number = 4,
  Pages = 926-947,
  Month = APR,
  Abstract = A (57)Fe Mossbauer spectrometry applied in a broad range of temperatures
     and external magnetic fields is presented as a powerful investigating
     tool for the structural and magnetic characterization of maghemite
     (gamma-Fe(2)O(3)) nanoparticles, which presently constitute a modern
     advanced material used in various fields of scientific, technological,
     and biomedical interest. Reflections of structural and magnetic
     properties in the hyperfine parameters of Mossbauer spectra of
     nanomaghemite samples prepared by different routes with varying particle
     size distribution, particle morphology, and degree of interparticle
     interactions (isolated nanoparticles, powders, nanocomposites, films)
     are reviewed. Some crucial points concerning the description of the
     magnetic regime of strongly interacting maghemite nanoparticles are also
     briefly discussed with respect to their Mossbauer spectra.,
  DOI = 10.1166/jnn.2006.183,
  ISSN = 1533-4880,
  Unique-ID = ISI:000237069200004,
  

• K. Barcova, R. Zboril, M. Mashlan, Y. Jiraskova, J. Filip, J. Lunacek, and K. Hrabovska, "Influence of enamel ageing on mechanical properties and phase
  composition of the steel-enamel system," SURFACE AND INTERFACE ANALYSIS, vol. 38, iss. 4, pp. 413-416, 2006.
  [Bibtex]

  @article ISI:000237437100059,
  Author = Barcova, K and Zboril, R and Mashlan, M and Jiraskova, Y and Filip, J
     and Lunacek, J and Hrabovska, K,
  Title = Influence of enamel ageing on mechanical properties and phase
     composition of the steel-enamel system,
  Journal = SURFACE AND INTERFACE ANALYSIS,
  Year = 2006,
  Volume = 38,
  Number = 4,
  Pages = 413-416,
  Month = APR,
  Note = 11th European Conference on Applications of Surface and Interface
     Analysis, Vienna, AUSTRIA, SEP 25-30, 2005,
  Abstract = An effect of the enamel ageing on the mechanical properties and
     composition of the steel-enamel system was monitored by means of
     conversion electron and transmission Mossbauer spectroscopy,
     electron-microprobe analysis, thermogravimetry and microhardness
     measurement. Two enamels differing in the time delay between their
     preparation and application on the steel surface (1 day vs 30 days) were
     used for this comparative study. After the enamelling procedure, the
     qualitative phase composition of both samples is similar, including
     alpha-Fe, FeO, Fe(3)O(4), alpha-Fe(2)O(3), Fe(2)SiO(4) and the Fe-Ni
     particles. Despite this similar qualitative phase composition of
     differently aged enamels, the mechanical properties of the samples are
     significantly different. Copyright (C) 2006 John Wiley \& Sons, Ltd.,
  DOI = 10.1002/sia.2288,
  ISSN = 0142-2421,
  Unique-ID = ISI:000237437100059,
  

• O. Schneeweiss, R. Zboril, N. Pizurova, M. Mashlan, E. Petrovsky, and J. Tucek, "Novel solid-state synthesis of alpha-Fe and Fe(3)O(4) nanoparticles
  embedded in a MgO matrix," NANOTECHNOLOGY, vol. 17, iss. 2, pp. 607-616, 2006.
  [Bibtex]

  @article ISI:000235221800045,
  Author = Schneeweiss, O and Zboril, R and Pizurova, N and Mashlan, M and
     Petrovsky, E and Tucek, J,
  Title = Novel solid-state synthesis of alpha-Fe and Fe(3)O(4) nanoparticles
     embedded in a MgO matrix,
  Journal = NANOTECHNOLOGY,
  Year = 2006,
  Volume = 17,
  Number = 2,
  Pages = 607-616,
  Month = JAN 28,
  Abstract = Thermally induced reduction of amorphous Fe(2)O(3) nanopowder (2-3 nm)
     with nanocrystalline Mg (similar to 20 nm) under a hydrogen atmosphere
     is presented as a novel route to obtain alpha-Fe and Fe(3)O(4) magnetic
     nanoparticles dispersed in a MgO matrix. The phase composition,
     structural and magnetic properties, size and morphology of the
     nanoparticles were monitored by x-ray diffraction, (57)Fe Mossbauer
     spectroscopy at temperatures of 24-300 K, transmission electron
     microscopy and magnetic measurements. Spherical magnetite nanoparticles
     prepared at a reaction temperature of 300 degrees C revealed a
     well-defined structure, with a ratio of tetrahedral to octahedral Fe
     sites of 1/2 being common for the bulk material. A narrow particle size
     distribution (20-30 nm) and high saturation magnetization (95 +/- 5 A
     m(2) kg(-1)) predispose the magnetite nanoparticles to various
     applications, including magnetic separation processes. The Verwey
     transition of Fe(3)O(4) nanocrystals was found to be decreased to about
     80 K. The deeper reduction of amorphous ferric oxide at 600 degrees C
     allows alpha-Fe (40-50 nm) nanoparticles to be synthesized with a
     coercive force of about 30 mT. They have a saturation magnetization 2.2
     times higher than that of synthesized magnetite nanoparticles, which
     corresponds well with the ratio usually found for the pure bulk phases.
     The magnetic properties of alpha-Fe nanocrystals combined with the high
     chemical and thermal stability of the MgO matrix makes the prepared
     nanocomposite useful for various magnetic applications.,
  DOI = 10.1088/0957-4484/17/2/044,
  ISSN = 0957-4484,
  Unique-ID = ISI:000235221800045,
  

• J. Filip, M. Novak, A. Beran, and R. Zboril, "Crystal chemistry and OH defect concentrations in spodumene from
  different granitic pegmatites," PHYSICS AND CHEMISTRY OF MINERALS, vol. 32, iss. 10, pp. 733-746, 2006.
  [Bibtex]

  @article ISI:000234687100009,
  Author = Filip, J and Novak, M and Beran, A and Zboril, R,
  Title = Crystal chemistry and OH defect concentrations in spodumene from
     different granitic pegmatites,
  Journal = PHYSICS AND CHEMISTRY OF MINERALS,
  Year = 2006,
  Volume = 32,
  Number = 10,
  Pages = 733-746,
  Month = JAN,
  Abstract = Thirty spodumene samples of distinct paragenetic types ( primary
     magmatic, secondary after petalite and hydrothermal) from variety of
     granitic pegmatites were characterized by electron microprobe, polarized
     FTIR spectroscopy and Mossbauer spectroscopy. The FTIR spectra of OH (
     weak sharp pleochroic bands at 3,425, 3,410, 3,395 cm(-1) and in the
     3,500 - 3,470 spectral region) are strongly polarized with maximum
     absorption parallel to n(gamma). The majority of OH dipoles are
     presumably generated by a partial replacement of O2 oxygen atoms with an
     orientation pointing above the Li vacancy site. The separation of the
     bands probably resulted from a replacement of the coordinating Al by Fe
     and Si by Al. Homogeneous spodumene mostly close to its ideal formula
     LiAlSi(2)O(6) shows Fe (0.00 - 0.10 apfu as Fe(3+); Fe(3+) >> Fe(2+))
     and Na (0.00 - 0.04 apfu) as the only minor cations and Fe(3+) Al(-1)
     substitution up to 10 mol\% of the LiFe(3+) Si(2)O(6) component.
     Hydrogen concentrations (from 0.1 up to < 5 ppm H(2)O by weight) vary as
     a function of genetic type with the highest amounts in high-temperature
     magmatic spodumene. Differences among particular genetic types of
     spodumene are related to maximum solubility of OH in spodumene structure
     at given P - T conditions and at actual chemical composition of
     spodumene. OH defect concentrations in spodumene follow a trend, LT/LP
     pyroxenes containing lower hydrogen contents compared to HT/HP ones. The
     hydrogen contents in particular genetic types of spodumene and their
     decrease with decreasing T and P are consistent with petrologic models
     of the pegmatite ( sub) types formations.,
  DOI = 10.1007/s00269-005-0051-0,
  ISSN = 0342-1791,
  Unique-ID = ISI:000234687100009,
  

• M. Mashlan, A. Kholmetskii, V. Yevdokimov, H. Pechousek, O. Verich, R. Zboril, and R. Tsonchev, "Mossbauer spectrometer with resonant detector," NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM
  INTERACTIONS WITH MATERIALS AND ATOMS, vol. 243, iss. 1, pp. 241-246, 2006.
  [Bibtex]

  @article ISI:000234658800040,
  Author = Mashlan, M and Kholmetskii, A and Yevdokimov, V and Pechousek, H and
     Verich, O and Zboril, R and Tsonchev, R,
  Title = Mossbauer spectrometer with resonant detector,
  Journal = NUCLEAR INSTRUMENTS \& METHODS IN PHYSICS RESEARCH SECTION B-BEAM
     INTERACTIONS WITH MATERIALS AND ATOMS,
  Year = 2006,
  Volume = 243,
  Number = 1,
  Pages = 241-246,
  Month = JAN,
  Abstract = A Mossbauer spectrometer with a collective synchronous motion of the
     radioactive source and resonant detector has been built. The new special
     transducer with four drive coils and one velocity pickup coil has been
     developed. The drive coils are distributed over a perimeter of the
     moving frame, which connects the source and resonant detector. This
     configuration ensures an effective suppression of any mechanical
     vibrations and excitations in the moving frame. The polyamide fibers
     serve as suspension brackets, barium ferrite magnets are used. The
     mechanical construction of the transducer allows the use of various
     cryostats and furnaces, because the sample is immovable. The
     spectrometer developed provides an effective application of resonant
     detectors in a wide range of absorber temperatures. (c) 2005 Elsevier
     B.V. All rights reserved.,
  DOI = 10.1016/j.nimb.2005.07.208,
  ISSN = 0168-583X,
  Unique-ID = ISI:000234658800040,
  

• M. Miglierini, T. Kanuch, P. Svec, T. Krenicky, M. Vujtek, and R. Zboril, "Magnetic microstructure of NANOPERM-type nanocrystalline alloys," PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, vol. 243, iss. 1, pp. 57-64, 2006.
  [Bibtex]

  @article ISI:000234925800010,
  Author = Miglierini, M and Kanuch, T and Svec, P and Krenicky, T and Vujtek, M
     and Zboril, R,
  Title = Magnetic microstructure of NANOPERM-type nanocrystalline alloys,
  Journal = PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS,
  Year = 2006,
  Volume = 243,
  Number = 1,
  Pages = 57-64,
  Month = JAN,
  Note = European Conference on Physics of Magnetism (PM 05), Poznan, POLAND, JUN
     24-27, 2005,
  Abstract = Controlled crystallization of amorphous NANOPERM-type Fe76Mo8Cu1B15
     alloy leads to the formation of crystalline grains of about 10 nm in
     size. The evolution of crystallization and its impact on the resulting
     magnetic properties is followed by nuclear and atomic based techniques
     of (subatomic) structural characterization comprising Mossbauer
     spectrometry, X-ray diffraction, transmission electron microscopy, high
     resolution transmission electron microscopy, differential scanning
     calorimetry, and atomic force microscopy. The amount of nanocrystalline
     grains identified as bcc-Fe rises with temperature of annealing and
     influences magnetic states of the original amorphous precursor. Results
     of structural characterization are correlated with magnetic data
     obtained from macroscopic measurements. In the samples with low contents
     of nanocrystallites, a deterioration of soft magnetic properties is
     observed. A very good soft magnetic behaviour is regained, however,
     towards the end of the primary crystallization process. (c) 2006
     WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.,
  DOI = 10.1002/pssb.200562446,
  ISSN = 0370-1972,
  Unique-ID = ISI:000234925800010,
  

• M. Hermanek, R. Zboril, M. Mashlan, L. Machala, and O. Schneeweiss, "Thermal behaviour of iron(II) oxalate dihydrate in the atmosphere of its
  conversion gases," JOURNAL OF MATERIALS CHEMISTRY, vol. 16, iss. 13, pp. 1273-1280, 2006.
  [Bibtex]

  @article ISI:000236115100009,
  Author = Hermanek, M and Zboril, R and Mashlan, M and Machala, L and Schneeweiss,
     O,
  Title = Thermal behaviour of iron(II) oxalate dihydrate in the atmosphere of its
     conversion gases,
  Journal = JOURNAL OF MATERIALS CHEMISTRY,
  Year = 2006,
  Volume = 16,
  Number = 13,
  Pages = 1273-1280,
  Abstract = Using a device for thermogravimetric analysis, a dynamic study of
     thermally induced solid-state transformations of FeC(2)O(4)(.)2H(2)O in
     the atmosphere allowing full participation of gaseous products (CO, CO2,
     H2O) in the reaction system was carried out. Solid phases formed at
     various temperatures between 25 and 640 degrees C were identified and
     characterized using Fe-57 Mossbauer spectroscopy, TG and XRD. Up to 230
     degrees C, evolution of two molecules of the water of crystallization
     takes place. Superparamagnetic nanoparticles of magnetite (Fe3O4) are
     formed as the primary product of the decomposition of FeC2O4, together
     with gaseous CO and CO2. In the next stage above 380 degrees C, the
     crystallization of magnetite is accompanied by a reduction of the
     remaining ferrous oxalate to iron carbide (Fe3C) by carbon monoxide.
     Thermally induced conversion of iron carbide into alpha-Fe and carbon is
     expected between 400 and 535 degrees C as the major chemical process. In
     the last reaction step, above 535 degrees C, magnetite is reduced to
     wustite (FeO) by carbon monoxide evolved at lower temperatures. On the
     grounds of quantitative Mossbauer data possible competitive reactions
     are discussed and a temperature dependent reaction model is suggested.,
  DOI = 10.1039/b514565a,
  ISSN = 0959-9428,
  Unique-ID = ISI:000236115100009,
  

• O. Schneeweiss, R. Zboril, N. Pizurova, and M. Mashlan, "Preparation and properties of iron and iron oxide nanocrystals in MgO
  matrix," HYPERFINE INTERACTIONS, vol. 164, iss. 1-4, pp. 35-40, 2006.
  [Bibtex]

  @article ISI:000239364000005,
  Author = Schneeweiss, O. and Zboril, R. and Pizurova, N. and Mashlan, M.,
  Title = Preparation and properties of iron and iron oxide nanocrystals in MgO
     matrix,
  Journal = HYPERFINE INTERACTIONS,
  Year = 2006,
  Volume = 164,
  Number = 1-4,
  Pages = 35-40,
  Month = JUL,
  Note = 8th International Conference on Solid State Physics/Workshop Mossbauer
     Spectroscopy of Locally Heterogeneous Systems, Almaty, KAZAKHSTAN, AUG
     23-26, 2004,
  Abstract = We have prepared alpha-iron and magnetite (Fe3O4) nanoparticles in MgO
     matrix from a mixture of nanocrystalline Fe2O3 with Mg(H,O) powders
     calcinated in hydrogen. This procedure yielded spherical magnetic
     nanoparticles embedded in MgO. Transmission electron microscopy and
     Mossbauer spectroscopy were used for structure and phase analysis. The
     measurements of magnetic properties showed increased coercivity of the
     nanocomposite samples.,
  DOI = 10.1007/s10751-006-9232-6,
  ISSN = 0304-3843,
  Unique-ID = ISI:000239364000005,
  

2005

• D. Jancik, M. Mashlan, R. Zboril, J. Adetunji, and K. Nomura, "A new fast type of Mossbauer spectrometer for the rapid determination of
  iron-bearing minerals used in the paint industry," CZECHOSLOVAK JOURNAL OF PHYSICS, vol. 55, iss. 7, pp. 803-811, 2005.
  [Bibtex]

  @article ISI:000231635800005,
  Author = Jancik, D and Mashlan, M and Zboril, R and Adetunji, J and Nomura, K,
  Title = A new fast type of Mossbauer spectrometer for the rapid determination of
     iron-bearing minerals used in the paint industry,
  Journal = CZECHOSLOVAK JOURNAL OF PHYSICS,
  Year = 2005,
  Volume = 55,
  Number = 7,
  Pages = 803-811,
  Month = JUL,
  Note = International Colloquium on Mossbauer Spectroscopy in Materials Science,
     Vsemina, CZECH REPUBLIC, JUN 01-04, 2004,
  Abstract = A new miniaturised Mossbauer spectrometer has been developed for
     laboratory and industrial application. Equipped with a YAlO(3):Ce
     crystal fast scintillation detector unit and mini transducer for the
     energy modulation of gamma rays, the unique mechanical design enhances
     protection from radiation and prevents disturbance by mechanical
     vibrations. It can be used with various types of cryostat and furnace.
     Supported by the LabVIEW graphical programming environment and by the
     new algorithm for the quantification of iron-components, the
     spectrometer can be used as a single-purpose instrument for the rapid
     determination of the Fe(2+)/Fe(3+) ratio in ilmenite and Morin
     transition temperature of hematite. It can also be used to monitor the
     manufacturing processes for titanium white and copperas red.,
  DOI = 10.1007/s10582-005-0082-2,
  ISSN = 0011-4626,
  Unique-ID = ISI:000231635800005,
  

• J. Tucek and R. Zboril, "Zero-field and in-field Mossbauer spectroscopy as a tool for structural
  and magnetic characterization of maghemite (gamma-Fe(2)O(3))
  nanoparticles," CZECHOSLOVAK JOURNAL OF PHYSICS, vol. 55, iss. 7, pp. 893-911, 2005.
  [Bibtex]

  @article ISI:000231635800014,
  Author = Tucek, J and Zboril, R,
  Title = Zero-field and in-field Mossbauer spectroscopy as a tool for structural
     and magnetic characterization of maghemite (gamma-Fe(2)O(3))
     nanoparticles,
  Journal = CZECHOSLOVAK JOURNAL OF PHYSICS,
  Year = 2005,
  Volume = 55,
  Number = 7,
  Pages = 893-911,
  Month = JUL,
  Note = International Colloquium on Mossbauer Spectroscopy in Materials Science,
     Vsemina, CZECH REPUBLIC, JUN 01-04, 2004,
  Abstract = Nowadays, nanoparticles of maghemite (gamma-Fe(2)O(3)) represent one of
     the most useful materials in modern advanced nanotechnological
     applications due to their superior magnetic properties. For their
     characterization, (57)Fe zero-field and in-field Mossbauer spectroscopy
     have proved themselves to be very powerful and effective tools which are
     crucial for an investigation of the local surrounding of iron atoms and
     observation of dynamic effects. The structural and magnetic
     characteristics of maghemite and its nanoparticles are thus discussed
     with regard to their zero-field and in-field Mossbauer spectra recorded
     at various temperatures and applied external magnetic fields. In
     addition, a special attention is also devoted to remarkable physical
     phenomena (superparamagnetism, spin canting) occurring largely in
     maghemite nanosized particles.,
  DOI = 10.1007/s10582-005-0091-1,
  ISSN = 0011-4626,
  Unique-ID = ISI:000231635800014,
  

• R. Zboril, L. Machala, M. Mashlan, and M. Hermanek, "Nanocrystalline iron(III) oxides formed under dynamic heating of ferrous
  oxalate dihydrate in air," in Industrial Applications of the Mossbauer Effect, 2005, pp. 257-262.
  [Bibtex]

  @inproceedings ISI:000229434000039,
  Author = Zboril, R and Machala, L and Mashlan, M and Hermanek, M,
  Editor = Gracia, M and Marco, JF and Plazaola, F,
  Title = Nanocrystalline iron(III) oxides formed under dynamic heating of ferrous
     oxalate dihydrate in air,
  Booktitle = Industrial Applications of the Mossbauer Effect,
  Series = AIP CONFERENCE PROCEEDINGS,
  Year = 2005,
  Volume = 765,
  Pages = 257-262,
  Note = International Symposium on the Industrial Applications of the Mossbauer
     Effect, Madrid, SPAIN, OCT 04-08, 2004,
  Organization = Spansh Sci Council,
  Abstract = A dynamic study of the thermal decomposition of FeC2O4 center dot 2H(2)O
     has been carried out in air in the range of 25-500 degrees C with a
     heating rate of 5 degrees C/min using the conventional methods of
     thermal analysis including TG and DSC. The phase composition at
     different calcination temperatures was determined from Fe-57 Mossbauer
     spectra. It was found that the primary dehydration and liberation of
     carbon oxides from the oxalate structure is followed by a direct
     oxidation of Fe(II) to nanocrystalline Fe2O3 with a large surface area
     of about 250 m(2)/g. Such nanopowder is comprised of nanocrystalline
     particles of gamma- and alpha-Fe2O3 as proved by XRD, low temperature
     Mossbauer spectroscopy and HRTEM analysis. In contradiction with the
     literature assumption, no traces of magnetite (Fe3O4) have been
     identified during the oxidative decomposition in air. The simultaneous
     formation of both gamma- and alpha-Fe2O3 polymorphs at low temperatures
     is followed by an isochemical structural change of maghemite to
     hematite. The comparison of Mossbauer spectra taken at different
     temperatures proves clearly that maghemite appears in samples only as
     superparamagnetic particles at room temperature (RT), while all sextet
     components in RT Mossbauer spectra can be assigned to hematite particles
     with varying size distributions.,
  ISSN = 0094-243X,
  ISBN = 0-7354-0250-7,
  Unique-ID = ISI:000229434000039,
  

• J. Pechousek, N. Mashlan, and R. Zboril, "Mossbauer spectrometer in the PXI/CompactPCI modular system," in INDUSTRIAL APPLICATIONS OF THE MOSSBAUER EFFECT, 2005, pp. 384-388.
  [Bibtex]

  @inproceedings ISI:000229434000060,
  Author = Pechousek, J and Mashlan, N and Zboril, R,
  Editor = Gracia, M and Marco, JF and Plazaola, F,
  Title = Mossbauer spectrometer in the PXI/CompactPCI modular system,
  Booktitle = INDUSTRIAL APPLICATIONS OF THE MOSSBAUER EFFECT,
  Series = AIP Conference Proceedings,
  Year = 2005,
  Volume = 765,
  Pages = 384-388,
  Note = International Symposium on the Industrial Applications of the Mossbauer
     Effect, Madrid, SPAIN, OCT 04-08, 2004,
  Organization = Spansh Sci Council,
  Abstract = Two commercially available modules, a digital oscilloscope (NI 5102) and
     a function generator (NI 5401) in the P)G (PCI eXtension for
     Instrumentation) or PCI standard from National Instruments Inc.,
     supported by the driver software, have been used for building a
     computer-based Mossbauer spectrometer. The RTSI (Real-Time System
     Integration) bus is used for synchronizing the accumulation of the
     detector impulses to the Mossbauer spectrum with velocity of the
     ``source-sample'' relative motion. The amplitude selection of the
     impulses from the detector output is based on the use of the Waveform
     Peak Detection. vi function. This function is available in the graphical
     programming environment LabVIEW 7 Express which serves for an
     implementation of the virtual instrument of the Mossbauer spectrometer.
     Mossbauer spectra can be accumulated in the constant and variable
     velocity modes; moreover, there is a possibility to register gamma-ray
     spectra in the multichannel analyzer mode. Two types of the detectors (a
     NaI(T1) and a resonance scintillation detector) have been used with the
     new Mossbauer spectrometer.,
  ISSN = 0094-243X,
  ISBN = 0-7354-0250-7,
  Unique-ID = ISI:000229434000060,
  

• H. Bartonkova, M. Mashlan, R. Zboril, J. Pechousek, O. Schneeweiss, and P. Martinec, "Mossbauer study of iron oxide modified montmorillonite," HYPERFINE INTERACTIONS, vol. 165, iss. 1-4, pp. 221-225, 2005.
  [Bibtex]

  @article ISI:000243551500033,
  Author = Bartonkova, H. and Mashlan, M. and Zboril, R. and Pechousek, J. and
     Schneeweiss, O. and Martinec, P.,
  Title = Mossbauer study of iron oxide modified montmorillonite,
  Journal = HYPERFINE INTERACTIONS,
  Year = 2005,
  Volume = 165,
  Number = 1-4,
  Pages = 221-225,
  Note = 28th International Conference on the Applications of the Mossbauer
     Effect (ICAME 2005), Montpellier, FRANCE, SEP 04-09, 2005,
  Organization = LAMMI UMR; CNRS,
  Abstract = Montmorillonite particles were modified by iron oxides using the
     precipitation process with the aim to monitor the differences in the
     structural and magnetic properties of intercalated and adsorbed Fe3+.
     The Mossbauer spectra recorded at 5 K in zero and 6 T external fields,
     IR spectra and TG curves measured in zero and 32 mT fields identified
     the ferrihydrite pillars in an interlayer space of the montmorillonite
     structure and gamma-Fe2O3 nanoparticles adsorbed on the mineral surface.
     The temperature dependent Mossbauer spectra (25-300 K) reflect the
     superparamagnetic behaviour of maghemite nanoparticles and ferrihydrite
     pillars with the blocking temperatures of about 80 and 25 K,
     respectively.,
  DOI = 10.1007/s10751-006-9269-6,
  ISSN = 0304-3843,
  Unique-ID = ISI:000243551500033,
  

• M. Miglierini, T. Kanuch, Y. Jiraskova, M. Mashlan, R. Zboril, and M. Vujtek, "Surface properties of Fe76Mo8Cu1B15 alloy after annealing," HYPERFINE INTERACTIONS, vol. 165, iss. 1-4, pp. 75-80, 2005.
  [Bibtex]

  @article ISI:000243551500011,
  Author = Miglierini, M. and Kanuch, T. and Jiraskova, Y. and Mashlan, M. and
     Zboril, R. and Vujtek, M.,
  Title = Surface properties of Fe76Mo8Cu1B15 alloy after annealing,
  Journal = HYPERFINE INTERACTIONS,
  Year = 2005,
  Volume = 165,
  Number = 1-4,
  Pages = 75-80,
  Note = 28th International Conference on the Applications of the Mossbauer
     Effect (ICAME 2005), Montpellier, FRANCE, SEP 04-09, 2005,
  Organization = LAMMI UMR; CNRS,
  Abstract = NANOPERM-type alloy Fe76Mo8Cu1B15 is investigated in amorphous and in
     partially crystallized state. Samples were prepared by I h isothermal
     annealing in vacuum at temperatures ranging from 330 degrees C up to 700
     degrees C. Bulk and surface microstructural characteristics were studied
     using transmission and conversion electron Mossbauer effect techniques,
     respectively. Surface features were checked by the help of atomic force
     microscopy. Presence of nanocrystalline bcc-Fe phase was detected during
     the first crystallization stage, The crystallization process starts at
     450 degrees C and it is more pronounced in surface regions than in the
     bulk. With progressing crystallization, hyperfine parameters especially
     of the amorphous residual phase are altered. Distinctions in surface
     morphology are revealed between wheel and air side of the ribbon-shaped
     samples.,
  DOI = 10.1007/s10751-006-9250-4,
  ISSN = 0304-3843,
  Unique-ID = ISI:000243551500011,
  

• L. Kvitek, R. Prucek, A. Panacek, R. Novotny, J. Hrbac, and R. Zboril, "The influence of complexing agent concentration on particle size in the
  process of SERS active silver colloid synthesis," JOURNAL OF MATERIALS CHEMISTRY, vol. 15, iss. 10, pp. 1099-1105, 2005.
  [Bibtex]

  @article ISI:000227320600013,
  Author = Kvitek, L and Prucek, R and Panacek, A and Novotny, R and Hrbac, J and
     Zboril, R,
  Title = The influence of complexing agent concentration on particle size in the
     process of SERS active silver colloid synthesis,
  Journal = JOURNAL OF MATERIALS CHEMISTRY,
  Year = 2005,
  Volume = 15,
  Number = 10,
  Pages = 1099-1105,
  Abstract = A one-step chemical reduction route towards silver colloid particles
     with controllable sizes ranging from 45 to 380 nm is reported in this
     article. Silver particles, prepared by the reduction of
     [Ag(NH3)(2)](+) complex with various reducing sugars, were
     characterised by means of transmission electron microscopy ( TEM),
     dynamic light scattering ( DLS) measurement of particle size
     distribution, and UV-VIS spectroscopy. The concentration of ammonia in
     the reaction mixture and the choice of the reducing sugar are the key
     parameters in the control of particle size. Synthesised silver colloid
     particles were successfully tested for use in surface-enhanced Raman
     spectroscopy (SERS) with 1-methyladenine as a testing substance.,
  DOI = 10.1039/b417007e,
  ISSN = 0959-9428,
  Unique-ID = ISI:000227320600013,
  

• K. Nomura, R. Zboril, M. Mashlan, A. Rykov, and I. Felner, "Mossbauer study of (Ca,Sr)RuO3 doped with Fe-57," in Industrial Applications of the Mossbauer Effect, 2005, pp. 233-238.
  [Bibtex]

  @inproceedings ISI:000229434000035,
  Author = Nomura, K and Zboril, R and Mashlan, M and Rykov, A and Felner, I,
  Editor = Gracia, M and Marco, JF and Plazaola, F,
  Title = Mossbauer study of (Ca,Sr)RuO3 doped with Fe-57,
  Booktitle = Industrial Applications of the Mossbauer Effect,
  Series = AIP CONFERENCE PROCEEDINGS,
  Year = 2005,
  Volume = 765,
  Pages = 233-238,
  Note = International Symposium on the Industrial Applications of the Mossbauer
     Effect, Madrid, SPAIN, OCT 04-08, 2004,
  Organization = Spansh Sci Council,
  Abstract = 2\% of Fe-57 doped in Ca1-xSrxRuO3 materials (x ranging from 0 to 1)
     were prepared by a sol-gel method. The influence of the Sr/Ca ratio on
     the Structural and magnetic properties of ruthenates was investigated by
     XRD and Mossbauer spectroscopy (15 - 300 K). The refined lattice
     parameters indicate an expansion of the unit cell volume with Sr and a
     transition of the crystal symmetry from orthorhombic for x < 0.4 to
     tetragonal for higher Sr content. This transition is also manifested in
     the Fe Mossbauer spectra through the change of (a) the quadrupole
     splitting parameter, (similar to 0.1 mm/s for x=0 and similar to 0 or
     slightly negative for x >= 0.4 samples). (b) The isomer shift (c) the
     magnetic hyperfine parameters (H-eff), and (d) the magnetic transition
     temperature, which increase with x. The temperature dependence of H-eff
     is significantly different for the (CaRu0.98Fe0.02O3)-Fe-57 as compared
     to samples with x = 0.6, 0.8 and 1. In the latter materials, Mossbauer
     spectra at low temperatures show a much wider distribution in Heff In
     particular, the field maximum probability decreases progressively with
     T, whereas for the x=0 material, it remains almost constant. Such
     behavior is closely related with the literature data on a spin glass
     ordering of Ca1-xSrxRuO3 with x < 0.2 and a ferromagnetic behavior for
     the rich Sr samples.,
  ISSN = 0094-243X,
  ISBN = 0-7354-0250-7,
  Unique-ID = ISI:000229434000035,
  

2004

• R. Zboril, L. Machala, M. Mashlan, and V. Sharma, "Iron(III) oxide nanoparticles in the thermally induced oxidative
  decomposition of Prussian Blue, Fe(4)[Fe(CN)(6)](3)," CRYSTAL GROWTH & DESIGN, vol. 4, iss. 6, pp. 1317-1325, 2004.
  [Bibtex]

  @article ISI:000224983100034,
  Author = Zboril, R and Machala, L and Mashlan, M and Sharma, V,
  Title = Iron(III) oxide nanoparticles in the thermally induced oxidative
     decomposition of Prussian Blue, Fe(4)[Fe(CN)(6)](3),
  Journal = CRYSTAL GROWTH \& DESIGN,
  Year = 2004,
  Volume = 4,
  Number = 6,
  Pages = 1317-1325,
  Month = NOV-DEC,
  Abstract = The thermally induced decomposition of Prussian Blue,
     Fe(4)[Fe(CN)(6)](3) (PB), was studied in air at 250 and 350 C.
     Amorphous Fe(2)O(3) nanoparticles, cubic bixbyite beta- and cubic spinel
     gamma-Fe(2)O(3) (maghemite) polymorphs, have been identified as the
     products of the decomposition under different reaction conditions.
     (57)Fe Mossbauer spectroscopy, XRD, AFM, TEM, quasielastic light
     scattering method (QELS) of particle size analysis, BET surface area,
     and magnetization measurements were used to understand the influence of
     the PB particle size and oxidation conditions on the decomposition
     mechanism at 250 and 350 C. At a minimum decomposition temperature of
     250 degreesC, amorphous Fe(2)O(3) nanoparticles were formed with the
     size ranging from 1 to 4 nm and large surface area of 400-200 m(2)/g in
     dependence on the PB particle size. Such small amorphous Fe(2)O(3)
     nanoparticles were obtained by the solid-state route for the first time.
     At 350 degreesC, cubic beta-Fe(2)O(3) and gamma-Fe(2)O(3) polymorphs
     were identified and their contents were found to be strongly dependent
     on the initial PB particle size and oxidation-diffusion conditions.
     Generally, the higher relative content of gamma-Fe(2)O(3) was obtained
     for larger PB particles and in air-limited conditions.,
  DOI = 10.1021/cg049748+,
  ISSN = 1528-7483,
  Unique-ID = ISI:000224983100034,
  

• P. Kopel, Z. Travnicek, R. Zboril, and J. Marek, "Synthesis, X-ray and Mossbauer study of iron(II) complexes with
  trithiocyanuric acid (ttcH(3)). The X-ray structures of
  [Fe(bpy)(3)](ttcH) center dot 2bpy center dot 7H(2)O and
  [Fe(phen)(3)](ttcH(2))(ClO4) center dot 2CH(3)OH center dot 2H(2)O," POLYHEDRON, vol. 23, iss. 14, pp. 2193-2202, 2004.
  [Bibtex]

  @article ISI:000224160200002,
  Author = Kopel, P and Travnicek, Z and Zboril, R and Marek, J,
  Title = Synthesis, X-ray and Mossbauer study of iron(II) complexes with
     trithiocyanuric acid (ttcH(3)). The X-ray structures of
     [Fe(bpy)(3)](ttcH) center dot 2bpy center dot 7H(2)O and
     [Fe(phen)(3)](ttcH(2))(ClO4) center dot 2CH(3)OH center dot 2H(2)O,
  Journal = POLYHEDRON,
  Year = 2004,
  Volume = 23,
  Number = 14,
  Pages = 2193-2202,
  Month = SEP 9,
  Abstract = Iron(II) complexes with a combination of nitrogen-donor ligands and
     trithiocyanuric acid (ttcH(3)) of the composition [Fe(bpy)(2)(ttcH)]
     (.) 2H(2)O (1), [Fe(bpY)(3)](ttcH) (.) 2bpy (.) 7H(2)O (2),
     [Fe(terpyCl)(2)](ttcH(2))(2) (.) H2O (3), [Fe(phen)(2)(ttcH)] (.)
     2H(2)O (4), [Fe-(nphen)(2)(ttcH)] (.) 4H(2)O (5) and
     [Fc(phen)(3)](ttcH(2))(ClO4) (.) 2CH(3)OH (.) 2H(2)O (6), where bpy =
     2,2'-bipyridine, terpyCl = 4'-chloro-2,2':6',2'-terpyridine, phen =
     1,10-phenanthroline, nphen = 5-nitro-1,10-phenanthroline, have been
     prepared. The compounds, except for 6, have been characterized by
     elemental analysis, Fe-57 Mossbauer, IR and UV-Vis spectroscopies. It
     has been found that the trithiocyanurate ion is either coordinated to
     the metal centre (1, 4 and 5) or situated outside the inner coordination
     sphere of the iron(II) ion (2, 3 and 6). The X-ray crystal structures of
     complexes 2 and 6 demonstrate that the ligands enforce a distorted
     octahedral geometry on the Fell ions with monoanionic 2 and dianionic 6
     forms of uncoordinated trithiocyanuric acid. Density-functional theory
     (DFT) calculations (B3LYP/6-31 + G*) were used for the geometry
     optimisation and infrared frequencies calculations of differently
     protonated forms of the acid (ttcH(3), ttcH(2)(-) and ttcH(2)(-)). (C)
     2004 Elsevier Ltd. All rights reserved.,
  DOI = 10.1016/j.poly.2004.06.024,
  ISSN = 0277-5387,
  Unique-ID = ISI:000224160200002,
  

• M. Mashlan, V. Yevdokimov, J. Pechousek, R. Zboril, and A. Kholmetskii, "Mossbauer spectrometer with novel moving system and resonant detection
  of gamma rays," HYPERFINE INTERACTIONS, vol. 156, iss. 1, pp. 15-19, 2004.
  [Bibtex]

  @article ISI:000224130500004,
  Author = Mashlan, M and Yevdokimov, V and Pechousek, J and Zboril, R and
     Kholmetskii, A,
  Title = Mossbauer spectrometer with novel moving system and resonant detection
     of gamma rays,
  Journal = HYPERFINE INTERACTIONS,
  Year = 2004,
  Volume = 156,
  Number = 1,
  Pages = 15-19,
  Month = JUN-SEP,
  Note = 27th International Conference on the Applications of the Mossbauer
     Effect, Muscat, OMAN, SEP 21-25, 2003,
  Abstract = A Mossbauer spectrometer with the collective synchronous motion of the
     radioactive source and resonant detector has been built. The new special
     transducer with four drive coils and one velocity pickup coil has been
     developed. The polyamide fibers serve as suspension brackets, barium
     ferrite magnets are used. The mechanical construction of transducer
     allows using different cryostats and furnaces, because the sample is
     immovable. The resonant detector consists of the thin foil of the
     organic plastic scintillator with the dissolved substance converting the
     resonant gamma rays to conversion electrons.,
  DOI = 10.1023/B:HYPE.0000043202.86190.55,
  ISSN = 0304-3843,
  Unique-ID = ISI:000224130500004,
  

• R. Zboril, M. Mashlan, L. Machala, J. Walla, K. Barcova, and P. Martinec, "Characterization and thermal behaviour of garnets from almandine-pyrope
  series at 1200 degrees C," HYPERFINE INTERACTIONS, vol. 156, iss. 1, pp. 403-410, 2004.
  [Bibtex]

  @article ISI:000224130500062,
  Author = Zboril, R and Mashlan, M and Machala, L and Walla, J and Barcova, K and
     Martinec, P,
  Title = Characterization and thermal behaviour of garnets from almandine-pyrope
     series at 1200 degrees C,
  Journal = HYPERFINE INTERACTIONS,
  Year = 2004,
  Volume = 156,
  Number = 1,
  Pages = 403-410,
  Month = JUN-SEP,
  Note = 27th International Conference on the Applications of the Mossbauer
     Effect, Muscat, OMAN, SEP 21-25, 2003,
  Abstract = The natural garnets from almandine (Fe3Al2Si3O12) -pyrope (Mg3Al2Si3O12)
     series with the iron to magnesium atomic ratio ranging from 0.2 to 1
     were characterised and their thermal behaviour at 1200degreesC studied
     by Fe-57 Mossbauer spectroscopy, X-ray powder diffraction, X-ray
     fluorescence, DTA, TG and electron microprobe analysis. The pyrope-type
     samples with a dominant magnesium content at position 24c in the cubic
     garnet structure undergo oxidative decomposition at 1200degreesC
     resulting in the formation of the paramagnetic spinel Mg(Al, Fe)(2)O-4
     structure with a low iron content, enstatite (Mg, Fe) SiO3 and anorthite
     CaAl2Si2O8 as the host compound for calcium. Contrary to pyropes, the
     iron-rich garnets exhibit complete oxidation at 1200degreesC conforming
     to the formation of magnetically ordered nanocrystalline gamma-Fe2O3 or
     Mg(Fe, Al)(2)O-4 spinels depending on the initial chemical composition
     of the garnets. In the reaction products of iron-rich garnets,
     cordierite (Mg2Al4Si5O18) and anorthite were identified as non-ferrous
     phases.,
  DOI = 10.1023/B:HYPE.0000043260.24239.48,
  ISSN = 0304-3843,
  Unique-ID = ISI:000224130500062,
  

• M. Mashlan, R. Zboril, L. Machala, M. Vujtek, J. Walla, and K. Nomura, "Mossbauer spectroscopy in study of thermally induced crystallization of
  amorphous Fe(2)O(3) nanoparticles," in ISMANAM 2003: METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE
  MATERIALS, 2004, pp. 641-647.
  [Bibtex]

  @inproceedings ISI:000223641200101,
  Author = Mashlan, M and Zboril, R and Machala, L and Vujtek, M and Walla, J and
     Nomura, K,
  Editor = Kiminami, CS and Bolfarini, C and BottaF, WJ,
  Title = Mossbauer spectroscopy in study of thermally induced crystallization of
     amorphous Fe(2)O(3) nanoparticles,
  Booktitle = ISMANAM 2003: METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE
     MATERIALS,
  Series = JOURNAL OF METASTABLE AND NANOCRYSTALLINE MATERIALS SERIES,
  Year = 2004,
  Volume = 20-21,
  Pages = 641-647,
  Note = 10th International Symposium on Metastable, Mechanically Alloyed and
     Nanocrystalline Materials (ISMANAM 2003), Foz do Iguacu, BRAZIL, AUG
     24-28, 2003,
  Abstract = (57)Fe Mossbauer spectroscopy is demonstrated as an effective tool in
     the identification, magnetic and structural characterization of
     iron(III) oxides formed by thermally induced oxidative decomposition of
     FeC(2)O(4).2H(2)O and by the secondary crystallization of amorphous
     Fe(2)O(3) nanopowder. AFM measurements revealed that the primary
     amorphous nanoparticles are between 1 and 3 nm, in accordance with the
     large surface area of 250 m(2)/g as determined by BET analysis. The
     temperature depended Mossbauer measurements of amorphous Fe(2)O(3)
     showed the magnetic transition temperature lower than 70 K with the
     sharp evolution of the spectral lines between 53 and 76 K as typical for
     ultrafine and strongly interacted particles. As the primary
     crystallization product at low temperatures, gamma-Fe(2)O(3) (maghemite)
     was identified by XRD. The broad distribution of magnetic fields in
     Mossbauer spectra illustrates the broad size distribution of maghemite
     nanoparticles. The thermally stable alpha-Fe(2)O(3) (hematite) can be
     produced by the direct crystallization of amorphous phase at higher
     temperatures or by the structural transformation of the primarily formed
     maghemite at lower temperatures. Particles of hematite formed at
     200degreesC reveal the Morin transition temperature suppressed below 20
     K corresponding to the size about 20 nm.,
  ISSN = 1422-6375,
  ISBN = 0-87849-944-X,
  Unique-ID = ISI:000223641200101,
  

• R. Zboril, L. Machala, M. Mashlan, M. Hermanek, M. Miglierini, and A. Fojtik, "Structural, magnetic and size transformations induced by isothermal
  treatment of ferrous oxalate dihydrate in static air conditions," in SECOND SEEHEIM CONFERENCE ON MAGNETISM, PROCEEDINGS, 2004, pp. 3583-3588.
  [Bibtex]

  @inproceedings ISI:000227060600080,
  Author = Zboril, R and Machala, L and Mashlan, M and Hermanek, M and Miglierini,
     M and Fojtik, A,
  Editor = Ghafari, M and Enz, T and Hahn, H,
  Title = Structural, magnetic and size transformations induced by isothermal
     treatment of ferrous oxalate dihydrate in static air conditions,
  Booktitle = SECOND SEEHEIM CONFERENCE ON MAGNETISM, PROCEEDINGS,
  Year = 2004,
  Pages = 3583-3588,
  Note = 2nd Seeheim Conference on Magnetism (SCM2004), Seeheim, GERMANY, JUN
     27-JUL 01, 2004,
  Organization = Deutsch Forsch Gemeinsch; Forsch Zentrum Karlsruhe; Darmstadt Univ
     Technol,
  Abstract = Thermal decomposition of the FeC2O4.2H(2)O powder has been studied
     isothermally in static air conditions at minimum decomposition
     temperature of 180 degreesC using Fe-57 Mossbauer spectroscopy, XRD,
     HRTEM, AFM and BET surface area measurements. Dehydration and liberation
     of carbon oxides from powdered sample is accompanied by direct oxidation
     of Fe(II) to nanocrystalline Fe2O3 without any indications of the
     stabilization of the magnetite (Fe3O4) phase. Decomposition process is
     completed after two hours and as-prepared nanopowder (3-5 nm), with a
     large surface area of about 250 m(2)/g, is comprised of ultrafine
     superparamagnetic particles of gamma-Fe2O3 (maghemite) and alpha-Fe2O3
     (hematite) as proved by low temperature Mossbauer spectroscopy, XRD and
     HRTEM analysis. The simultaneous formation of both polymorphs is
     probably related with the non-equivalent diffusion conditions on the
     surface and in the bulk of oxalate particles. With increasing time, the
     particle size induced phase transformation of maghemite to hematite has
     been observed by AFM and XRD. Mossbauer spectra demonstrate that
     maghemite particles are formed only in superparamagnetic state
     (doublet), while magnetic components (sextet) in room temperature
     spectra can be assigned exclusively to hematite particles with size
     distribution produced by gradual crystallization of primary
     superparamagnetic nanoparticles of the same structure as well as by the
     phase transition of maghemite phase. (C) 2004 WILEYNCH Verlag GmbH \&
     Co. KGaA, Weinheim.,
  DOI = 10.1002/pssc.200405511,
  ISBN = 3-527-40577-1,
  Unique-ID = ISI:000227060600080,
  

• R. Zboril, L. Machalal, M. Mashlan, J. Tucek, R. Muller, and O. Schneeweiss, "Magnetism of amorphous Fe2O3 nanopowders synthesized by solid-state
  reactions," in SECOND SEEHEIM CONFERENCE ON MAGNETISM, PROCEEDINGS, 2004, pp. 3710-3716.
  [Bibtex]

  @inproceedings ISI:000227060600107,
  Author = Zboril, R and Machalal, L and Mashlan, M and Tucek, J and Muller, R and
     Schneeweiss, O,
  Editor = Ghafari, M and Enz, T and Hahn, H,
  Title = Magnetism of amorphous Fe2O3 nanopowders synthesized by solid-state
     reactions,
  Booktitle = SECOND SEEHEIM CONFERENCE ON MAGNETISM, PROCEEDINGS,
  Year = 2004,
  Pages = 3710-3716,
  Note = 2nd Seeheim Conference on Magnetism (SCM2004), Seeheim, GERMANY, JUN
     27-JUL 01, 2004,
  Organization = Deutsch Forsch Gemeinsch; Forsch Zentrum Karlsruhe; Darmstadt Univ
     Technol,
  Abstract = Monodispersed amorphous Fe2O3 nanoparticles with the size ranging from 1
     to 4 nm have been prepared by thermally induced oxidative decomposition
     of Prussian Blue, Fe-4[Fe(CN)(6)](3) in air. Amorphous nanopowders
     exhibit specific magnetic behaviour strongly affected by interparticle
     interactions and extremely low particle size with a high contribution of
     the surface anisotropy as illustrated by temperature dependent and
     external field Mossbauer spectroscopy and magnetization measurements
     (4-300 K). Some of the properties are in close similarity to those of
     spin glasses including the fast thermal variation of superparamagnetic
     fraction in the Mossbauer spectra, or the particle size independence of
     the blocking temperature, and non-saturation of magnetization even at 5
     K and magnetic field of 10 T. The reduced value of internal magnetic
     hyperfine field (similar to49 T at 5 K) and no indications of the
     tetrahedral Fe3+ sites in the 5T/5K external field Mossbauer spectra are
     the principal found differences in comparison with the magnetic
     behaviour of nanocrystalline gamma-Fe2O3. (C) 2004 WILEY-VCH Verlag GmbH
     \& Co. KGaA, Weinheim,
  ISBN = 3-527-40577-1,
  Unique-ID = ISI:000227060600107,
  

2003

• R. Zboril, M. Mashlan, K. Barcova, J. Walla, E. Ferrow, and P. Martinec, "Thermal behaviour of pyrope at 1000 and 1100 degrees C: mechanism of
  Fe(2+) oxidation and decomposition model," PHYSICS AND CHEMISTRY OF MINERALS, vol. 30, iss. 10, pp. 620-627, 2003.
  [Bibtex]

  @article ISI:000186463400005,
  Author = Zboril, R and Mashlan, M and Barcova, K and Walla, J and Ferrow, E and
     Martinec, P,
  Title = Thermal behaviour of pyrope at 1000 and 1100 degrees C: mechanism of
     Fe(2+) oxidation and decomposition model,
  Journal = PHYSICS AND CHEMISTRY OF MINERALS,
  Year = 2003,
  Volume = 30,
  Number = 10,
  Pages = 620-627,
  Month = OCT,
  Abstract = The mechanism of thermally induced oxidation of Fe(2+) from natural
     pyrope has been studied at 1000 and 1100 degreesC using (57)Fe Mossbauer
     spectroscopy in conjunction with XRD, XRF, AFM, QELS, TG, DTA and
     electron microprobe analyses. At 1000 degreesC, the non-destructive
     oxidation of Fe(2+) in air includes the partial stabilization of Fe(3+)
     in the dodecahedral 24c position of the garnet structure and the
     simultaneous formation of hematite particles (15-20 nm). The
     incorporation of the magnesium ions to the hematite structure results in
     the suppression of the Morin transition temperature to below 20 K. The
     general garnet structure is preserved during the redox process at 1000
     degreesC, in accordance with XRD and DTA data. At 1100 degreesC,
     however, oxidative conversion of pyrope to the mixed magnesium aluminium
     iron oxide, Fe-orthoenstatite and cristoballite was observed. During
     this destructive decomposition, Fe(2+) is predominantly oxidized and
     incorporated into the spinel structure of Mg(Al,Fe)(2)O(4) and partially
     stabilized in the structure of orthoenstatite, (Mg,Fe)SiO(3). The
     combination of XRD and Mossbauer data suggest the definite reaction
     mechanism prevailing, including the refinement of the chemical
     composition and quantification of the reaction products. The reaction
     mechanism indicates that the respective distribution of Fe(2+)and Fe(3+)
     to the enstatite and spinel structures is determined by the total
     content of Fe(2+) in pyrope.,
  DOI = 10.1007/s00269-003-0355-x,
  ISSN = 0342-1791,
  Unique-ID = ISI:000186463400005,
  

• A. Bourlinos, R. Zboril, and D. Petridis, "A simple route towards magnetically modified zeolites," MICROPOROUS AND MESOPOROUS MATERIALS, vol. 58, iss. 2, pp. 155-162, 2003.
  [Bibtex]

  @article ISI:000181423600008,
  Author = Bourlinos, AB and Zboril, R and Petridis, D,
  Title = A simple route towards magnetically modified zeolites,
  Journal = MICROPOROUS AND MESOPOROUS MATERIALS,
  Year = 2003,
  Volume = 58,
  Number = 2,
  Pages = 155-162,
  Month = MAR 4,
  Abstract = A simple route for decorating the external surfaces of zeolites with
     maghemite. nanoparticles is described. The synthesis comprises feeding
     of a zeolite support with different amounts of iron(III) by employing
     melt exchange reactions, exposure of the iron-containing solids to
     vapors of formic acid and finally calcination of the resulting
     derivatives in air to afford maghemite nanoparticles embedded in the
     zeolite host. The as-prepared magnetically modified solids,
     characterized by XRD, Mossbauer and magnetic measurements and SEM and
     TEM techniques, were found to retain the cation exchange capacity of the
     parent zeolite as well as its structural integrity. (C) 2002 Elsevier
     Science Inc. All rights reserved.,
  DOI = 10.1016/S1387-1811(02)00613-3,
  ISSN = 1387-1811,
  Unique-ID = ISI:000181423600008,
  

• R. Zboril, M. Mashlan, L. Machala, and P. Bezdicka, "Iron(III) oxides formed during thermal conversion of rhombohedral
  iron(III) sulfate," in MATERIAL RESEARCH IN ATOMIC SCALE BY MOSSBAUER SPECTROSCOPY, 2003, pp. 21-30.
  [Bibtex]

  @inproceedings ISI:000183172700003,
  Author = Zboril, R and Mashlan, M and Machala, L and Bezdicka, P,
  Editor = Mashlan, M and Miglierini, M and Schaaf, P,
  Title = Iron(III) oxides formed during thermal conversion of rhombohedral
     iron(III) sulfate,
  Booktitle = MATERIAL RESEARCH IN ATOMIC SCALE BY MOSSBAUER SPECTROSCOPY,
  Series = NATO Science Series II-Mathematics Physics and Chemistry,
  Year = 2003,
  Volume = 94,
  Pages = 21-30,
  Note = Conference of the NATO Advanced Research Workshop on Material Research
     in Atomic Scale by Mossbauer Spectroscopy, SMOLENICE, SLOVAKIA, JUN
     01-06, 2002,
  Organization = NATO,
  Abstract = The mechanism of thermal decomposition of rhombohedral iron(Ill) sulfate
     in air depends significantly on the conditions for diffusion of SO(3)
     (temperature, thickness of the powdered layer, particle size). The
     influence of particle size on the reaction mechanism was studied at
     600degreesC using (57)Fe Mossbauer spectroscopy and XRD. Corundum-type
     alpha-Fe(2)O(3) bixbyite-type beta-Fe(2)O(3) and orthorhombic
     epsilon-Fe(2)O(3) were identified as solid conversion products. Time
     dependence of the relative contents of individual polymorphs
     (x-Fe(2)O(3)/SigmaFe(2)O(3)) is a suitable means for monitoring the
     mechanism of their formation and thermal transformation during the
     reaction process. The quantitative Mossbauer data obtained from the
     corresponding spectral areas demonstrate that different transformations
     occur in the surface, layer and in the bulk of sulfate particles.
     Particles of beta-Fe(2)O(3) formed after loosening Of SO(3) from the
     surface layer of sulfate particles are relatively stable at 600degreesC
     as documented by the very slow structural change to hematite. The
     formation of complicated epsilon-Fe(2)O(3) structure is probably related
     with the slow diffusion Of SO(3) from the bulk of sulfate particles. The
     isochemical transformation of epsilon-Fe(2)O(3) to hematite occurs more
     quickly due to its lower thermal stability in comparison with
     beta-Fe(2)O(3).,
  ISSN = 1568-2609,
  ISBN = 1-4020-1196-2,
  Unique-ID = ISI:000183172700003,
  

• M. Mashlan, R. Zboril, and K. Barcova, "Mossbauer spectroscopy in studying the thermally induced oxidation of
  Fe2+ cations in iron-bearing silicate minerals - Examples of
  applications with almandine, pyrope and olivine," in MATERIAL RESEARCH IN ATOMIC SCALE BY MOSSBAUER SPECTROSCOPY, 2003, pp. 271-284.
  [Bibtex]

  @inproceedings ISI:000183172700028,
  Author = Mashlan, M and Zboril, R and Barcova, K,
  Editor = Mashlan, M and Miglierini, M and Schaaf, P,
  Title = Mossbauer spectroscopy in studying the thermally induced oxidation of
     Fe2+ cations in iron-bearing silicate minerals - Examples of
     applications with almandine, pyrope and olivine,
  Booktitle = MATERIAL RESEARCH IN ATOMIC SCALE BY MOSSBAUER SPECTROSCOPY,
  Series = NATO SCIENCE SERIES, SERIES II: MATHEMATICS, PHYSICS AND CHEMISTRY,
  Year = 2003,
  Volume = 94,
  Pages = 271-284,
  Note = Conference of the NATO Advanced Research Workshop on Material Research
     in Atomic Scale by Mossbauer Spectroscopy, SMOLENICE, SLOVAKIA, JUN
     01-06, 2002,
  Organization = NATO,
  ISBN = 1-4020-1196-2,
  Unique-ID = ISI:000183172700028,
  

• R. Zboril, M. Mashlan, V. Papaefthymiou, and G. Hadjipanayis, "Thermal decomposition of Fe(2)(SO(4))(3): Demonstration of Fe(2)O(3)
  polymorphism," JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, vol. 255, iss. 3, pp. 413-417, 2003.
  [Bibtex]

  @article ISI:000181237200003,
  Author = Zboril, R and Mashlan, M and Papaefthymiou, V and Hadjipanayis, G,
  Title = Thermal decomposition of Fe(2)(SO(4))(3): Demonstration of Fe(2)O(3)
     polymorphism,
  Journal = JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,
  Year = 2003,
  Volume = 255,
  Number = 3,
  Pages = 413-417,
  Abstract = The mechanism of the thermal decomposition of Fe(2)(SO(4))(3) in air has
     been studied at different temperatures (520-700 degreesC) using mainly
     (57)Fe Mossbauer spectroscopy. Iron(III) oxides with corundum (alpha),
     bixbyite (beta), spinel (gamma) and orthorhombic (epsilon) structures
     were identified as solid products of this conversion. A significant
     influence of the heating temperature on the decomposition mechanism and
     on the phase composition of reaction products was found.,
  DOI = 10.1023/A:1022543323651,
  ISSN = 0236-5731,
  Unique-ID = ISI:000181237200003,
  

• K. Barcova, M. Mashlan, R. Zboril, and P. Martinec, "Mossbauer study of transformation mechanism of Fe cations in olivine
  after thermal treatments in air," JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, vol. 255, iss. 3, pp. 529-533, 2003.
  [Bibtex]

  @article ISI:000181237200025,
  Author = Barcova, K and Mashlan, M and Zboril, R and Martinec, P,
  Title = Mossbauer study of transformation mechanism of Fe cations in olivine
     after thermal treatments in air,
  Journal = JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,
  Year = 2003,
  Volume = 255,
  Number = 3,
  Pages = 529-533,
  Abstract = The transformation mechanism of Fe cations in natural olivine after
     thermal treatments in air has been studied using mainly Fe-57 Mossbauer
     spectroscopy. gamma-Fe2O3 nanoparticles appear as the primary Fe3+ phase
     in Mossbauer spectra of olivine samples heated at 600-900 degreesC.
     These nanoparticles are thermally unstable and they are transformed to
     alpha-Fe2O3 with the increase of heating time. Another transformation
     mechanism of iron related with the complete decomposition of olivine
     structure has been observed at temperatures of 1000 degreesC and higher.
     The mixed oxide MgFe2O4 with the spinel structure and enstatite MgSiO3
     were identified as iron-bearing decomposition products.,
  DOI = 10.1023/A:1022588500878,
  ISSN = 0236-5731,
  Unique-ID = ISI:000181237200025,
  

2002

• R. Zboril, M. Mashlan, and D. Petridis, "Iron(III) oxides from thermal processes-synthesis, structural and
  magnetic properties, Mossbauer spectroscopy characterization, and
  applications," CHEMISTRY OF MATERIALS, vol. 14, iss. 3, pp. 969-982, 2002.
  [Bibtex]

  @article ISI:000174534800008,
  Author = Zboril, R and Mashlan, M and Petridis, D,
  Title = Iron(III) oxides from thermal processes-synthesis, structural and
     magnetic properties, Mossbauer spectroscopy characterization, and
     applications,
  Journal = CHEMISTRY OF MATERIALS,
  Year = 2002,
  Volume = 14,
  Number = 3,
  Pages = 969-982,
  Month = MAR,
  Abstract = Structural and magnetic properties, methods of synthesis, and
     applications of seven iron(III) oxide polymorphs, including rare beta,
     epsilon, amorphous, and high-pressure forms, are reviewed. Thermal
     transformations resulting in the formation of iron oxides are classified
     according to different parameters, and their mechanisms are discussed.
     (57)Fe Mossbauer spectroscopy is presented as a powerful tool for the
     identification, distinction, and characterization of individual
     polymorphs. The advantages of Mossbauer spectroscopy are demonstrated
     with two examples related to the study of the thermally induced
     solid-state reactions of Fe(2)(SO(4))(3).,
  DOI = 10.1021/cm0111074,
  ISSN = 0897-4756,
  Unique-ID = ISI:000174534800008,
  

• R. Zboril, M. Mashlan, D. Petridis, D. Krausova, and P. Pikal, "The role of intermediates in the process of red ferric pigment
  manufacture from FeSO(4)center dot 7H(2)O," HYPERFINE INTERACTIONS, vol. 139, iss. 1-4, pp. 437-445, 2002.
  [Bibtex]

  @article ISI:000179497300048,
  Author = Zboril, R and Mashlan, M and Petridis, D and Krausova, D and Pikal, P,
  Title = The role of intermediates in the process of red ferric pigment
     manufacture from FeSO(4)center dot 7H(2)O,
  Journal = HYPERFINE INTERACTIONS,
  Year = 2002,
  Volume = 139,
  Number = 1-4,
  Pages = 437-445,
  Note = 5th International Symposium on the Industrial Applications of the
     Mossbauer Effect, VIRGINIA BEACH, VA, AUG 13-18, 2000,
  Organization = Condensed Matter \& Mat Phys Res Grp,
  Abstract = One method of industrial manufacture of red ferric pigments is based on
     the thermal decomposition of FeSO(4).7H(2)O into
     alpha-Fe(2)O(3)(copperas red). The difficult reproducibility of the
     color quality of the final pigment is the main problem of this process.
     One of the factors that can influence the pigment color is contamination
     by some of the intermediates formed during the transformation process.
     The identification of two groups of intermediates is the basic result of
     an extensive laboratory investigation carried out using (57)Fe Mossbauer
     spectroscopy and X-ray powder diffraction (XRD). The first group of
     intermediates includes sulfato-phases as FeSO(4).H(2)O, FeSO(4), Fe(OH)
     SO(4), Fe(2)O(SO(4))(2), Fe(2)O(SO(4))(2).xH(2)O xis an element of(0,
     1), and Fe(2)(SO(4))(3). Thermally metastable polymorphs of iron(III)
     oxide, beta-Fe(2)O(3), gamma-Fe(2)O(3) and epsilon-Fe(2)O(3), represent
     the other group. Mossbauer characterization of all intermediate products
     is given. A significant influence of beta-Fe(2)O(3) on the pigment color
     was found.,
  DOI = 10.1023/A:1021259432720,
  ISSN = 0304-3843,
  Unique-ID = ISI:000179497300048,
  

• R. Zboril, M. Mashlan, K. Barcova, and M. Vujtek, "Thermally induced solid-state syntheses of gamma-Fe2O3 nanoparticles and
  their transformation to alpha-Fe2O3 via epsilon-Fe2O3," HYPERFINE INTERACTIONS, vol. 139, iss. 1-4, pp. 597-606, 2002.
  [Bibtex]

  @article ISI:000179497300066,
  Author = Zboril, R and Mashlan, M and Barcova, K and Vujtek, M,
  Title = Thermally induced solid-state syntheses of gamma-Fe2O3 nanoparticles and
     their transformation to alpha-Fe2O3 via epsilon-Fe2O3,
  Journal = HYPERFINE INTERACTIONS,
  Year = 2002,
  Volume = 139,
  Number = 1-4,
  Pages = 597-606,
  Note = 5th International Symposium on the Industrial Applications of the
     Mossbauer Effect, VIRGINIA BEACH, VIRGINIA, AUG 13-18, 2000,
  Organization = Condensed Matter \& Mat Phys Res Grp,
  Abstract = The thermally induced solid-state syntheses of gamma-Fe2O3 nanoparticles
     from iron-bearing materials (FeSO4, Fe-2(C2O4)(3) and almandine garnet)
     are described. Magnetic properties, particles size and the mechanism of
     the structural change of gamma-Fe2O3 nanoparticles have been
     investigated using Fe-57 Mossbauer spectroscopy, X-ray powder
     diffraction (XRD) and atomic force microscopy (AFM). gamma-Fe2O3
     nanoparticles are transformed into hematite via epsilon-Fe2O3 as the
     intermediate.,
  DOI = 10.1023/A:1021226929237,
  ISSN = 0304-3843,
  Unique-ID = ISI:000179497300066,
  

2001

• M. Malon, Z. Travnicek, M. Marysko, R. Zboril, M. Maslan, J. Marek, K. Dolezal, J. Rolcik, V. Krystof, and M. Strnad, "Metal complexes as anticancer agents 2. Iron(III) and copper(II)
  bio-active complexes with N-6-benzylaminopurine derivatives," INORGANICA CHIMICA ACTA, vol. 323, iss. 1-2, pp. 119-129, 2001.
  [Bibtex]

  @article ISI:000172077100015,
  Author = Malon, M and Travnicek, Z and Marysko, M and Zboril, R and Maslan, M and
     Marek, J and Dolezal, K and Rolcik, J and Krystof, V and Strnad, M,
  Title = Metal complexes as anticancer agents 2. Iron(III) and copper(II)
     bio-active complexes with N-6-benzylaminopurine derivatives,
  Journal = INORGANICA CHIMICA ACTA,
  Year = 2001,
  Volume = 323,
  Number = 1-2,
  Pages = 119-129,
  Month = OCT 29,
  Abstract = Iron(III) complexes with
     2-(3-hydroxypropylamino)-6-benzylaniino-9-isopropylpurine (Bohemin,
     HL1), in its protonized form, of the composition (H+HL1)(2)[FeCl5].
     2H(2)O (1), (H+HL1)(2)[FeCl5]. 3H(2)O (2) have been prepared by two
     different routes. A new way for synthesis of copper(II) complex with
     6-(2-chlorobenzylamino)purine (HL2), [Cu-2(mu -Cl)(2)(mu
     -HL2)(2)(HL2)(2)Cl-2]. 2H(2)O (3), together with the preparation of
     copper(II) complex with 6-(3-chlorobenzylamino)purine (HL3), [Cu-2(mu
     -Cl)(2)(mu -HL3)(2)Cl-2] (4), is also reported. The characterization
     have been based on elemental analysis, electronic, infrared, ES + mass
     and Fe-57 Mossbauer spectra, conductivity data and magnetic
     susceptibility temperature measurements over the 4.5-300 K for 1-3, and
     35-300 K for 4. temperature range, respectively. Molecular structure of
     an electroneutral form of the HL2 ligand, (HL2. 2H(2)O), and a
     protonized form of the HL3 ligand, (H+HL3-Cl), have been determined by a
     single-crystal X-ray analysis. A mononuclear trigonal-bipyramidal (for 1
     and 2), binuclear octahedral (for 3) and binuclear trigonal-bipyramidal
     (for 4) structures of the complexes were proposed mainly on the basis of
     spectral and magnetic properties. An S = 3/2-5/2 spin-admixed state in 1
     and 2 was found to be related to the presence of [FeCl5](2-) (S = 3/2)
     and [FeCl5(H2O)](2-) (S = 5/2) complex anions in I and 2, as found by
     Fe-57 Mossbauer spectroscopy. Cytotoxic activity of the complexes was
     determined by a calcein AM assay and IC50 values were also estimated.
     For testing, human malignant melanoma cell line G-361. human osteogenic
     sarcoma cell line HOS, human chronic myelogenous leukaemia K-562 and
     human breast adenocarcinoma cell line MCF7 were used. The inhibition of
     p34(cdc2) kinase by the complexes I and 2, which is known to be one of
     the important mechanisms responsible for cytotoxicity of
     cytokinin-derived compounds, was also studied. (C) 2001 Elsevier Science
     B.V. All rights reserved.,
  DOI = 10.1016/S0020-1693(01)00611-9,
  ISSN = 0020-1693,
  Unique-ID = ISI:000172077100015,
  

• R. Zboril, M. Mashlan, and D. Krausova, "Mechanism of solid-state oxidation of FeSO(4)center dot H(2)O: model of
  simultaneous reactions," CZECHOSLOVAK JOURNAL OF PHYSICS, vol. 51, iss. 7, pp. 719-726, 2001.
  [Bibtex]

  @article ISI:000170360600009,
  Author = Zboril, R and Mashlan, M and Krausova, D,
  Title = Mechanism of solid-state oxidation of FeSO(4)center dot H(2)O: model of
     simultaneous reactions,
  Journal = CZECHOSLOVAK JOURNAL OF PHYSICS,
  Year = 2001,
  Volume = 51,
  Number = 7,
  Pages = 719-726,
  Month = JUL,
  Note = International Colloquium on Mossbauer Spectroscopy in Materials Science,
     VELKE LOSINY, CZECH REPUBLIC, SEP 03-08, 2000,
  Organization = Palacky Univ, Fac Sci, Dept Expt Phys; Acad Sci Czech Republ, Inst Phys
     Mat,
  Abstract = The mechanism of the thermal transformation of FeSO(4).H(2)O in air has
     been studied under isothermal conditions at temperatures
     (150-460)degreesC using mainly (57)Fe Mossbauer spectroscopy and X-ray
     powder diffraction (XRD). Two trends are typical for the thermal
     behaviour of FeSO(4).H(2)O in air, a tendency toward oxidation and
     dehydration. We suggested a new transformation model consisting of two
     ways of oxidation, direct one and indirect one. Fe(OH)SO(4) was
     identified as a product of the direct way, Fe(2)(SO(4))(3) and
     superparamagnetic: nanoparticles of gamma -Fe(2)O(3) as products of the
     indirect way. The suggested model of simultaneous reactions explains the
     unusual non-monotonous dependence of the oxidation level of the
     thermally treated samples on temperature.,
  DOI = 10.1023/A:1017610218372,
  ISSN = 0011-4626,
  Unique-ID = ISI:000170360600009,
  

• K. Barcova, M. Mashlan, R. Zboril, P. Martinec, and P. Kula, "Thermal decomposition of almandine garnet: Mossbauer study," CZECHOSLOVAK JOURNAL OF PHYSICS, vol. 51, iss. 7, pp. 749-754, 2001.
  [Bibtex]

  @article ISI:000170360600013,
  Author = Barcova, K and Mashlan, M and Zboril, R and Martinec, P and Kula, P,
  Title = Thermal decomposition of almandine garnet: Mossbauer study,
  Journal = CZECHOSLOVAK JOURNAL OF PHYSICS,
  Year = 2001,
  Volume = 51,
  Number = 7,
  Pages = 749-754,
  Month = JUL,
  Note = International Colloquium on Mossbauer Spectroscopy in Materials Science,
     VELKE LOSINY, CZECH REPUBLIC, SEP 03-08, 2000,
  Organization = Palacky Univ, Fac Sci, Dept Expt Phys; Acad Sci Czech Republ, Inst Phys
     Mat,
  Abstract = The thermal decomposition of almandine garnet from Zoltye Vody, Ukraine,
     has been studied using (57)Fe Mossbauer spectroscopy. Room temperature
     Mossbauer spectrum of the initial powdered sample is characterised by
     one doublet corresponding to Fe(2+) in dodecahedral position 24c. In the
     room temperature spectra of all heated almandine samples, a doublet
     corresponding to gamma -Fe(2)O(3) nanoparticles appeared. Depending on
     experimental conditions (heating temperature and time), the additional
     spectral lines of alpha -Fe(2)O(3) and epsilon -Fe(2)O(3) were observed
     in Mossbauer spectra.
     It is obvious that the thermal transformation of almandine garnet in air
     is related to the primary formation of gamma -Fe(2)O(3)
     superparamagnetic nanoparticles. gamma -Fe(2)O(3) nanoparticles are
     transformed into epsilon -Fe(2)O(3) and consequently into alpha
     -Fe(2)O(3) at higher temperatures. The mechanism and kinetics of the
     individual structural transformations depend on experimental conditions
     - mainly on the heating temperature and size of the particles.,
  DOI = 10.1023/A:1017618420189,
  ISSN = 0011-4626,
  Unique-ID = ISI:000170360600013,
  

1999

• R. Zboril, M. Mashlan, D. Krausova, and P. Pikal, "Cubic beta-Fe2O3 as the product of the thermal decomposition of
  Fe-2(SO4)(3)," HYPERFINE INTERACTIONS, vol. 121, iss. 1-8, pp. 497-501, 1999.
  [Bibtex]

  @article ISI:000082617800080,
  Author = Zboril, R and Mashlan, M and Krausova, D and Pikal, P,
  Title = Cubic beta-Fe2O3 as the product of the thermal decomposition of
     Fe-2(SO4)(3),
  Journal = HYPERFINE INTERACTIONS,
  Year = 1999,
  Volume = 121,
  Number = 1-8,
  Pages = 497-501,
  Note = 11th International Conference on Hyperfine Interactions, DURBAN, SOUTH
     AFRICA, AUG 23-28, 1998,
  Abstract = The thermal decomposition of Fe-2(SO4)(3) in air has been investigated
     using transmission Mossbauer spectroscopy, CEMS and X-ray powder
     diffraction. The hexagonal alpha-Fe2O3 and cubic beta-Fe2O3 with spinel
     structure have been identified as products of the decomposition. The
     influence of the Fe-2(SO4)(3) particle size on the yield of beta-Fe2O3
     in the final product is pointed out and discussed. The size of particles
     and the calcination temperature are the most important kinetic factors
     determining the phase composition (beta-Fe2O3/alpha-Fe2O3) of iron (III)
     oxide.,
  ISSN = 0304-3843,
  Unique-ID = ISI:000082617800080,
  

• R. Zboril, M. Mashlan, and D. Krausova, "The mechanism of beta-Fe2O3 formation by solid-state reaction between
  NaCl and Fe-2(SO4)(3)," in MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE, 1999, pp. 49-56.
  [Bibtex]

  @inproceedings ISI:000081412500005,
  Author = Zboril, R and Mashlan, M and Krausova, D,
  Editor = Miglierini, M and Petridis, D,
  Title = The mechanism of beta-Fe2O3 formation by solid-state reaction between
     NaCl and Fe-2(SO4)(3),
  Booktitle = MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE,
  Series = NATO ADVANCED SCIENCE INSTITUTE SERIES, SUB-SERIES 3, HIGH TECHNOLOGY,
  Year = 1999,
  Volume = 66,
  Pages = 49-56,
  Note = Conference of the NATO Advanced Research Workshop on Mossbauer
     Spectroscopy in Materials Science, SENEC, SLOVAKIA, SEP 06-11, 1998,
  Organization = NATO Sci Comm,
  Abstract = Mossbauer spectroscopy, x-ray powder diffraction, thermal analysis and
     elemental analysis were used for the study of the mechanism of reaction
     between NaCl and Fe-2(SO4)(3) in the oxidizing atmosphere (air). It was
     found that the reaction starts at 400 degrees C in isothermal conditions
     and is accompanied by the liberation of Cl-2. The initial reaction
     proceeds in the molar ratio of NaCl:Fe-2(SO4)(3)=3:1. beta-Fe2O3,
     NaFe(SO4)(2), Na3Fe(SO4)(3) and Na(2)So(4) were identified as solid
     products of the initial reaction. At the second stage both the double
     sulfates were transformed into beta-Fe2O3 and Na2SO4, the gaseous SO3
     was liberated simultaneously. Thermally less stable NaFe(SO4)(2)
     decomposes before Na3Fe(SO4)(3). The hexagonal alpha-Fe2O3 is formed in
     this process only as the product of the structural transformation of
     beta-Fe2O3. This beta-alpha transformation accompanies both the initial
     reaction and the secondary conversions of the intermediates. The
     Mossbauer parameters of the reaction products are enlisted.,
  ISBN = 0-7923-5640-3,
  Unique-ID = ISI:000081412500005,
  

1997

• R. Zboril, F. Grambal, D. Krausova, and M. Maslan, "Mossbauer study of thermal conversion of FeSO4 center dot 7H(2)O," CZECHOSLOVAK JOURNAL OF PHYSICS, vol. 47, iss. 5, pp. 565-569, 1997.
  [Bibtex]

  @article ISI:A1997XC91900014,
  Author = Zboril, R and Grambal, F and Krausova, D and Maslan, M,
  Title = Mossbauer study of thermal conversion of FeSO4 center dot 7H(2)O,
  Journal = CZECHOSLOVAK JOURNAL OF PHYSICS,
  Year = 1997,
  Volume = 47,
  Number = 5,
  Pages = 565-569,
  Month = MAY,
  Note = International Colloquium on Mossbauer Spectroscopy in Materials Science
     (MSMS96), LEDNICE, CZECH REPUBLIC, SEP, 1996,
  Abstract = The aim of this study was to identify intermediary products and study of
     the oxidation level of FeSO4 . 7H(2)O in the temperature region from 200
     to 600 degrees C. The knowledge of the reaction process in this
     temperature region is important for the optimisation of the technology
     used in the red pigment manufacture.,
  DOI = 10.1023/A:1021219709276,
  ISSN = 0011-4626,
  Unique-ID = ISI:A1997XC91900014,