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Head of the Division:
Assoc. Prof. Libor Kvítek, CSc.
About the group:
The group works on nanocrystalline metals, particularly those based on iron and noble metals. The chief applied focus includes the use of nanoiron for in situ groundwater treatment technologies (as part of the EU Seventh Framework Programme “Taking Nanotechnological Remediation Processes from Lab Scale to End User Applications for the Restoration of a Clean Environment FP7-NMP“ – 2011108), as well as the use of nanosilver in antimicrobial technologies and the application of metal nanoparticles in catalysis. The group also develops materials and composites for application in surface enhanced Raman spectroscopy, particularly for determining substances of medicinal value. In the basic research area, the group is working on a comprehensive description of nanometal toxicity, the mechanism responsible for the antibacterial effect of nanosilver and the mechanism of interaction between nano-iron and selected pollutants.
Results highlights
Manoj B. Gawande, Yukti Monga, Radek Zbořil, R.K. Sharma: Silica-decorated magnetic nanocomposites for catalytic applications. Coord. Chem. Rev., vol. 288, pp. 118-143, 2015.
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Anuj K. Rathi, Manoj B. Gawande, Radek Zbořil, Rajender S. Varma: “Microwave-assisted synthesis – Catalytic applications in aqueous media”, Coord. Chem. Rev., vol. 291, pp. 68-94, 2015.
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Jana Soukupova, Radek Zbořil, Ivo Medřík, Jan Filip, Klára Šafářova, Radim Ledl, Miroslav Mashlan, Jaroslav Nosek , Miroslav Černík: Highly concentrated, reactive and stable dispersion of zero-valent iron nanoparticles: Direct surface modification and site application. Chem. Eng. J., vol. 262, pp. 813-822, 2015.
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Anand S. Burange, Manoj B. Gawande, Frank L. Y. Lam, Radha V. Jayaramd, Rafael Luque: “Heterogeneously catalyzed strategies for the deconstruction of high density polyethylene: plastic waste valorisation to fuels”, Green Chem., vol. 17, pp. 146-156, 2015.
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Robert Prucek, Jiří Tuček, Jan Kolařík, Ivana Hušková, Jan Filip, Rajender S. Varma, Virender K. Sharma, Radek Zbořil: “Ferrate(VI)-Prompted Removal of Metals in Aqueous Media: Mechanistic Delineation of Enhanced Efficiency via Metal Entrenchment in Magnetic Oxides”, Environ. Sci. Technol., vol. 49, iss. 4, pp. 2319-2327, 2015.
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Manoj B. Gawande, Anuj K. Rathi, Jiří Tuček, Klára Šafářova, Nenad Bundaleski, Orlando M. N. D. Teodoro, Libor Kvítek, Rajender S. Varma, Radek Zbořil: “Magnetic gold nanocatalyst (nanocat-Fe–Au): catalytic applications for the oxidative esterification and hydrogen transfer reactions”, Green Chem., vol. 16, pp. 4137-4143, 2014.
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Anna Balzerová, Ariana Fargašová, Zdenka Marková, Václav Ranc, Radek Zbořil: “Magnetically-Assisted Surface Enhanced Raman Spectroscopy (MASERS) for Label-Free Determination of Human Immunoglobulin G (IgG) in Blood Using Fe3O4@Ag Nanocomposite”. Anal. Chem., vol. 86, iss. 22, pp. 11107-11114, 2014.
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M. B. Gawande, S. N. Shelke, R. Zboril and R. S. Varma: “Microwave-Assisted Chemistry: Synthetic Applications for Rapid Assembly of Nanomaterials and Organics”, ACC. CHEM. RES., vol. 47, iss. 4, pp. 1338-1348, 2014.
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Kočí, K.; Matějová, L.; Kozák, O.; Čapek, L.; Valeš, V.; Reli, M.; Praus, P.; Šafářová, K.; Kotarba, A.; Obalová, L.: “ZnS/MMT nanocomposites: The effect of ZnS loading in MMT on the photocatalytic reduction of carbon dioxide”, Appl. Catal. B Environ. 2014, 158-159, 410–417.
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Václav Ranc, Zdenka Marková, Marian Hajduch, Robert Prucek, Libor Kvítek, Josef Kašlík, Klára Šafářova, Radek Zbořil: “Magnetically Assisted Surface-Enhanced Raman Scattering Selective Determination of Dopamine in an Artificial Cerebrospinal Fluid and a Mouse Striatum Using Fe3O4/Ag Nanocomposite”, Anal. Chem. Vol. 86, iss. 6, pp. 2939-2946, 2014.
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M. B. Gawande, V. D. B. Bonifácio, R. Luque, P. S. Branco and R. S. Varma: “Solvent-Free and Catalysts-Free Chemistry: A Benign Pathway to Sustainability”, CHEMSUSCHEM, vol. 7, iss. 1, pp. 24-44, 2014.
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Robert Prucek, Jiří Tuček, Jan Kolařík, Jan Filip, Zdenek Marušák, Virender K. Sharma, Radek Zbořil: “Ferrate(VI)-Induced Arsenite and Arsenate Removal by In Situ Structural Incorporation into Magnetic Iron(III) Oxide Nanoparticles”, Environ. Sci. Technol., vol. 47, iss. 7, pp. 3283–3292, 2013.
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Stefanie Krajewski, Robert Prucek, Ales Panacek, Meltem Avci-Adali, Andrea Nolte, Andreas Straub, Radek Zboril, Hans P. Wendel, Libor Kvitek: “Hemocompatibility evaluation of different silver nanoparticle concentrations employing a modified Chandler-loop in vitro assay on human blood”, Acta Biomaterialia, vol. 9, pp. 7460-7468, 2013.
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Metal nanomaterials group
Water dispersion of silver nanoparticles exhibits a typical orange-yellow colour which vanishes as the size of nanoparticles exceeds above 100 nm.
Electron microscopic image of silver nanoparticles synthesized by the modified Tollens method.
Examples of organisms for which the toxicity of silver nanoparticles has been tested: Paramecium caudatum (left), Drosophila melanogaste (middle) and Scenedesmus subspicatus (right).
Schematic representation of dopamine binding to magnetite@carboxymethyl chitosan@Ag@Fe-nitriloacetic acid nanocomposite used for selective determination of dopamine.
Maghemite-supported gold nanocatalyst for the oxidative esterification of aldehydes and the reduction of aromatic nitro compounds under mild conditions.
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