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Antibacterial effect of silver modified TiO2/PECVD films

  • Topical issue: 23rd Symposium on Plasma Physics and Technology
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Abstract

This paper deals with photocatalytic activity of silver treated TiO2 films. The TiO2 films were deposited on glass substrates by plasma enhanced chemical vapor deposition (PECVD) in a vacuum reactor with radio frequency (RF) low temperature plasma discharge in the mixture of oxygen and titanium isopropoxide vapors (TTIP). The depositions were performed under different deposition conditions. Subsequently, the surface of TiO2 films was modified by deposition of silver nanoparticles. Photocatalytic activity of both silver modified and unmodified TiO2 films was determined by decomposition of the model organic matter (acid orange 7). Selected TiO2 samples were used for tests of antibacterial activity. These tests were performed on Gram-negative bacteria Escherichia coli. The results clearly proved that presence of silver clusters resulted in enhancement of the photocatalytic activity, which was up to four times higher than that for pure TiO2 films.

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Authors and Affiliations

  1. Department of material science, Technical University of Liberec, Studentská 2, 46117, Liberec, Czech Republic

    P. Hájková, P. Špatenka & A. Kolouch

  2. Department of Physics, University of South Bohemia, Jeronýmova 10, 37001, České Budějovice, Czech Republic

    P. Špatenka

  3. Fachhochschule Hof, University of Applied Sciences Hof, Alfons-Goppel-Platz 1, 95028, Hof, Germany

    J. Krumeich

  4. Department of Chemistry, Technical University of Liberec, Studentská 2, 46117, Liberec, Czech Republic

    P. Exnar

  5. Department of Macromolecular Physics, Charles University in Prague, V Holešovičkách 2, 18200, Praha, Czech Republic

    J. Matoušek

  6. Regional Hospital Liberec, Husova, 46001, Liberec, Czech Republic

    P. Kočí

Authors
  1. P. Hájková
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  2. P. Špatenka
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  3. J. Krumeich
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  4. P. Exnar
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  5. A. Kolouch
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  6. J. Matoušek
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  7. P. Kočí
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Correspondence to P. Hájková.

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Hájková, P., Špatenka, P., Krumeich, J. et al. Antibacterial effect of silver modified TiO2/PECVD films. Eur. Phys. J. D 54, 189–193 (2009). https://doi.org/10.1140/epjd/e2009-00087-7

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  • DOI: https://doi.org/10.1140/epjd/e2009-00087-7

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