Enhanced photocatalytic activity of silver-doped nanoparticulate TiO2 thin films with respect to the method of doping
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- 作者：S. Kment ; H. Kmentova ; Z. Hubicka ; J. Olejnicek…
- 关键词：Thin layers ; TiO2 ; Silver doping ; Photocatalysis ; Photoelectrochemistry
- 刊名：Research on Chemical Intermediates
- 出版年：2015
- 出版时间：December 2015
- 年：2015
- 卷：41
- 期：12
- 页码：9343-9355
- 全文大小：1,136 KB
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28.L. Vitos, A.V. Buban, H.L. Sk - 作者单位：S. Kment (1)
H. Kmentova (2)
Z. Hubicka (1)
J. Olejnicek (1)
M. Cada (1)
J. Krysa (3)
1. Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21, Prague 8, Czech Republic
2. Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, Rozvojová 135, 165 02, Prague 6, Czech Republic
3. University of Chemical Technology Prague, Technická 5, 166 28, Prague 6, Czech Republic - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Catalysis
Physical Chemistry
Inorganic Chemistry - 出版者：Springer Netherlands
- ISSN：1568-5675
文摘
A nanoparticle photocatalysts based on silver-doped titanium dioxide were synthesized using a modified sol–gel route and also a dip-and-pull step photochemical method. The catalysts were characterized by UV/Vis absorption spectroscopy, atomic force microscopy, X-ray photoelectron spectroscopy, electron microprobe analysis, and Raman spectroscopy. The effects of the experimental parameters on the photoreactivity of the catalysts were evaluated for the decolorization of Rhodamine B in water and by photoelectrochemistry. The activity results show that silver doping significantly promotes the photoreactivity of the titanium dioxide catalyst with some phase transformation from anatase to brookite. The enhanced photoactivity of new nanoparticulate photocatalysts is predominantly attributable to an improvement in crystallinity, band gap lowering, the nature of precursor materials used, and also the method of doping. Keywords Thin layers TiO2 Silver doping Photocatalysis Photoelectrochemistry