Photocatalytic activity of TiO2 nanotube layers coated with Ag and Pt

被引：1

作者：

Zhang, J. L. ^{[1
,2
]}

Yuan, Z. F. ^{[1
]}

Xu, B. S. ^{[1
]}

Fu, P. F. ^{[3
]}

机构：

[1] Peking Univ, Dept Energy & Resources Engn, Beijing 100871, Peoples R China

[2] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China

[3] Beijing Union Univ, Dept Environm, Coll Arts & Sci, Beijing 100083, Peoples R China

来源：

ADVANCES IN APPLIED CERAMICS | 2010年 / 109卷 / 06期

关键词：

TiO2; NTs; Pt and Ag deposits; Photocatalytic activity; Reaction constant; MODIFIED TITANIUM-DIOXIDE; THIN-FILMS; EFFICIENT PHOTODEGRADATION; RECOMBINATION DYNAMICS; TA6V ALLOY; SILVER; DEGRADATION; PARTICLES; PLATINUM; MEDIA;

D O I：

10.1179/174367510X12677121374348

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Thin films of anatase TiO2 nanotube arrays (TiO2 NTs) were prepared in this study. Pt and Ag were coated on the TiO2 NTs films, which intend to increase the photocatalytic activity under ultraviolet-visible (UV-vis) irradiation. The phase and structure of the films were investigated by X-ray diffraction and scanning electron microscopy. Photocatalytic activity was tested by UV-vis absorption spectroscopy and showed that UV-vis light absorption of the films was remarkably improved by coated Ag and Pt by 72% and 183% respectively. The photocatalytic activities of the films towards degraded methyl orange and HCHO were compared and were all found to follow the sequence Pt/TiO2 NTs. Ag/TiO2 NTs. TiO2 NTs. It was also found that the kinetics of HCHO photocatalytic degradation by the films fits the first order reaction model better and has higher efficiency than that of the methyl orange photocatalytic degradation by the same films.

引用

页码：362 / 366

页数：5

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