Enhanced Photoelectrochemical Performance of Nanocomposite Film Fabricated by Self-Assembly of Titanium Dioxide and Polyoxometalates

被引：81

作者：

Sun, Zhixia ^{[1
]}

Xu, Lin ^{[1
]}

Guo, Weihua ^{[1
]}

Xu, Bingbing ^{[1
]}

Liu, Shuping ^{[1
]}

Li, Fengyan ^{[1
]}

机构：

[1] NE Normal Univ, Coll Chem, Minist Educ, Kev Lab Polyoxometalates Sci, Changchun 130024, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 11期

关键词：

THIN-FILM; PHOTOCATALYTIC ACTIVITY; TIO2; NANOSTRUCTURES; PHOTO; ELECTRODE; NANOPARTICLES; CRYSTALLINE; DEGRADATION; MULTILAYERS; NANOTUBES;

D O I：

10.1021/jp910665b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In order to fabricate photoelectrochemical devices, multilayer films composed of positively charged titanium dioxide (TiO2) colloids and anionic tungsto(molybdo)phosphate (PW12 and P2Mo18) or poly(styrenesulfonate) (PSS) have been prepared by the layer-by-layer (LbL) self-assembly method. These films were characterized by UV-vis spectroscopy, IR spectra, and atomic force microscopy. Photocurrent transient measurement Suggested that the photocurrent response of the PW12/TiO2 composite film was highly dependent on Will thickness (viz., the deposited number of layers). Both current-voltage Curves and photocurrent transient measurement demonstrate that the photocurrent and power conversion efficiency of the PW12/TiO2 composite film were markedly enhanced in comparison with that of the P2Mo18/TiO2 film and the PSS/TiO2 film. Furthermore, the PW12/TiO2 composite film also exhibited the most significant pholoelectrooxidation activity for methanol. These results provide valuable information for photovoltaic and photoelectrochemical applications.

引用

页码：5211 / 5216

页数：6

共 42 条

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