In situ XANES studies of CuO/TiO2 thin films during photocatalytic degradation of CHCl3

被引：22

作者：

Hsiung, Tung Li

Wang, H. Paul ^{[1
]}

Lu, Yang-Ming

Hsiao, M. C.

机构：

[1] Natl Cheng Kung Univ, Dept Environm Engn, Tainan 70101, Taiwan

[2] Kun Shan Univ Technol, Dept Elect Engn, Tainan 701, Taiwan

[3] Kun Shan Univ Technol, Dept Environm Engn, Tainan 701, Taiwan

来源：

RADIATION PHYSICS AND CHEMISTRY | 2006年 / 75卷 / 11期

关键词：

TiO2; thin film; XANES; photocatalysis;

D O I：

10.1016/j.radphyschem.2005.11.024

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：

Speciation of titanium in the CuO/TiO2 thin film (synthesized by radio frequency magnetron sputtering) during photocatalytic decomposition of CHCl3 has been studied by in situ X-ray absorption near-edge structural (XANES) spectroscopy. Little perturbation was observed in the Ti K-edge XANES spectra of the CuO/TiO2 during photocatalysis. However, by prolonging the UV/VIS radiation to 90 min, the copper K-edge white line absorbance was enhanced suggesting electron donation (from the encapsulated TiO2) to surface CuO, which was also observed by electron spectroscopy for chemical analysis (ESCA) spectroscopy. (c) 2006 Elsevier Ltd. All rights reserved.

引用

收藏

页码：2054 / 2057

页数：4

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