IR and XPS investigation of visible-light photocatalysis -: Nitrogen-carbon-doped TiO2 film

被引：176
|
作者：
Yang, Jing [1 ]
Bai, Haizan [1 ]
Tan, Xingchen [1 ]
Lian, Jianshe [1 ]
机构：
[1] Jilin Univ Technol, Coll Mat Sci & Engn, Key Lab Automobile Mat, Minist Educ, Changchun 130025, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2006年 / 253卷 / 04期
关键词：
nitrogen-carbon-doped TiO2; visible-light; oxygen vacancy; photocatalysis;
D O I：
10.1016/j.apsusc.2006.03.078
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：
To use solar irradiation or interior lighting efficiently, we sought a photocatalyst with high reactivity under visible light. Nitrogen and carbon doping TiO2-x-yNxCy films were obtained by heating the TiO2 gel in an ionized N-2 gas and then were calcined at 500 degrees C. The TiO2-x-yNxCy films have revealed an improvement over the TiO2 films under visible light (wavelength, 500 nm) in optical absorption and photocatalytic activity such as photodegradation of methyl orange. X-ray photoemission spectroscopy, infrared spectrum and UV-visible (UV-vis) spectroscopy were used to find the difference of two kinds of films. Nitrogen and carbon doped into substitutional sites of TiO2 has been proven to be indispensable for band-gap narrowing and photocatalytic activity. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1988 / 1994
页数：7
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