Visible-light photocatalytic activity of nitrogen-doped TiO2 thin film prepared by pulsed laser deposition

被引：95

作者：

Zhao, Lei ^{[1
]}

Jiang, Qing ^{[1
]}

Lian, Jianshe ^{[1
]}

机构：

[1] Jilin Univ, Minist Educ, Coll Mat Sci & Engn, Key Lab Automobile Mat, Changchun 130025, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 15期

关键词：

visible-light photocatalytic activity; TiO2 thin film; Nitrogen; doped; Pulsed laser deposition;

D O I：

10.1016/j.apsusc.2008.01.069

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：

Nitrogen-doped titanium dioxide (TiO2-xNx) thin films have been prepared by pulse laser deposition on quartz glass substrates by ablated titanium dioxide ( rutile) target in nitrogen atmosphere. The x value ( nitrogen concentration) is 0.567 as determined by X- ray photoelectron spectroscopy measurements. UV-vis spectroscopy measurements revealed two characteristic deep levels located at 1.0 and 2.5 eV below the conduction band. The 1.0 eV level is attributable to the O vacancy state and the 2.5 eV level is introduced by N doping, which contributes to narrowing the band-gap by mixing with the O2p valence band. The enhanced degradation efficiency in a broad visible-light range was observed from the degradation of methylene blue and methylene orange by the TiO2-xNx film. (c) 2008 Elsevier B. V. All rights reserved.

引用

页码：4620 / 4625

页数：6

共 34 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].