V and N co-doped nanocrystal anatase TiO2 photocatalysts with enhanced photocatalytic activity under visible light irradiation

被引：140

作者：

Gu, De-En ^{[1
]}

Yang, Bang-Chao ^{[1
]}

Hu, Yong-Da ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Sch Microelect & Solid State Elect, Chengdu 610054, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 06期

关键词：

titanium dioxide; co-doping; vanadium and nitrogen; visible light; photocatalytic activity;

D O I：

10.1016/j.catcom.2007.12.014

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：

Vanadium and nitrogen co-doped TiO2 nanocrystal (4-5 nm) photocatalysts were prepared through direct nitridation of the controlled hydrolysis product of Tetrabutyl titanate in V (IV) ions solution. The catalysts were characterized by XRD, BET surface area, XPS, and UV-vis diffuse reflectance spectra. The co-doped TiO2 nanocrystal has a narrower band gap of 2.76 eV than V-doped TiO2 (2.91 eV) and N-doped TiO2 (2.92 eV). The co-doped TiO2 pholocatalysts show enhanced photocatalytic activity for the degradation of methylene blue under visible light irradiation (lambda > 420 nm) compared with V-doped TiO2 and N-doped TiO2, (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1472 / 1476

页数：5

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