Visible-light photocatalytic behavior of two different N-doped TiO2

被引：39
|
作者：
Zhang, Jiwei [1 ]
Wang, Yan [1 ]
Jin, Zhensheng [1 ]
Wu, Zhishen [1 ]
Zhang, Zhijun [1 ]
机构：
[1] Henan Univ, Key Lab Special Funct Mat, Kaifeng 475001, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 15期
关键词：
nanotube titanic acid; N-doped titanium dioxide; visible-light photocatalysis; photoactive center;
D O I：
10.1016/j.apsusc.2008.01.020
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：
The visible-light photocatalytic behavior of two different N-doped TiO(2) correlated with their physicochemical properties was investigated. The results show that N-TiO(2)-1, prepared by a novel TiO(2) with unique defect structure, is more active in visible-light photocatalytic oxidation of C(3)H(6) than N-TiO(2)-2, prepared by standard P25-TiO(2) (Degussa). The specific rate constant of the former is ca. 5 times that of the latter. One model of photoactive center (V(o)(center dot)-NO-Ti) in anatase phase responsible for the visible- light photocatalytic activity is proposed. The higher the V(o)(center dot)-NO-Ti concentration is, the better the visible- light photocatalytic activity is. (c) 2008 Elsevier B.V. All rights reserved.
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页码：4462 / 4466
页数：5
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