Drastically enhanced photocatalytic activity in nitrogen doped mesoporous TiO2 with abundant surface states

被引：72

作者：

Liu, Gang ^{[1
,2
,3
]}

Wang, Xuewen ^{[1
]}

Wang, Lianzhou ^{[2
,3
]}

Chen, Zhigang ^{[1
]}

Li, Feng ^{[1
]}

Lu, Gao Qing ^{[2
,3
]}

Cheng, Hui-Ming ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Mat Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Univ Queensland, Sch Engn, ARC Ctr Excellence Funct Nanomat, Brisbane, Qld 4072, Australia

[3] Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2009年 / 334卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

TiO2; Mesoporous; Surface states; Nitrogen doping; Photoluminescence; VISIBLE-LIGHT PHOTOCATALYSIS; TITANIUM-DIOXIDE; PHOTOACTIVITY; FILMS;

D O I：

10.1016/j.jcis.2009.02.047

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 mesoporous TiO2 Was prepared via a modified two-step hydrothermal route. In contrast to undoped mesoporous TiO2, nitrogen doped mesoporous TiO2 has superior photocatalytic activity under both UV and visible light irradiation. Photoluminescence spectra reveal that nitrogen doped mesoporous TiO2 possesses abundant surface states, which can play a vital role in trapping photoinduced carriers as evidenced by photoelectrochemical process and prolonging the lifetime of the carriers. The remarkably enhanced photocatalytic activity in nitrogen doped mesoporous TiO2 is attributed to the generated abundant Surface states. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：171 / 175

页数：5

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