Visible-light-driven photocatalysis on fluorine-doped TIO2 powders by the creation of surface oxygen vacancies

被引：473
作者：
Li, D
Haneda, H
Labhsetwar, NK
Hishita, S
Ohashi, N
机构：
[1] NIMS, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan
[2] Natl Environm Engn Res Inst, Environm Mat Unit, Nagpur 440020, Maharashtra, India
来源：
CHEMICAL PHYSICS LETTERS | 2005年 / 401卷 / 4-6期
关键词：
D O I：
10.1016/j.cplett.2004.11.126
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：
F-doped TiO2 (FT) powders were prepared by spray pyrolysis from an aqueous solution of H2TiF6. These FT powders demonstrated very high visible-light (Vis) photocatalytic activities for decompositions of both acetaldehyde and trichloroethylene. although their UV-Vis spectra indicated that F-doping had less effect on the optical absorption property of bulk TiO2.. However. photoluminescence (PL) spectra revealed that two kinds of oxygen vacancies (F and F+ centers) were formed by F-doping. The appearance of Vis photocatalytic activity for FT powders was ascribed to the creation of these oxygen vacancies. (C) 2004 Elsevier B.V. All rights reserved.
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页码：579 / 584
页数：6
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