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

被引：476

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

相关论文

共 31 条

[1] The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation [J].

Anpo, M ;

Takeuchi, M .

JOURNAL OF CATALYSIS, 2003, 216 (1-2) :505-516

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

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[3]

DECK PD, 1992, MET FINISH, V90, P29

[4] Investigations of metal-doped titanium dioxide photocatalysts [J].

Dvoranová, D ;

Brezová, V ;

Mazúr, M ;

Malati, MA .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 37 (02) :91-105

[5] Spectral dependencies of the quantum yield of photochemical processes on the surface of nano-/microparticulates of wide-band-gap metal oxides. 1. Theoretical approach [J].

Emeline, AV ;

Ryabchuk, VK ;

Serpone, N .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (08) :1316-1324

[6] Spectral dependencies of the quantum yield of photochemical processes on the surface of wide band gap solids. 3. Gas/solid systems [J].

Emeline, AV ;

Kuzmin, GN ;

Purevdorj, D ;

Ryabchuk, VK ;

Serpone, N .

JOURNAL OF PHYSICAL CHEMISTRY B, 2000, 104 (14) :2989-2999

[7] Photostimulated generation of defects and surface reactions on a series of wide band gap metal-oxide solids [J].

Emeline, AV ;

Kataeva, GV ;

Ryabchuk, VK ;

Serpone, N .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (43) :9190-9199

[8] Nanosize Ti-W mixed oxides:: Effect of doping level in the photocatalytic degradation of toluene using sunlight-type excitation [J].

Fuerte, A ;

Hernández-Alonso, MD ;

Maira, AJ ;

Martínez-Arias, A ;

Fernández-García, M ;

Conesa, JC ;

Soria, J ;

Munuera, G .

JOURNAL OF CATALYSIS, 2002, 212 (01) :1-9

[9]

Fujishima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2

[10] PHOTOELECTRONIC PROCESSES IN RUTILE [J].

GHOSH, AK ;

WAKIM, FG ;

ADDISS, RR .

PHYSICAL REVIEW, 1969, 184 (03) :979-&

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