The structural and photoluminescence studies related to the surface of the TiO2 sol prepared by wet chemical method

被引：57

作者：

Liu, Baoshun ^{[1
]}

Zhao, Xiujian ^{[1
]}

Wen, Liping ^{[1
]}

机构：

[1] Wuhan Univ Technol, Minist Educ, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2006年 / 134卷 / 01期

关键词：

electron-hole pairs; surface electronic structure; PL spectra; TiO2; sol;

D O I：

10.1016/j.mseb.2006.06.052

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The stable anatase TiO2 sol was prepared firstly. The crystallinity and morphology were investigated by XRD, TEM and Raman patterns. The photo-luminescence was used to study the surface electronic structure of TiO2 sol with respect to the particle size, UV illumination, pH and electron acceptor addition. The PL spectra show that the photoinduced carriers are easy to transfer to surface in the case of small particles; the acidic environment can destroy the surface electronic structure because the surface recombination is quenched, but the bulk recombination is still clearer. The PL spectra also show that the UV illumination can obviously change surface electronic structure; the Ag+ addition can increase electron transportation to Ag+. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：27 / 31

页数：5

共 21 条

[1] The photocatalytic oxidation of water to O2 over pure CeO2, WO3, and TiO2 using Fe3+ and Ce4+ as electron acceptors [J].