文献类型：期刊文献

英文题名：Properties of carbon and iron modified TiO₂ photocatalyst synthesized at low temperature and photodegradation of acid orange 7 under visible light

作者：Wu, Yongmei[1,2];Zhang, Jinlong[1,2,3];Xiao, Ling[1,2];Chen, Feng[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]Guizhou Normal Univ, Sch Chem & Mat Sci, Guiyang 550001, Peoples R China

年份：2010

卷号：256

期号：13

起止页码：4260

外文期刊名：APPLIED SURFACE SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000276492300036)】；

基金：This work has been supported by National Nature Science Foundation of China (20773039, 20977030); National Basic Research Program of China (973 Program, 2007CB613301, 2010CB732306); the Ministry of Science and Technology of China (2006AA06Z379, 2006DFA52710) and "The Zhuoyue Project'' of East China University of Science and Technology.

语种：英文

外文关键词：TiO2; Modification; Visible light; Photocatalyst; Acid orange 7

摘要：The nanoparticles of TiO2 modified with carbon and iron were synthesized by sol-gel followed solvothermal method at low temperature. Its chemical composition and optical absorption were investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence emission spectroscopy (PL), UV-vis absorption spectroscopy, and electron paramagnetic resonance (EPR). It was found that carbon and iron modification causes the absorption edge of TiO2 to shift the visible light region. Fe(III) cation could be doped into the matrix of TiO2, by which could hinder the recombination rate of excited electrons/holes. Superior photocatalytic activity of TiO2 modified with carbon and iron was observed for the decomposition of acid orange 7 (AO7) under visible light irradiation. The synergistic effects of carbon and iron in modified TiO2 nanoparticles were responsible for improving visible light photocatalytic activity. (C) 2010 Elsevier B. V. All rights reserved.