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

被引：152
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
来源：
APPLIED SURFACE SCIENCE | 2010年 / 256卷 / 13期
关键词：
TiO2; Modification; Visible light; Photocatalyst; Acid orange 7; CONTAINING TITANIUM-DIOXIDE; SOL-GEL METHOD; CODOPED TIO2; DOPED TIO2; FE-C-TIO2; PHOTOCATALYSTS; NITROGEN; POWDERS; DEGRADATION; FE; UV;
D O I：
10.1016/j.apsusc.2010.02.012
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：
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.
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收藏
页码：4260 / 4268
页数：9
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