Photocatalytic degradation of 4-chlorophenol with combustion synthesized TiO2 under visible light irradiation

被引：110
|
作者：
Cheng, Youping [1 ]
Sun, Hongqi [1 ]
Jin, Wanqin [1 ]
Xu, Nanping [1 ]
机构：
[1] Nanjing Univ Technol, Membrane Sci & Technol Res Ctr, Nanjing 210009, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2007年 / 128卷 / 2-3期
关键词：
photodegradation; combustion; 4-chlorophenol; visible light;
D O I：
10.1016/j.cej.2006.09.009
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Carbon-modified TiO2, catalysts were synthesized from tetrabutyl titanate and glycine by a solution combustion method. The catalysts were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), XPS, UV-vis absorption and photocatalytic degradation of 4-chlorophenol (4-CP). The obtained catalysts show much high activities for degradation of 4-CP than that of Degussa P25 under irradiation at wavelengths longer than 400 nm. Hydroquinone (HQ), benzoquinone (BQ) and hydroxyhydroquinone (HHQ) were found to be the main intermediates of the photocatalytic 4-CP degradation with carbon-modified TiO2 by HPLC measurement. Moreover, the calcination time of synthesized TiO2 catalysts played a significant role in the photocatalytic activity. (c) 2007 Published by Elsevier B.V.
引用
收藏
页码：127 / 133
页数：7
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