Synergistic effect of two surface complexes in enhancing visible-light photocatalytic activity of titanium dioxide

被引：49
作者：
Li, Ming [1 ]
Hong, Zhanglian [1 ]
Fang, Yanan [1 ]
Huang, Fuqiang [2 ]
机构：
[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2008年 / 43卷 / 8-9期
关键词：
oxides; semiconductors; chemical synthesis; catalytic properties;
D O I：
10.1016/j.materresbull.2007.08.030
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Titanium dioxide nanoparticles with high visible-light photocatalytic activity were prepared by the solvothermal method with titanium tetra-n-butoxide as starting material in acetone. The products were characterized by XRD, TEM, TG-DTA, DRS and FT-IR. DRS results showed that the products, irrespective of their anatase or amorphous forms, had significant absorption in the visible-light region. The photocatalytic degradation of methyl orange solutions revealed that the anatase products had a higher visible-light photocatalytic activity than the amorphous ones. It is suggested that two surface complexes, formed between titanium dioxide and methyl orange molecules, and formed between titanium dioxide and the new organic moieties from the autoclaving, contribute synergistically to the high visible-light photocatalytic efficiency. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2179 / 2186
页数：8
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