Photocatalytic efficiency enhancement of plasma-sprayed TiO2 coatings under external bias voltage

被引：6
作者：
Liu, Juntao
Zeng, Yi
Gao, Jianhua
Qian, Weijun
Ding, Chuanxian
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2006年 / 32卷 / 06期
关键词：
TiO2; plasma spraying; photocatalytic efficiency; external bias;
D O I：
10.1016/j.ceramint.2005.05.001
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
TiO2 coatings were prepared on stainless steel by plasma spraying. The photocatalytic efficiencies of as-sprayed coatings were evaluated through the photo mineralization of methylene blue. External bias voltages applied to the coatings have shown an enhancement of the photocatalytic efficiency reducing the recombination of photogenerated electron-hole pairs. A more efficient photocatalytic reaction would take place when a higher external bias is imposed, because the force of recombination suppression is strengthened when the external bias is higher. The highest photocatalytic efficiency enhancement was about 46%. (C) 2005 Elsevier Ltd and Techna Group S.M. All rights reserved.
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页码：719 / 721
页数：3
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