Decomposition of methylene blue with photocatalytic TiO2 thin films deposited by pulsed-laser deposition

被引：0
|
作者：
Okoshi, M [1 ]
Kosuge, Y [1 ]
Inoue, N [1 ]
Yamashita, T [1 ]
机构：
[1] Natl Def Acad, Dept Elect & Elect Engn, Yokosuka, Kanagawa 2398686, Japan
来源：
THIRD INTERNATIONAL SYMPOSIUM ON LASER PRECISION MICROFABRICATION | 2003年 / 4830卷
关键词：
pulsed laser deposition (PLD); photocatalytic effect; photocatalysis; titanium dioxide (TiO2); anatase; droplet; surface roughness; methylene-blue;
D O I：
10.1117/12.486577
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：
Photocatalytic titanium dioxide (TiO2) thin films with large specific surface area were deposited on Si wafers by pulsed laser deposition with sintered TiO2 targets in oxygen gas atmosphere. Angular distributions of the number of droplets and the film thickness were examined. The surface roughness and the film thickness depended on the oxygen gas pressure. Photocatalytic effect of the films deposited at various substrate temperatures was evaluated by photobleaching of methylene-blue aqueous solution. The TiO2 film deposited at the substrate temperature of 250degreesC was anatase-type crystal and this film indicated the highest photocatalytic effect.
引用
收藏
页码：265 / 269
页数：5
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