Formation of anatase nanocrystals in sol-gel derived TiO2-SiO2 thin films with hot water treatment

被引：64

作者：

Kotani, Y ^{[1
]}

Matsuda, A

Tatsumisago, M

Minami, T

Umezawa, T

Kogure, T

机构：

[1] Univ Osaka Prefecture, Grad Sch Engn, Dept Appl Mat Sci, Osaka 5998531, Japan

[2] Univ Tokyo, Grad Sch Sci, Inst Mineral, Bunkyo Ku, Tokyo 1130033, Japan

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2000年 / 19卷 / 1-3期

关键词：

anatase; nanocrystals; hot water treatment; poly(ethylene glycol); TiO2-SiO2;

D O I：

10.1023/A:1008709210723

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：

We have successfully prepared transparent and porous anatase nanocrystals-dispersed films by treating the sol-gel derived TiO2-SiO2 films containing poly(ethylene glycol), PEG, with hot water. This process was done at temperatures lower than 100 degreesC under atmospheric pressure, and thus anatase nanocrystals-dispersed films can be formed on various kinds of substrates including organic polymers with poor heat resistance. The changes in structure and composition of the TiO2-SiO2 gel films with hot water treatment were related to the formation process of anatase nanocrystals in the TiO2-SiO2 gel films with hot water treatment. The formation of anatase nanocrystals was found to proceed to hydrolysis of Si-O-Ti bonds and dissolution of SiO2 component. In addition, porous film structure formed by leaching of PEG with hot water treatment led to homogenous dispersion of anatase nonocrystals in the films.

引用

页码：585 / 588

页数：4

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