Size control of titanium oxide sheets by regulating catalysis in a catalytic sol-gel process and their UV absorption properties

被引：21

作者：

Matsumoto, T ^{[1
]}

Murakami, Y ^{[1
]}

Takasu, Y ^{[1
]}

机构：

[1] Shinshu Univ, Fac Text Sci & Technol, Dept Fine Mat Engn, Ueda, Nagano 3868567, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2000年 / 104卷 / 09期

关键词：

D O I：

10.1021/jp990586f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Catalysis in a sol-gel process of titanium alkoxide was switched off to control the size of sheetlike particles of a resulting titanium oxide. The oxide growth was suspended by adding acetic acid, which regulated the catalytic activity of ammonium acetate. An ultraviolet-visible absorption band depended on the size of sheetlike particles. A lower energy region appeared for the larger size (> 1 mu m) of sheetlike particles but not for the smaller one. It is probably due to a bridging bidentate of acetate on the flat surface of titanium oxide particles.

引用

页码：1916 / 1920

页数：5