Preparation of ultra fine TiO2 particles dispersible in organic solvents and their photocatalytic properties

被引：21

作者：

Murakata, T ^{[1
]}

Yamamoto, R ^{[1
]}

Yoshida, Y ^{[1
]}

Hinohara, M ^{[1
]}

Ogata, T ^{[1
]}

Sato, S ^{[1
]}

机构：

[1] Yamagata Univ, Dept Mat Sci & Engn, Yonezawa, Yamagata 992, Japan

来源：

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 1998年 / 31卷 / 01期

关键词：

titanium oxide; organic colloidal solution; absorption spectrum; ESR spectrum; photocatalytic reaction;

D O I：

10.1252/jcej.31.21

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Ultra fine TiO2 particles which dispersed in various organic solvents were synthesized through hydrolysis of a titanium alkoxide to form colloidal TiO2 particles, followed by modification of the colloidal particles with a hydrophobic coupling agent, The organic solvent solutions of the synthesized TiO2 particles were transparent and had high colloidal stability. Photochemical properties of the TiO2 particles in organic solvents were studied: namely how Ti3+ species were formed in the particles and accumulated in them; and how the particles were photocatalytically active for oxidation of I- and reduction of methylene blue and Ag+. From comparative studies of the photocatalytic reactions, the TiO2 particles are found to have higher photocatalytic activity than commercially available anatase and rutile ponders.

引用

页码：21 / 28

页数：8

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