Preparation of porous titania film by modified sol-gel method and its application to photocatalyst

被引：73

作者：

Yusuf, MM ^{[1
]}

Imai, H ^{[1
]}

Hirashima, H ^{[1
]}

机构：

[1] Keio Univ, Fac Sci & Technol, Kohoku Ku, Yokohama, Kanagawa 2238522, Japan

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2002年 / 25卷 / 01期

关键词：

mesoporous films; surfactant templating; sol-gel method; anatase; photocatalyst;

D O I：

10.1023/A:1016045111857

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Sol-Gel derived mesoporous titania films with controlled pore sizes were prepared by surfactant templating. The coating sol was obtained by hydrolysis of Ti(OC4H9)(4) in ethanol/HCl solution. The gel films, prepared by spin coating on glass substrate, were dried after immersion in surfactant solutions under an atmospheric pressure. The porous films of anatase with columnar and rectangular structure were obtained after annealing at 500degreesC. The annealed films are transparent and 80-140 nm in thickness. Refractive indices of the films with surfactant immersion were 10-20% lower than those of the films without immersion. The spacing between the columns or rectangular grains and the grain shape were found to depend on the surfactant species. The pohoto-catalytic activity of the films for the oxidation of NOx was improved by the surfactant modification.

引用

页码：65 / 74

页数：10

共 31 条

[1]

PHOTOCATALYTIC HYDROGENATION OF CH3CCH WITH H2O ON SMALL-PARTICLE TIO2 - SIZE QUANTIZATION EFFECTS AND REACTION INTERMEDIATES [J].