Strong light scattering in macroporous TiO2 monoliths induced by phase separation

被引：38

作者：

Fujita, K ^{[1
]}

Konishi, J ^{[1
]}

Nakanishi, K ^{[1
]}

Hirao, K ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Chem Mat, Nishikyo Ku, Kyoto 6158510, Japan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 23期

关键词：

D O I：

10.1063/1.1823596

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Macroporous titania (TiO2) monoliths have been prepared from systems containing titania colloid and poly(ethylene oxide) using a sol-gel method, and the light-scattering properties have been investigated by means of coherent backscattering. Three-dimensionally interconnected macroporous morphology is obtained by inducing the phase separation parallel to the sol-gel transition. The crystal structure of TiO2 gel is transformed from anatase to rutile through the heat treatment above 900 degreesC, while the macroporous morphology remains unchanged. We show that the rutile-type TiO2-based macropurous monoliths are strongly scattering media for visible light. (C) 2004 American Institute of Physics.

引用

页码：5595 / 5597

页数：3

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