Fabrication of titania films by sol-gel method using transparent colloidal aqueous solutions of anatase nanocrystals

被引:11
|
作者
Ban, Takayuki [1 ]
Tanaka, Yusuke [1 ]
Ohya, Yutaka [1 ]
机构
[1] Gifu Univ, Dept Mat Sci & Technol, Gifu 5011193, Japan
基金
日本学术振兴会;
关键词
Titanium oxide; Anatase; Sol-gel deposition; Porous films; Colloidal solution; Nanocrystalline films; Scanning electron microscopy; Transmission electron microscopy; TIO2; FILMS; THIN-FILMS; SILICA FILMS; BLOCK;
D O I
10.1016/j.tsf.2010.12.247
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The fabrication of dense or porous titania films by the sot-gel method using anatase colloidal solutions was examined. When anatase colloidal solutions without surfactants were deposited on a substrate, the anatase films thus obtained had a relatively high refractive index (similar to 2.0). Porous films were fabricated using the anatase colloidal solutions with surfactants. Some films had phase separation structures on the submicron scale, such as spinodal decomposition, which consisted of anatase nanocrystal agglomerate regions and surfactant regions. When the dispersion of the anatase colloids was improved, mesoporous films could also be fabricated, although mesopores were irregular in size, shape, and arrangement. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:3468 / 3474
页数:7
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