Fabrication of titania films by sol-gel method using transparent colloidal aqueous solutions of anatase nanocrystals
Fabrication of titania films by sol-gel method using transparent colloidal aqueous solutions of anatase nanocrystals
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DOI：
10.1016/j.tsf.2010.12.247
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发表时间：
2011-03-31
期刊：
影响因子：
2.1
通讯作者：
Ohya, Yutaka
中科院分区：
文献类型：
--
作者：
Ban, Takayuki;Tanaka, Yusuke;Ohya, Yutaka
以锐钛矿型胶体溶液为原料，采用溶胶-凝胶法制备致密或多孔二氧化钛薄膜。当不含表面活性剂的锐钛矿型胶体溶液沉积在衬底上时，得到的锐钛矿型薄膜具有较高的折射率(接近2.0)。利用锐钛矿型胶体溶液和表面活性剂制备了多孔膜。一些薄膜具有亚微米尺度的相分离结构，如调幅分解，它由锐钛矿纳米晶团聚区域和表面活性剂区域组成。当锐钛矿型胶体的分散度提高时，虽然介孔的大小、形状和排列不规则，但也可以制备介孔薄膜。(C)2011爱思唯尔B.V.保留所有权利。
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.