Physical-Chemical Properties of TiO 2 Membranes Controlled By Sol-Gel Processing
Physical-Chemical Properties of TiO 2 Membranes Controlled By Sol-Gel Processing
复制标题
溶胶-凝胶法控制TiO 2 膜的物理化学性质
DOI：
10.1557/proc-132-41
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
M. Anderson
中科院分区：
文献类型：
--
作者：
Qunyin Xu;M. Anderson
采用溶胶-凝胶法制备了醇盐前驱体二氧化钛颗粒膜。在溶胶制备过程中，由物理化学过程控制的聚集程度影响胶凝体积和凝胶结构。虽然已经提出了三种类型的凝胶结构，但这些水凝胶结构似乎对最终膜的孔隙率影响不大。燃烧温度是一个更为关键的参数。结果表明，初始粒径决定了tio2体系的最终膜孔隙率。
Particulate TiO 2 membranes have been prepared by sol-gel techniques from alkoxide precursors. The degree of aggregation, which is controlled by physical chemical processes during sol preparation influences the gelling volume and gel structure. While three types of gel structures have been proposed, the porosity of the final membrane seems to be little affected by these hydrogel structures. Firing temperature is a much more critical parameter. It is concluded that the primary particle size determines the final membrane porosity in this TiO 2 system.