摘要
以钛酸丁酯为前驱体,采用溶胶-凝胶法制备纳米级二氧化钛微粒。对溶胶、凝胶形成的不同条件进行了试验。水解时应将水用乙醇稀释再对钛酸丁酯进行水解;pH在2～3时产生的凝胶较为均匀;溶剂乙醇与前驱体钛酸丁酯的用量比例n(乙醇)︰n(钛酸丁酯)=5︰3较为理想;生成凝胶的合适温度为35～40℃。
YANG Xiao-yu （Hunan Chemical Industry and Vocational Technical College, Hunan Zhuzhou 412004, China） Abstract： Using tetrabutyl titanate as the precursor, nanoscale titanium dioxide particles were prepared by sol-gel process. The different formation conditions of sol and gel were studied .The results show that the suitable preparation conditions are as follows： during hydrolysis oftetrabutyl titanate, water should be diluted with ethyl alcohol; when pH value is in the range of 2 -3, the gel is produced uniformly; the ideal ratio of ethyl alcohol and tetrabutyl titanate is 5□3; the appropriate temperature for producing gel is 35-40 ℃.
出处
《当代化工》
CAS
2009年第5期459-462,共4页
Contemporary Chemical Industry
关键词
纳米二氧化钛
溶胶-凝胶法
制备条件
Nano-titanium dioxide
Sol-Gel Process
Preparation conditions
