溶胶-凝胶法制备纳米二氧化钛及其性能研究

Study on preparation and characterization of nanometer-sized TiO_2 by Sol-Gel method

以钛酸丁酯为先驱物,乙醇为溶剂,醋酸为螯合剂,采用溶胶-凝胶法制备粉体纳米二氧化钛.综合考虑水,醋酸,乙醇,温度以及滴加方式对钛酸丁酯水解的影响,并结合纳米二氧化钛样品光催化试验、X射线衍射和透射电镜表征的结果,找出制备二氧化钛的最优配比和最佳条件.

This paper discusses preparation of nanometer-sized titanium dioxide by Sol-Gel method. Io the Sol-Gel process, Ti（OC4H9）4 is used as precursor, C2H5OH is used as solvent and CH3COOH is used as chelating agent. By the experiment, four factors and their effects are studied, namely, the amount of water added, the amount of C2H5OH added, the amount of CH3COOH added and the temperature on the Sol-Gel process. The photocatalytic activity of particles obtained is also analyzed. With the results of XRD and TEM, the optimum preparation and the preparation reaction term are obtained.