溶胶-凝胶法制备TiO_2凝胶的影响因素及方法改进  

ANALYSIS ON FACTORS AFFECTING PREPARATION OF TiO_2 GEL BY SOL-GEL METHOD

作　　者：杨依隆[1] 辛秀兰[1] 胡代强[1] 秦省军[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100037

出　　处：《北京工商大学学报（自然科学版）》2007年第3期9-13,共5页Journal of Beijing Technology and Business University:Natural Science Edition

基　　金：国家自然科学基金资助项目(20206001)

摘　　要：研究了溶胶-凝胶法制备TiO2溶胶的胶凝过程,以钛酸丁酯为前驱物,无水乙醇为溶剂,分析了反应物滴加速率、溶胶液pH值、反应底物配比、反应温度、无机酸以及螯合剂的种类对凝胶形成时间的影响,得出了适宜的凝胶制备条件,并对制备稳定均一TiO2凝胶的方法进行了分析和改进.With ethanol as solvent and Ti（OBu）4 as precursor, the process for preparing TiO2 gel by sol-gel method was studied. The influence on the formation of the gel setting time of different reaction conditions, such as dropping the reaction rate, Sol pH, reaction substrate ratio, the reaction temperature, type of inorganic acid and complexing reagent, were analyzed. For the common method and some modified methods, the optimal reaction conditions are detected and compared respectively.

关 键 词：溶胶-凝胶法 螯合剂 TiO2凝胶 凝胶时间 

分 类 号：O648.14[理学—物理化学] TS03[理学—化学]