纳米TiO_2粉体分散性的研究  

Study on the dispersion of nanometer TiO_2 powder by Sol-Gel method

作　　者：单凤君[1] 高杰[1] 贾文东[1] 徐庆鑫[1] 徐忠厂[1] 

机构地区：[1]辽宁工学院化学与工程学院,辽宁锦州121001

出　　处：《化学工程》2006年第1期52-54,共3页Chemical Engineering(China)

基　　金：辽宁省自然科学基金项目(9910300401);辽宁省教育厅基金及辽宁省专利基金资助项目(200131008)

摘　　要：以钛酸丁酯为原料,无水乙醇为溶剂,浓硝酸为酸度控制剂,冰醋酸为抑制剂,用溶胶-凝胶法制备粒径为10nm左右的纳米TiO2粉体。并通过表面活性剂和共沸蒸馏来改善纳米TiO2粉体的团聚,结果表明部分阴离子表面活性剂和非离子表面活性剂对纳米TiO2粉体的团聚改善较明显,而阳离子表面活性剂对粉体的团聚改善不明显;共沸蒸馏对粉体的团聚改善也较显著。The experiment was carried out with the tetrabutyl titanate as raw material, anhydrous ethanol as solvent, concentrated nitric acid as acidity controlling agent, and glacial acetic acid as inhibiting agent by means of Sol-Gel method to prepare nanometer TiO2 powder of about 12nm. The powder conglobation was improved by the azeotropic distillation and the surface active reagent. The experimental results show that the conglobation improvement of powder is evident with anion surfactant and ion surfactant, the conglobation improvement of powder is not evident with cation surfactant; the conglobation improvement of powder is also evident by azeotropic distillation.

关 键 词：纳米二氧化钛 溶胶-凝胶 改善团聚 

分 类 号：O614.411[理学—无机化学]