锐钛矿型纳米TiO_2粉体的纯净制备  

Purified Preparation of Anatase TiO_2 Nanopowders

作　　者：王志义[1] 周成凤[1] 

机构地区：[1]青岛科技大学材料科学与工程学院,青岛266042

出　　处：《材料导报》2009年第8期88-90,共3页Materials Reports

基　　金：青岛科技大学博士启动基金项目

摘　　要：以钛酸丁酯为原料,采用可控醇盐水解沉淀法制得TiO2前驱体,450℃恒温煅烧2h后制备出粒径约10nm的纳米TiO2粉体,并与传统溶胶-凝胶法制备的TiO2纳米粉体的形貌、结构、工艺过程进行了对比。结果表明,可控醇盐水解沉淀法可制得纯度高、粒径小且分布范围窄的纳米TiO2粉体,工艺简单,流程最短。该方法的关键是实现了醇盐的可控水解。TiO2 nanopowders with particle size about 10nm are prepared by TiO2 precursor at 450℃ for 2h, and TiO2 precursor is prepared by controlled alkoxide hydrolysis precipitation method using tetrabutyl titanate as raw materials. The morphology, structure and preparation process of TiO2 nanopowders as-prepared are compared with that of TiO2 nanopowders prepared by traditional sol-gel method. Results show that the TiO2 nanopowders prepred by alkoxide hydrolysis precipitation method are pure, ultra-fine and narrowly distributed, and the preparation process is simple and short. The key of this method is that controlled alkoxide hydrolysis is achieved.

关 键 词：钛酸丁酯 醇盐水解沉淀法 可控水解 纳米TIO2粉体 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ426.81[化学工程]