微波辅助条件下单分散球形TiO_2的制备  

Microwave assisted preparation of spherical monodispersed TiO_2

作　　者：扈玫珑[1] 白晨光[1] 徐盛明[2] 邱贵宝[1] 吕学伟[1] 张生富[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]清华大学核能与新技术研究院,北京100084

出　　处：《重庆大学学报（自然科学版）》2011年第5期53-58,共6页Journal of Chongqing University

基　　金：国家自然科学基金重大项目资助(51090383)

摘　　要：以微波作为热源,在正丙醇与水的混合溶剂体系中水解制备粒径分布窄、分散性好的球形TiO2。主要对前驱物浓度、微波功率、微波加热方式及溶液的pH值等对制备颗粒的影响作用进行实验研究,结果表明在正丙醇与水体积比为1∶1的条件下,以聚乙烯吡咯烷酮(PVP)为表面活性剂、在较短的微波加热时间内可制得粒径分布窄、分散性好的高质量球形TiO2颗粒;颗粒粒度大小及粒径分布受微波加热方式、前驱物浓度及pH值的影响较大,而微波加热功率相对其他因素来说影响较小。Spherical titania （Ti（）2） with narrow size distribution and nice dispersibility has been obtained by hydrolysis in the mixed solvent of 1-propanol to de-ionized water using microwave as heat source. Parameters like precursor concentration, heating method, microwave power, and pH value have been investigated. The results show that the high quality Ti02 can be synthesized using PVP as surfactant when the volume ratio of 1-propanol to de-ionized water is 1：1. The results display that size and size distribution of the particles are affected by heating method, precursor concentration and pH value. However, the effect of microwave power is comparatively less obvious.

关 键 词：微波辅助 球形Ti()2 单分散 制备 

分 类 号：TF123[冶金工程—粉末冶金]