溶胶-凝胶法制备纳米TiO_2粉体的研究进展  

Research Progress on Preparation of Nanocrystalline TiO_2 by Sol-Gel Method

作　　者：曾爱香[1] 罗丽[1] 胡凯龙[1] 

机构地区：[1]长沙理工大学物理与电子科学学院,长沙410004

出　　处：《材料导报》2013年第19期23-28,共6页Materials Reports

基　　金：湖南省科技计划项目(2009GK3164)

摘　　要：纳米TiO2是一种常见的半导体材料,具有良好的光催化性能,被广泛应用于净化环境和光催化产氢等方面。简单介绍了TiO2粉体的溶胶-凝胶制备方法及其光催化机理,详尽分析了溶胶-凝胶法的不同制备条件对凝胶时间和TiO2粉体性质的影响,并探讨了TiO2改性处理的方法。Titanium dioxide （TiO2）, which is one of the m9st basic semiconductor materials, has emergea as an excellent photocatalyst material for environmental purification and photocatalytic hydrogen production. The preparation process of TiO2 powder by sol-gel method is briefly introduced as well as the mechanism of photocatalytic reaction. Effects of the sol-gel preparation conditions on the gelation time and properties of TiO2 are discussed in detail. The modification methods of TiO2 are investigated.

关 键 词：溶胶-凝胶法 纳米二氧化钛 影响因素 改性处理 

分 类 号：TQ134.11[化学工程—无机化工] TQ426