纳米二氧化钛粉末的溶胶-凝胶法合成及晶相转化

被引：38

作者：

吴腊英

李长江

机构：

[1] 北京化工大学材料科学与工程系

[2] 北京化工大学物理系

来源：

无机化学学报 | 2002年 / 04期

关键词：

溶胶-凝胶; 纳米TiO2粉末; 锐钛矿; 金红石;

D O I：

暂无

中图分类号：

O614.411 [];

学科分类号：

摘要：

Nanosized TiO2 powder with anatase and rutile structures was synthesized by a sol gel method using TiCl4 ethanol solution as a precursor.The grain size ofTiO2 powder was about 63nm after the precursor was calcined at 600℃for 2 hours .The experimental techniques of XRD,TEM and Particle Distribution were used to characterize the synthesized specimens. Various special effects were investigated for their contribution to crystal structure and the size of TiO2 powder .Theformation of anatase as well as the rutile phase of TiO2 was indicted from the XRD when the reaction temperature was above 30℃and when the sol was irradiated by infrared rays .However, an anatase TiO2 powder formed after the heat treatment of the dried gel in a temperature range from 300℃to 500℃.Under the vacuum drying and with the calcined time below 3hours ,the anatase phase was gained .As well as with the increase of gelatinizing time, the anatase TiO2 powder was obtained.

引用

页码：399 / 403

页数：5