文献类型：期刊文章

作　　者：吴腊英[1] 李长江[2]

机构地区：[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,北京100029

出　　处：《无机化学学报》

年　　份：2002

卷　　号：18

期　　号：4

起止页码：399-403

语　　种：中文

收录情况：BDHX、BDHX2000、CAS、CSCD、CSCD2011_2012、IC、JST、RCCSE、RSC、SCI-EXPANDED(收录号：WOS:000174734900015)、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

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.

关 键 词：溶胶-凝胶 锐钛矿 金红石 合成  晶相转化  纳米二氧化钛粉末  化合物半导体

分 类 号：TN304.21] TB383[材料类]