TiO_2-SiO_2复合材料的制备和表征  

Preparation and Characterization of TiO_2-SiO_2 Composite Materials

作　　者：宋宽秀[1] 颜秀茹[1] 霍明亮[1] 郭伟巍[1] 李晓红[1] 刘小波 

机构地区：[1]天津大学理学院化学系,300072 [2]无锡市利达催化净化器有限公司,274002

出　　处：《硅酸盐通报》2000年第5期36-39,共4页Bulletin of the Chinese Ceramic Society

基　　金：天津市自然科学基金

摘　　要：采用水解法在SiO2 表面包覆纳米TiO2 ,制备出TiO2 SiO2 复合材料 ,并用IR、SEM、XRD及化学分析手段进行表征。结果表明 :复合材料由纳米锐钛矿型TiO2 和SiO2 组成 ,它们之间有Ti O Si键形成 ,且该键对锐钛矿型TiO2 起了稳定作用。试验研究并讨论了制备条件对包覆效果的影响。The TiO 2 SiO 2 composite materials were prepared by hydrolysis of TiCl 4 in acid conditions at 75℃.The surface structure of TiO 2 SiO 2 samples was characterized by IR,SEM,XRD.The results indicated that the average diameter of TiO 2 was within 12nm,and the TiO 2 phase kept anatase form in wide range of temperature,this is due to the stabilization of anatase phase by coating SiO 2 phase through the Ti O Si interface.The effects of preparing condition on TiO 2 SiO 2 were studied

关 键 词：纳米二氧化钛 二氧化硅 复合材料 制备 包覆 

分 类 号：TQ134.11[化学工程—无机化工] TB332[一般工业技术—材料科学与工程]