均分散氧化钛粒子的制备研究  

A Study of the Preparation of Monodispersed TiO_2 Particles

作　　者：于网林 杨平[1] 徐秋云[1] 朱迎[1] 奚正楷[1] 陈宗淇[1] 

机构地区：[1]山东建材学院应用化学系,青岛化工学院应用化学系

出　　处：《高等学校化学学报》1994年第11期1686-1689,共4页Chemical Journal of Chinese Universities

摘　　要：用升温水解法制备了组成为ＴｉＯ２的球形和椭球形均分散粒子。系统地研究了制备条件对粒子大小和形状的影响，用电子显微镜和红外光谱对粒子的形态和组成进行了分析。跟踪测定了均分散粒子形成过程中体系电导率的变化，探讨了均分散粒子的形成机制。The spherical and ellipsoidal monodispersed TiO2 particles were prepared by using the method of hydrolysis from Ti(SO4)2 at increasing temperature.The effects of the concentration of Ti(SO4)2 and initial pH value on the size and morphology of the particles were studied systematically. It was found that the size of the particles increased with increasing Ti(SO4)2 cuncentration and decreasing pH value,and the morphology of the particles also changed due to the two factors.The morphology,size,and composition of the particles were studied by electronic microscopy and IR.Based on the change of the conductibility of the solution during the formation of the particles,the formation mechanism of the monodispersed particles was discussed.

关 键 词：均分散粒子 二氧化钛 形成机制 

分 类 号：O614.417[理学—无机化学]