低温水解制备不同晶型的纳米TiO_2  

Preparation of nanosized titania with different crystal forms by low temprature-hydrolysis method

作　　者：徐斌海[1] 姚超[2] 方志成[2] 成庆堂[1] 

机构地区：[1]江苏河海纳米科技股份有限公司,泰兴225400 [2]江苏工业学院化学化工系,常州213164

出　　处：《化工新型材料》2009年第12期101-104,共4页New Chemical Materials

基　　金：江苏省博士后基金(No.0602020B);江苏省教育厅项目(No.08KJD430011)资助项目

摘　　要：以四氯化钛为原料,通过低温水解法制备出不同物相的纳米TiO2。研究了不同钛离子浓度、乙醇用量、反应温度和反应时间对纳米TiO2晶相的影响,利用X射线衍射和拉曼光谱对所得样品进行表征。结果表明,水解过程中钛离子浓度的变化直接影响到产物晶型的改变,在钛离子浓度较高时,乙醇的存在对亚稳相纳米TiO2的形成具有促进作用。The nanosized titania with different crystal forms was prepared by hydrolysis of titanium tetrachloride at low temprature. The Prepared samples were characterized by X-ray powder diffraction （XRD）, Raman spectra and trans mission electron microscopy （TEM）. The effects of Ti^4＋ concentration, dosage of alcohol, reaction temperature and time on the crystal phase of nanosized titania were investigated. The results showed that the phase of nanosized TiO2 depended on Ti^4＋ concentration primarily, the exsit of alcohol promoted the form of metastable state nanosized TiO2.

关 键 词：纳米TIO2 制备 水解 

分 类 号：O614.411[理学—无机化学]