不同晶型纳米TiO_2的制备及其在水中分散性能的研究  

Research on the Preparation and Dispersing of Different Crystal Nano-TiO_2 in Water

作　　者：罗晓民[1] 吴东秋[2] 冯见艳[1,2] 杨菲菲[1,2] 

机构地区：[1]陕西科技大学资源与环境学院,西安710021 [2]陕西科技大学化学与化工学院,西安710021

出　　处：《涂料工业》2013年第5期35-39,共5页Paint & Coatings Industry

基　　金：浙江省科技厅科技计划项目;项目编号:2011C31004;咸阳市科技计划项目;项目编号:xk0909-2;陕西科技大学研究生创新基金

摘　　要：采用凝胶-溶胶法制备了不同晶型纳米TiO2,通过X射线衍射(XRD)和扫描电子显微镜(SEM)表征制备出的纳米TiO2晶型为锐钛矿型和金红石型,粒径约为50 nm;考察了不同种类分散剂对不同晶型纳米TiO2在水中分散性能的影响,重力沉降评价、分光光度测试、粒径的测试结果表明:锐钛矿型纳米TiO2在含分散剂六偏磷酸钠(SHMP)的水溶液中分散较好;金红石型纳米TiO2在含分散剂羧甲基纤维素钠(CMC)的水溶液中分散性较好。By using the gel -sol process to prepare different crystal -type nano -TiO2. The prepared crystal phase of nano -TiO2 were anatase and futile with grain size about 50 nm, deter- mined by XRD, SEM. The influence of dispersants on the dispersing performance of different crys- tal- type nano- TiO2 were studied. The assessment by gravity sedimentation, the test results of spectrophotometer and grain size test showed that anatase nano -TiO2 had a good dispersion in the SHMP water solution and the futile nano -TiO2 dispersed well in the CMC water solution.

关 键 词：纳米TIO2 晶型 分散剂 稳定性 

分 类 号：TQ621.12[化学工程—精细化工]