粉石英包覆二氧化钛制备复合粉体的研究  

Preparation of Compound Powder from Quartz Powder by Coating with Titanium Dioxide

作　　者：付剑侠[1,2] 杨玉芬[2,3] 解强[1] 周守发[1] 姜信敏[1] 盖国胜[2] 

机构地区：[1]中国矿业大学化学与环境工程学院,北京100083 [2]清华大学材料科学与工程系先进材料教育部重点实验室,北京100084 [3]河北清华发展研究院微纳米材料与综合利用研发中心,河北廊坊065001

出　　处：《中国矿业大学学报》2010年第3期386-390,共5页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(50974079);国家科技支撑计划项目(2007BAB24B02);广东省教育部产学研结合项目(0712226100053)

摘　　要：采用化学沉积法在粉石英表面包覆TiO2,研究了TiOSO4—H2O—SiO2反应体系的温度、水解时间、晶种、表面活性剂等因素对包覆的影响;利用SEM,XRD,IR等对复合粉体的形貌、组成、表面官能团等进行表征.结果表明:化学沉积过程中采用自生晶种、并有表面活性剂作用下,水解温度95℃,粉石英-硫酸氧钛水溶液体系保持5 h,能制备出包覆效果良好的复合粉体,白度最高可达93.4,复合粉体中粉石英表面包覆致密的锐钛型TiO2,二者以化学键结合,强度较高.Compound powder was prepared from quartz powder coated with titanium dioxide by a chemical deposition method. The effects of reaction temperature, hydrolysis time, seeds and the surfactant in TiOSO4--H2O--SiO2 system on coating were studied, and the morphology, composition and surface functional groups of the compound powder were characterized by SEM, XRD and IR, respectively. The results show that well coated compound powder can be obtained using self-growing seed during chemical deposition in the presence of surfactant and under optimized reaction conditions at hydrolysis temperature of 95℃, lasting 5 hours for the quartz powder TiOSO4 water solution system. The whiteness of derived compound powder is up to 93.4. The compact anatase titanium dioxide is coated on the surface of kernel quartz powder, and the kernel and shell components are linked by chemical bond which results in the high coating intensity.

关 键 词：粉石英 硫酸氧钛 二氧化钛 复合粉体 

分 类 号：TB332[一般工业技术—材料科学与工程] TB383