文献类型：期刊文献

中文题名：微乳液反应法合成二氧化钛超细粒子

英文题名：Preparation of TiO_2 Ultrafine Particles by Water-in-oil Microemulsion Reaction

作者：施利毅[1];胡莹玉[1];张剑平[1];房鼎业[2];李春忠[2]

机构：[1]上海大学化学化工学院,上海200072;[2]华东理工大学,上海200237

年份：1999

卷号：30

期号：5

起止页码：495

中文期刊名：功能材料

外文期刊名：Journal of Functional Materials

收录：CSTPCD;;Scopus;北大核心:【北大核心1996】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：微乳液;超细粒子;二氧化钛;合成

外文关键词：microemulsion; ultrafine particle; titania

摘要：含NH3·H2O和TiCl4的微乳液经混合、反应，得到TiO2超细粒子前驱体──水合TiO2，用紫外－可见光对不同反应时间t和ω（ω＝［水］／［表面活性剂］）时合产物混合液作跟踪测定，结果表明吸收峰位置随反应进行或ω增大发生红移；水合TiO2经不同温度缓烧所得粒子用XRD、IR、TEM、BET、EDS等手段进行表征，结果表明经650℃煅烧后粒子为锐钛型TiO2，平均晶粒尺寸24．6nm，比表面积53．8m2／g；经100℃煅烧后粒子为金红石型TiO2，平均晶粒尺寸53．5nm，比表面积20．3m2／g。
The precursor of TiO2 ultrafine particles, titanium hydroxides, were synthesized in nonionic water in oiI (W/O) microemulsions.The red - shifted peak appeared in the UV - VIS spectrum when the vatue of co (ω= [H2O]/ [surfactant] ) or reaction time increased.The hydroxide particles were calcined at 650℃ and 1000℃ to form TiO2 ultrafine particles. The measurement of IR, XRD, TEM, EDS, BET surface area were used to characterized the particles. The results showed that the samples calcined at 650℃ were anatase Phase, and the average grain size and BET specific surface area were 24. 6nm and 53. 8m2/g respectively, and the samples calcined at 1000℃ were rutile phase, the average grain size and BET specific surface area were 53. 5nm and 20. 3m2/g respectively.