Synthesis of titania-coated silica nanoparticles using a nonionic water-in-oil microemulsion

被引:48
作者
Fu, X [1 ]
Qutubuddin, S [1 ]
机构
[1] Case Western Reserve Univ, Dept Chem Engn, Cleveland, OH 44106 USA
关键词
reverse microemulsion; silica; titania coating; nanoparticles;
D O I
10.1016/S0927-7757(00)00723-8
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Titania-coated silica nanoparticles were prepared by controlled hydrolysis of tetraethoxysilane (TEOS) and titanium n-butoxide (TBOT) in Triton X-45/cyclohesane H2O reverse (water-in-oil) microemulsions. The pH of the microemulsion plays a key role in the coating of titania (TiO2) on silica (SiO2) nanoparticles. TiO2 loading up to 10 wt.% on SiO2 nanoparticles was detected by SEM-EDS. Quasielastic light scattering and transmission electron microscopy were used to characterize the size and morphology of synthesized nanoparticles. (C) 2001 Elsevier Science B.V. Ali rights reserved.
引用
收藏
页码:65 / 70
页数:6
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