Preparation of Silica-Coated Rhodium Nanoparticles Using Water-in-Oil Microemulsion
Preparation of Silica-Coated Rhodium Nanoparticles Using Water-in-Oil Microemulsion
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油包水微乳液制备二氧化硅包覆铑纳米粒子
DOI：
10.1246/cl.2000.1108
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发表时间：
2000
影响因子：
1.6
通讯作者：
K. Wakabayashi
中科院分区：
文献类型：
--
作者：
M. Kishida;T. Tago;T. Hatsuta;K. Wakabayashi
采用十六烷基聚氧乙烯醚/环己烷/水的w/o微乳液体系合成了单分散的二氧化硅包覆铑纳米粒子。在铑配合物纳米粒子的存在下，通过正硅酸乙酯的水解和热处理，在微乳液中得到了二氧化硅包覆的金属铑纳米粒子。在复合纳米颗粒中，直径为4 nm的金属铑颗粒几乎位于球形二氧化硅颗粒的中心。二氧化硅层的厚度为14 nm。
Monodispersed silica-coated rhodium nanoparticles were synthesized by using the w/o microemulsion of polyoxyethylene (15) cetyl ether / cyclohexane / water system. By hydrolysis of tetraethyl orthosilicate in the presence of rhodium complex nanoparticles followed by thermal treatment, the silica-coated metallic rhodium nanoparticles were obtained in the microemulsion. In the composite nanoparticles, a metallic rhodium particle with a diameter of 4 nm was located nearly at the center of a spherical silica particle. The thickness of silica layer was 14 nm.