Synthesis of CeO2@SiO2 core-shell nanoparticles by water-in-oil microemulsion.: Preparation of functional thin film

被引:55
作者
Grasset, F.
Marchand, R.
Marie, A. -M.
Fauchadour, D.
Fajardie, F.
机构
[1] Univ Rennes 1, UMR Sci Chim Rennes 6226, CNRS, UR1, F-35042 Rennes, France
[2] Inst Mat Jean Rouxel, IMN, UMR 6502, F-44322 Nantes 03, France
[3] RHODIA Rech, F-93300 Aubervilliers, France
关键词
nanocolloids; microemulsion; DLS; CeO2; silica; core-shell; nanoparticles; CERIUM OXIDE NANOPARTICLES; HIGH-SURFACE-AREA; CEO2; NANOPARTICLES; PARTICLES; PRECIPITATION; CATALYSTS; LAYERS;
D O I
10.1016/j.jcis.2006.02.028
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
Synthesis of nanoparticles under restricted environment offered by water-in-oil (W/O) microemulsions provides excellent control over particle size and shape, and inter-particle spacing. Such an environment has been involved to synthesize silica nanoparticles with a CeO2 core, so-called CeO2@SiO2. Aqueous fluids made up of ceria nanoparticles with a size close to 5 nm have been used as the water phase component. The starting CeO2 sols and obtained CeO2@SiO2 nanoparticles have been characterized by dynamic light scattering (DLS), X-ray diffraction, scanning and transmission electron microscopy, and specific surface area measurements. The microemulsion process has been characterized by DLS. Preliminary results on CeO2@SiO2 thin films are presented. (c) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码:726 / 732
页数:7
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