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

Fabien Grasset (1) , R. Marchand (1) , A.-M. Marie (2) , D. Fauchadour (3) , F. Fajardie (3)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 IMN - Institut des Matériaux Jean Rouxel
3 RHODIA - Rhodia, Centre de Recherches d'Aubervilliers

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

Keywords: Nanocolloids; Microemulsion; DLS; CeO2; Silica; Core-shell; Nanoparticles

Domains: Chemical Sciences; Material chemistry; Chemical Sciences; Inorganic chemistry

Fabien Grasset, R. Marchand, A.-M. Marie, D. Fauchadour, F. Fajardie. Synthesis of CeO2@SiO2 core–shell nanoparticles by water-in-oil microemulsion. Preparation of functional thin film. Journal of Colloid and Interface Science, 2006, 299 (2), pp.726-732. ⟨10.1016/j.jcis.2006.02.028⟩. ⟨hal-03076669⟩