オクタノール/アセトニトリル溶液中での金属アルコキシドの加水分解による単分散酸化物粒子の生成

概要

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Monodispersed, spherical metal oxide (ZrO_2, TiO_2, Al_2O_3, Nb_2O_5 and Ta_2O_5) particles with submicrometer size have been prepared via an alkoxide route using an emulsion technique. The effects of experimental factors (reactants concentration, organic solvent, reaction temperature and time and HPC concentration) on average particle size, size distribution, morphology and aggregation were investigated. The addition of 40 vol% acetonitrile to an alkoxide-octanol solution led to the formation of alkoxide emulsion droplets with narrow size distribution. Monodispersed particles were obtained under carefully selected reaction conditions. The formation mechanism of monodispersed particles in octanol/acetonitrile solvent was different from the homogeneous nucleation and diffusion growth of particles observed for the hydrolysis of alkoxide in ethanol.
社団法人日本セラミックス協会の論文
1993-03-01