TiO 2 nanoparticles were in-situ prepared on the solid/liquid interfacial adsorption layer. In the suspension of colloidal silica particles in binary mixtures of water/ethanol, a water-rich layer was formed on the hyd...TiO 2 nanoparticles were in-situ prepared on the solid/liquid interfacial adsorption layer. In the suspension of colloidal silica particles in binary mixtures of water/ethanol, a water-rich layer was formed on the hydrophilic surface of SiO 2. After phase equilibrium, dropping tetrabutyl titanate diffused into the adsorption layer and reacted with water. After centrifugation and drying, samples were obtained. The solvent-substituted experiment testified that reaction took place on the adsorption layer. TEM, XRD and electronic energy spectrum indicated uniform TiO 2 laid over the surface of SiO 2 particles. The effect of reaction temperature was investigated and potential mechanism was discussed.展开更多
文摘TiO 2 nanoparticles were in-situ prepared on the solid/liquid interfacial adsorption layer. In the suspension of colloidal silica particles in binary mixtures of water/ethanol, a water-rich layer was formed on the hydrophilic surface of SiO 2. After phase equilibrium, dropping tetrabutyl titanate diffused into the adsorption layer and reacted with water. After centrifugation and drying, samples were obtained. The solvent-substituted experiment testified that reaction took place on the adsorption layer. TEM, XRD and electronic energy spectrum indicated uniform TiO 2 laid over the surface of SiO 2 particles. The effect of reaction temperature was investigated and potential mechanism was discussed.
