abstract |
The present invention provides a method for producing metal oxide-containing particles, wherein a metal oxide sol containing metal oxide colloidal particles as a dispersoid, using water as a dispersion medium, and having a pH of 7 or more is supplied to a solvent-containing liquid In this liquid, an aggregate of metal oxide colloidal particles is formed, and the aggregate is processed by drying, heating, etc. to make water-insoluble particles, and the relative dielectric constant of the solvent at 20°C is 30 Below (protic solvent) or below 40 (aprotic solvent) and the solubility with respect to the water of 20 degreeC is 0.05g/100ml or more. By appropriately selecting the solvent, particles such as flakes, fibers, and spheres can be obtained. |