| abstract |
[PROBLEMS] A metal oxide and / or metal peroxide that is uniformly dispersed and has excellent stability and can be used in various fields such as highly active photocatalysts, antibacterial agents, and dye-sensitized solar cells. The present invention provides a fine particle dispersion sol of a product, a method for producing the same, and fine particle powder. A step of adding a basic solution to a solution containing a metal salt to form a precipitate of a metal hydroxide, and a step of separating the precipitate of the metal hydroxide obtained in the above step from the solution; Dispersing the separated metal hydroxide in a hydrogen peroxide solution and subjecting the resulting solution to heat treatment; and forming the metal oxide and / or metal peroxide fine particles in the heat treatment step. And a method for producing the above-mentioned fine particle dispersed sol. Metals include zinc, aluminum, niobium, and the like. |