Deodorizing/antibacterial/antifungal agent, method of preparation thereof, and member having deodorizing/antibacterial/antifungal agent on surface

A method for producing a deodorizing/antibacterial/antifungal agent, comprising the steps of:

• (1) preparing a peroxotitanic acid solution from a starting titanium compound, a basic substance, hydrogen peroxide and an aqueous dispersion medium;
• (2) preparing a titanium oxide fine-particle dispersion by heating the peroxotitanic acid solution prepared in Step (1) at between 80 and 250° C. under pressure control;
• (3) preparing a solution containing a starting antibacterial/antifungal metal compound and a solution containing a reducing agent for reducing the starting metal compound;
• (4) preparing an alloy fine-particle dispersion by mixing together the solution containing a starting antibacterial/antifungal metal compound and the solution containing a reducing agent for reducing the starting metal compound that were prepared in Step (3);
• (5) washing the alloy fine-particle dispersion prepared in Step (4) with an aqueous dispersion medium by membrane filtration method;
• and
• (6) mixing together the titanium oxide fine-particle dispersion and the alloy fine-particle dispersion obtained in Steps (2) and (5).