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

A deodorizing/antibacterial/antifungal agent comprising a mixture of the following two kinds of fine particles dispersed in an aqueous dispersion medium:

• (i) titanium oxide fine particles, and
• (ii) alloy fine particles containing an antibacterial/antifungal metal and a metal constituent selected from the group consisting of silver-copper, silver-palladium, silver-platinum, silver-tin, gold-copper, silver-nickel, silver-antimony, silver-copper-tin, gold-copper-tin, silver-nickel-tin, silver-antimony-tin, platinum-manganese, silver-titanium, copper-tin, cobalt-copper, zinc-magnesium, silver-zinc, copper-zinc, silver-copper-zinc and combinations thereof,
• wherein the mixture of titanium oxide fine particles (i) and antibacterial/antifungal metal-containing alloy fine particles (ii) has a volume-based 50% cumulative distribution size (D50), as measured by dynamic laser light scattering, of from 5 to 100 nm, and the mixing proportion of the titanium oxide fine particles and the alloy fine-particles, expressed as the weight ratio of titanium oxide fine particles/alloy fine particles, is between 100 and 100,000.