Tungsten Oxide Photocatalyst

The method of producing the tungsten oxide photocatalyst of the present invention includes, for example, a method comprising the steps of:

(a) dispersing tungsten oxide particles in an aqueous solution containing a Pt compound dissolved therein in an amount corresponding to 0.03 to 5 parts by weight of Pt based on 100 parts by weight of tungsten oxide particles;

(b) irradiating with visible light in a wavelength range capable of photoexciting the tungsten oxide particles;

(c) adding a sacrificial agent; and

(d) further irradiating with visible light. According to such a method, Pt particles formed from the Pt compound is supported on the surface of tungsten oxide particles as particles having a particle size defined in the present invention, and thus the objective tungsten oxide photocatalyst can be obtained.

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