Patent ID: 9636660
Date: 2017-05-02
CPC Classifications: B01J,C01G

Claim:
1. A photocatalyst comprising: a porous metal oxide film consisting of a metal oxide; and metal particles formed on a surface of the porous metal oxide film, wherein the photocatalyst capable of activation by visible light of a wavelength from 380 nm to 700 nm, wherein the photocatalyst has a specific surface area from 50 m wherein the metal particles are present in an amount of 0.0001 mg to 0.01 mg per 1 cm wherein the metal particles form a discontinuous coating layer having island shapes on the surface of the porous metal oxide film, and the island shapes have an average diameter from 3 nm to 8 nm; and wherein the metal particles comprise at least one selected from the group consisting of tungsten, chromium, vanadium, molybdenum, copper, iron, cobalt, manganese, nickel, silver, cerium, cadmium, zinc, magnesium, calcium, strontium, barium, and combinations thereof.