POROUS PHOTOCATALYST AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a porous photocatalyst used as an environment cleaning material for decomposing and removing an environmental pollutant, for example, a malodorous component or NOx contained in air and performing wastewater treatment or cleaning treatment and a method of manufacturing the same. SOLUTION: The porous photocatalyst has a constitutional feature such that calcium phosphate is supported on the surface of a porous carrier in an island-like state or the surface of the porous carrier is coated with a titanium oxide membrane containing titanium oxide particles on which calcium phosphate is supported in the island-like state. This photocatalyst is manufactured by immersing the porous carrier, having a membrane of titanium oxide formed thereon, in an isotonic pseudo-solution containing both of calcium hydroxide and phosphate ions and allowing this solution to stand to support calcium phosphate, which is formed by the reaction of calcium hydroxide and phosphate ions, on the surface of the membrane.