▎ 摘　　要

NOVELTY - Photo catalyst comprises shell-core structure material of porous material core-meso porous quantum titanium oxide shell. USE - The photo catalyst is useful as detergent when washing clothes (claimed). ADVANTAGE - The photo catalyst can replace the existing detergent which is sprayed on the inner tank of the washing machine and catalyze with a light source which can decompose pollutants efficiently; is environmentally friendly and safely; avoids the residue and environmental pollution of traditional washing detergent. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing photo catalyst comprising (a) mixing, reacting the titanium source and sulfuric acid to obtain a titanyl sulfate solution, (b) adding porous material to titanyl sulfate solution to prepare titanyl sulfate-coated porous material, (c) continuing adding alkaline material to form a shell-core structure material of titanium hydroxide shell-porous material core and (d) performing solid-liquid separation, washing, drying, calcining and obtaining shell-core structure photo catalyst with a porous material core-meso porous quantum titanium oxide shell.