▎ 摘　　要

NOVELTY - A composite catalytic material is prepared by performing recombination of modified titanium dioxide and graphene quantum dots. USE - Composite catalytic material for air purifier (claimed). ADVANTAGE - The visible light composite catalytic material improves the purification efficiency of air purifier. The air purifier is protected from radiation damage caused by UV light, due to the use of economically available white light source. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for air purifier, which comprises photocatalytic component comprising composite catalytic material and carrier.