▎ 摘　　要

NOVELTY - Nano-graphene quantum dots/silver platinum (N-GQDs/AgPt) hollow dendritic nanocomposite material is prepared by using nano-graphene quantum dots (N-GQDs) attached to the silver (Ag) surface as a carrier, after illumination treatment, attaching the silver platinum (AgPt) alloy to the inner and outer sides of the N-GQDs through displacement reaction to form a hollow dendritic structure. USE - The nano composite material of N-GQDs/AgPt hollow dendritic structure is useful as catalyst in methanol fuel cell (claimed). ADVANTAGE - The material has simple preparation, improved utilization rate of platinum, reduced production cost, good dispersibility of N-GQDs, electron and bifunctional effect of AgPt, illumination treatment of Ag/N-GQDs and special hollow dendritic structure, which greatly improves the catalytic activity of methanol (the catalytic performance is 21 times of commercial Pt/C) and anti-carbon monoxide (CO) poisoning ability.