▎ 摘　　要

NOVELTY - Preparing high-quality graphene material by ultraviolet degradation comprises: (i) adding graphene oxide into deionized water, adding dispersant and stirring ultrasonically for 1-2 hours to obtain a graphene oxide dispersion liquid; (ii) adding the graphene oxide dispersion liquid into a stirring kettle, then adding initiator and uniformly stirring to obtain graphene oxide mixed solution; (iii) adding the graphene oxide mixed solution into an illumination reaction kettle, then adding photo-catalytic block, sealing, carrying out sealed aeration reaction for 5-7 hours and filtering to obtain a mixed graphene precipitate; and (iv) soaking the mixed graphene precipitate and photo-catalytic block in absolute ethanol, ultrasonically reacting for 2-4 hours, removing photo-catalytic block, filtering and drying. USE - The method is useful for preparing high-quality graphene material by ultraviolet degradation. ADVANTAGE - The method is economical, environmentally-friendly, safe and recovers photo-catalytic material.