▎ 摘　　要

NOVELTY - Application of bismuth sulfide composite nitrogen hybrid graphene material in photocatalytic degradation of ammonia nitrogen under near-infrared light illumination condition. USE - Application of bismuth sulfide composite nitrogen hybrid graphene material in photocatalytic degradation of ammonia nitrogen under near-infrared light illumination condition, for ammonia nitrogen purification (claimed). ADVANTAGE - The method for photocatalytic-degrades ammonia nitrogen with bismuth sulfide composite nitrogen hybrid graphene material to nitrogen and water under near infrared light condition, and repeats catalysis after degradation of ammonia nitrogen 5-10 times, so that the degradation rate of ammonia nitrogen can still be more than 92%. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for ammonia nitrogen purification method which involves adding bismuth sulfide composite nitrogen hybrid graphene material to the liquid phase system containing ammonia nitrogen, and irradiating the liquid phase system with near-infrared light, so that the ammonia nitrogen is photocatalytic-degraded to nitrogen and water.