▎ 摘　　要

NOVELTY - The preparation method of nickel sulfide/graphene-like carbon-nitrogen compound composite catalyst involves (1) weighing proper amount of thiourea in a crucible with lid, heating at 550 degrees C and rate of 2 degrees C/minute for 2 hours under air atmosphere to obtain yellow powder, heating in crucible at 500 degrees C and rate of 2 degrees C/minute for 2 hours to obtain graphene-like carbon nitrogen compound as pale yellow powder, (2) adding a certain amount of graphene-like carbon nitrogen compound, nickel acetate as a nickel source and thiourea as a sulfur source to a 25 mL single-necked round bottom flask, adding an appropriate amount of water and ethanol, ultrasonically dispersing, uniformly mixing, introducing nitrogen for 40 minutes to remove oxygen in the reaction system, and illuminating under xenon lamp, and (3) separating the solid by centrifugation, washing with deionized water and ethanol several times, drying the obtained solid in a vacuum drying box to obtain gray-black solid substance. USE - Preparation method of nickel sulfide/graphene-like carbon-nitrogen compound composite catalyst used for photocatalytic hydrogen production. ADVANTAGE - The method enables preparation of nickel sulfide/graphene-like carbon-nitrogen compound composite catalyst with low carbon and high photocatalytic hydrogen production rate, by simple, efficient, economical and environmentally-friendly processes.