▎ 摘　　要

NOVELTY - Preparation of nickel/graphene carbonitride composite catalyst, involves (i) obtaining yellow-white powder as graphene-like carbon-nitrogen compound (ii) adding graphene-like carbon-nitrogen compound into one-neck round bottom flask, adding sodium hypophosphite and mixed aqueous solution of nickel chloride, adding water and triethanolamine, mixing and introducing nitrogen gas to remove oxygen, placing under xenon lamp light, uniformly illuminating while stirring, (iii) separating the solids, centrifuging and washing with deionized water, then washing with ethanol and drying. USE - Preparation of nickel/graphene carbonitride composite catalyst used for photocatalytic hydrogen production (claimed) in industrial application. ADVANTAGE - The nickel/graphene carbonitride composite catalyst is prepared with non-toxic and environmentally-friendly function, by a simple method at low cost. The method increases photocatalytic hydrogen production rate, improves stability and reduces cost. DETAILED DESCRIPTION - Preparation of nickel/graphene carbonitride composite catalyst, involves (i) taking appropriate amount of thiourea, placing in a crucible, calcining the crucible in a muffle furnace at 550 degrees C for 2 hours, reducing the temperature of muffle furnace to room temperature and taking out the crucible, triturating the yellow solid, and then placing in the crucible, placing the crucible in a muffle furnace at 500 degrees C for 2 hours, reducing the temperature of muffle furnace to room temperature and taking out the crucible and obtaining yellow-white powder as graphene-like carbon-nitrogen compound such as graphitic carbon nitride, (ii) adding appropriate amount of the graphene-like carbon-nitrogen compound into a 25 mL one-neck round bottom flask, adding a appropriate amount of sodium hypophosphite and a mixed aqueous solution of nickel chloride, adding appropriate amount of water and triethanolamine, mixing and then introducing nitrogen gas for 30-40 minutes to remove oxygen in the reaction system, and then placing under the xenon lamp light, uniformly illuminating while maintaining stirring, (iii) separating the solids using centrifugal separator after completion of the reaction, centrifuging and washing with deionized water 5-8 times, then washing with ethanol 1-3 times, drying the obtained solid matter, and obtaining resulting black solid material as nickel/ graphene carbonitride composite catalyst.