▎ 摘　　要

NOVELTY - Preparation of photocatalytic water splitting catalyst, involves dispersing graphitic carbon nitride polymeric materials in tetrahydrofuran solution in nitrogen protection conditions, adding ethanol to remove unreacted lithium metal, centrifuging solid product to obtain graphitic carbon nitride nano-sheets, dispersing nano-sheets in water, adding graphene oxide, transferring the reaction solution to a kettle, heating to 140-200 degrees C for 2-12 hours, filtering the solution to obtain a solid product and drying solid product under vacuum to obtain photocatalytic water splitting catalyst. USE - Preparation of photocatalytic water splitting catalyst (claimed). DETAILED DESCRIPTION - Preparation of photocatalytic water splitting catalyst, involves placing urea in a covered ceramic crucible, calcining in a muffle furnace to obtain yellow graphitic carbon nitride polymeric material, dispersing graphitic carbon nitride polymeric materials in tetrahydrofuran solution in nitrogen protection condition using lithium metal as an electron donor, and naphthalene as an electron acceptor in the presence of alkyl halide solution in the phase stripping reaction, adding ethanol after the reaction to remove the unreacted lithium metal, centrifuging, washing and drying the solid product to obtain graphitic carbon nitride nano-sheets, dispersing graphitic carbon nitride nano-sheets in water, adding graphene oxide, subjecting the mixed solution to ultrasonic dispersion, transferring the reaction solution to a kettle, heating to 140-200 degrees C for 2-12 hours, filtering the solution after cooling to room temperature to obtain a solid product and drying the solid product under vacuum to obtain photocatalytic water splitting catalyst.