▎ 摘　　要

NOVELTY - Preparing molybdenum disulfide photocatalyst comprises e.g. adding sodium molybdate dihydrate, thiourea and modified surfactant to deionized water, stirring for 0.5-1 hours, adding graphene dispersion, continuously stirring for 0.5-1 hours, transferring the mixed solution to the autoclave, raising the temperature to 150-200 degrees C at a temperature increase rate of 3-7 degrees C/minute, continuously stirring the reaction for 12-24 hours, naturally cooling to room temperature, separating the solid in the autoclave, washing the solid three times with deionized water and ethanol, placing in dry in an oven at 70-90 degrees C for 8-16 hours to obtain a graphene-molybdenum disulfide composite material, grinding the graphene-molybdenum disulfide composite material into powder, adding to the mixed solution of N, N-dimethylacetamide and water with a volume ratio of 1: 1-2, adding the modification surfactant, polyvinylpyrrolidone, solution A is obtained after ultrasound 0.5-1 hours. USE - The molybdenum disulfide photocatalyst is useful for photocatalytic hydrogen production (claimed). ADVANTAGE - The method: improves the photocatalytic activity by adding a modified surfactant; enhances the interfacial interaction between molybdenum disulfide, graphene and titanium dioxide, and makes the bonding between materials more tight; improves hydrogen production efficiency; and improves the microscopic morphology of the composite material. DETAILED DESCRIPTION - Preparing molybdenum disulfide photocatalyst comprises (1) adding sodium molybdate dihydrate, thiourea and modified surfactant to deionized water, stirring for 0.5-1 hours, adding graphene dispersion, continuously stirring for 0.5-1 hours, transferring the mixed solution to the autoclave, raising the temperature to 150-200 degrees C at a temperature increase rate of 3-7 degrees C/minute, continuously stirring the reaction for 12-24 hours, naturally cooling to room temperature, separating the solid in the autoclave, washing the solid three times with deionized water and ethanol, placing in dry in an oven at 70-90 degrees C for 8-16 hours to obtain a graphene-molybdenum disulfide composite material, (2) grinding the graphene-molybdenum disulfide composite material into powder, adding to the mixed solution of N, N-dimethylacetamide and water with a volume ratio of 1: 1-2, adding the modification surfactant, polyvinylpyrrolidone, solution A is obtained after ultrasound 0.5-1 hours, (3) dissolving tetrabutyl titanate, polyethylene glycol and diethanolamine in ethanol, stirring for 0.5-1 hours, adding concentrated nitric acid, continuously stirring for 0.5-1 hours, adding the solution A obtained in (2), continuously stirring for 0.5 hours, and obtaining solution B after 1 hours, and (4) adding the solution B obtained in (3) to the autoclave, raising the temperature to 150-200 degrees C at a temperature increase rate of 3-7 degrees C/minutes, after continuing the reaction for 12-24 hours, naturally cooling to room temperature, washing with ethanol three times, and placing in an oven at 120-150 degrees C for 8-16 hours to obtain a molybdenum disulfide photocatalyst. An INDEPENDENT CLAIM is also included for use method of molybdenum disulfide photocatalyst comprising adding a mixed solution of methanol and deionized water with a volume ratio of 1: 4-8 to the Pyrex (RTM: Heat-resistant borosilicate) reactor, dispersing the molybdenum disulfide photocatalyst in the mixed solution, equipping the 300W xenon lamp with a 420 nm optical cut-off filter for irradiation to decompose the mixed solution and generate hydrogen gas.