▎ 摘　　要

NOVELTY - Molybdenum nickel sulfide/graphene composite comprises graphene sheet and molybdenum-nickel sulfide sheet stacked on the graphene sheet. USE - The molybdenum nickel sulfide/graphene composite is useful in hydrodesulfurization catalyst field. ADVANTAGE - The composite solves the technical problem of low catalytic performance of the hydrodesulfurization catalyst, the lamellae of the composite are in close contact, and the molybdenum-nickel sulfide with few layers and short lamellae is uniformly dispersed on the graphene, and has excellent hydrodesulfurization performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing composite, comprising (i) ultrasonically dispersing graphite oxide and polyethyleneimine in deionized water to obtain graphite oxide dispersion and polyethyleneimine solution, respectively, adding polyethyleneimine solution dropwise into the graphite oxide dispersion, and stirring reaction overnight, centrifugally washing, re-dispersing collected solid phase in deionized water to obtain modified graphite oxide aqueous solution, (ii) dispersing phosphomolybdic acid and nickel nitrate in deionized water to obtain mixed solution, adding mixture dropwise into the modified graphite oxide aqueous solution, stirring overnight, transferring to hydrothermal kettle with polytetrafluoroethylene lining for hydrothermal reaction, collecting solid phase after the reaction, and drying to obtain a composite precursor, and (iii) heating the composite precursor in a tube furnace in a hydrogen sulfide/hydrogen mixed atmosphere.