▎ 摘　　要

NOVELTY - A nickel oxide/reduced graphene oxide composite nanomaterial comprises reduced grained graphene and nickel oxide nanocomposites. The reduced graphene is monolithic graphene nano-sheet and nickel oxide is nanoparticles. The nickel oxide nanoparticles are uniformly adhered to the surface of the reduced graphene oxide forming a cladding structure. USE - Nickel oxide/reduced graphene oxide composite nanomaterial (claimed). ADVANTAGE - The nickel oxide/reduced graphene oxide composite nanomaterial is prepared by simple and easy process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of nickel oxide/reduced graphene oxide composite nanomaterial, which involves (1) mixing concentrated sulfuric acid, potassium persulfate and phosphorus pentoxide, heating at 80 degrees C, adding certain amount of graphite into mixed solution for pre-oxidation reaction, after completion of the reaction, allowing the mixture to cool to room temperature, centrifuging the mixture with deionized water until the pH is neutral and naturally drying in air for 12 hours, (2) mixing pre-oxidized graphite with concentrated sulfuric acid, cooling to 0 degrees C, mixing potassium permanganate and cooling, controlling the mixing bath temperature less than or equal to 20 degrees C, warming mixed solution to 35 degrees C for 2 hours, adding deionized water, increasing the temperature of the mixture to 98 degrees C, after 15 minutes, adding large amount of water and aqueous hydrogen peroxide solution to the flask to terminate the entire reaction, washing the mixed solution with hydrogen chloride solution to remove metal ions from the solution, washing the mixed solution with deionized water until the pH is neutral, diluting the resulting suspension with deionized water and obtaining a well-dissolved solution, (3) taking certain amount of nickel(II) nitrate hexahydrate and citric acid, mixing into a homogeneous solution, transferring into a tube furnace, after the reaction is complete, collecting the nickel oxide reaction product in aqueous ammonia, adding nickel oxide solution to the solution obtained in step (2), stirring well, transferring into a PTFE-lined reactor, hydrothermally reacting, after the completion of the reaction, collecting the solid product and filtering.