▎ 摘　　要

NOVELTY - Graphite flakes are added to mixture of phosphoric acid, sulfuric acid and potassium permanganate, reacted, obtained product is washed, and filtered, to obtain graphene oxide. Zinc oxide nanoparticles doped with material chosen from aluminum, gallium and indium, and graphene oxide are dispersed in dimethylformamide, and graphene oxide is coated on surface of zinc oxide nanoparticles, to obtain graphene oxide-coated zinc oxide nanoparticles. The resultant product is reduced, separated, dried and subjected to plasma sintering, to obtain zinc oxide-reduced graphene oxide composite. USE - Manufacture of zinc oxide-reduced graphene oxide composite (claimed). ADVANTAGE - The method enables manufacture of zinc oxide-reduced graphene oxide composite having excellent electroconductivity, charge transfer characteristics and mobility, and high carrier concentration. DETAILED DESCRIPTION - Graphite flakes are added to mixture of phosphoric acid, sulfuric acid and potassium permanganate. The mixed solution is added to graphite plate at room temperature, reacted at 40-90 degrees C, the obtained product is washed, and passed through filtering membrane having nano-pores, to obtain graphene oxide. The obtained graphene oxide is dried using vacuum oven. Then, zinc oxide nanoparticles are doped with material chosen from aluminum, gallium and indium. Zinc oxide nanoparticles and graphene oxide are dispersed in dimethylformamide, and graphene oxide is coated on surface of zinc oxide nanoparticles, to obtain graphene oxide-coated zinc oxide nanoparticles. The resultant product is reduced by adding hydrazine monohydrate and selectively separated, to obtain reduced graphene oxide-coated zinc oxide nanoparticles. The resultant product is dried, and subjected to plasma sintering at 850-1100 degrees C and 10-80 MPa in vacuum atmosphere, to obtain zinc oxide-reduced graphene oxide composite. The zinc oxide nanoparticles are doped by providing aluminum nitrate nonahydrate as source material of aluminum, gallium nitrate nonahydrate as source material of gallium and indium nitrate nonahydrate as source material of indium, dissolving source materials, zinc nitrate hexahydrate and hexamethylenetetramine in distilled water, reacting, removing residual zinc hydroxide, and drying. The weight ratio of zinc oxide nanoparticles and graphene oxide is 95:5-99.9:0.1.