▎ 摘　　要

NOVELTY - Preparing copper oxide/cuprous oxide/graphene nanocomposite material comprises e.g. (i) dissolving copper acetate monohydrate in deionized water, (ii) preparing graphite as oxidized graphene solution, (iii) adding graphene solution into solution A, (iv) dissolving sodium hydroxide in deionized water, (v) dissolving glucose in deionized water, adding glucose solution, (vi) transferring mixture D into polytetrafluoroethylene liner stainless steel autoclave, transferring reaction mixture F into beaker, (vii) cleaning reaction product F, and (viii) placing aqueous solid product G in vacuum oven. USE - The composite material is useful in photocatalyst, energy storage devices and sensors and other fields. ADVANTAGE - The composite material has good crystallinity, uniformity and low control of microstructure. DETAILED DESCRIPTION - Preparing copper oxide/cuprous oxide/graphene nanocomposite material comprises (i) dissolving copper acetate monohydrate in deionized water to obtain solution A, (ii) preparing graphite as oxidized graphene solution using hummers method, (iii) adding graphene solution into solution A, magnetic stirring to obtain solution B, (iv) dissolving sodium hydroxide in deionized water, adding into solution B, and then stirring again to obtain solution C, (v) dissolving glucose in deionized water, adding into solution C, adding glucose solution, mixing using glass rods, continue mixing with glass rod to obtain mixture D, (vi) transferring mixture D into polytetrafluoroethylene liner of stainless steel autoclave and reacting at 100 degrees C for 10 hours to obtain reaction mixture product F, naturally cooling to room temperature until the stainless steel high pressure reactor, removing supernatant, transferring reaction mixture F into beaker, (vii) cleaning the reaction product F using deionized water, detecting the supernatant waste using pH meter, when the pH value of the supernatant liquid reaches 7, removing supernatant, allowing to stand to obtain aqueous solid product G, and (viii) placing aqueous solid product G in vacuum oven, and drying at 60 degrees C for 24 hours.