▎ 摘　　要

NOVELTY - Preparation of gas-sensitive material involves adding zinc nitrate hexahydrate and copper nitrate trihydrate to deionized water, dispersing ultrasonically to obtain copper-zinc precursor solution, adding urea to copper-zinc precursor solution, stirring, dispersing ultrasonically to obtain reduced graphene oxide colloidal solution, mixing reduced graphene oxide colloidal solution with obtained copper-zinc precursor solution, stirring to obtain suspension liquid mixture, transferring to PTFE-lined high-pressure reaction kettle, feeding the kettle into electric furnace for reaction, completing reaction to obtain blue-gray precipitated product, reducing graphene oxide-zinc copper hydroxide carbonate complex, cooling, centrifuging, washing, drying to obtain blue-gray powder of precursor of reduced graphene oxide-zinc-copper hydroxide carbonate composite, feeding blue-gray powder in muffle furnace, and annealing blue-gray powder in air atmosphere. USE - Preparation of gas-sensitive material. ADVANTAGE - The method is simple, easy to implement, and has excellent low temperature response performance material, and overcomes the technical problem of poor zinc oxide-based material to acetone gas and does not respond at low temperatures of 150 degrees C and below. DETAILED DESCRIPTION - Preparation of gas-sensitive material involves adding (1-3):2 mass ratio of zinc nitrate hexahydrate and copper nitrate trihydrate to deionized water, dispersing ultrasonically for 5-60 minutes to obtain copper-zinc precursor solution, adding urea to copper-zinc precursor solution, stirring at room temperature for 20-120 minutes, dispersing reduced graphene oxide in deionized water, dispersing ultrasonically to obtain reduced graphene oxide colloidal solution, mixing reduced graphene oxide colloidal solution with obtained copper-zinc precursor solution, stirring magnetically to obtain suspension liquid mixture, transferring suspension mixture to PTFE-lined high-pressure reaction kettle, feeding the reaction kettle into electric furnace for reaction temperature at 90-120 degrees C for 10-18 hours, completing reaction to obtain blue-gray precipitated product, reducing graphene oxide-zinc copper hydroxide carbonate complex, cooling reduced graphene oxide-zinc-copper hydroxide carbonate composite to room temperature, centrifuging, washing, drying at 45-85 degrees C for 12-24 hours to obtain blue-gray powder of precursor of reduced graphene oxide-zinc-copper hydroxide carbonate composite, feeding blue-gray powder in muffle furnace at 400-550 degrees C for heating rate of 2-5 degrees C/minute, and annealing for 2-4 hours blue-gray powder in air atmosphere.