▎ 摘　　要

NOVELTY - Preparation method of silver-zinc oxide nanosheet-graphene-foamed nickel composite material involves dissolving zinc chloride in deionized water, uniformly stirring, adding aqueous ammonia under stirring conditions to generate white precipitate, uniformly stirring to obtain white mixed solution, transferring the white mixed solution into PTFE-lined reaction kettle, immersing the prepared graphene-foamed nickel in the solution, placing the reaction kettle in vacuum drying oven, heating, cooling reaction kettle to room temperature, taking out, washing and drying. USE - Method is useful for preparing silver-zinc oxide nanosheet-graphene-foamed nickel composite material (claimed). ADVANTAGE - The silver-zinc oxide nanosheet-graphene-foamed nickel composite material has high stability and quality. DETAILED DESCRIPTION - Preparation method of silver-zinc oxide nanosheet-graphene-foamed nickel composite material involves (a) taking foamed nickel as a substrate, ultrasonically cleaning the substrate with ethanol for 10-15 minutes and then ultrasonically cleaning with deionized water for 10-15 minutes to remove impurities of a surface of foamed nickel, drying the foamed nickel and then placing in a vacuumized tubular furnace, introducing 100-200 standard cubic centimeter per minute (sccm) argon gas and 100-200 sccm hydrogen gas into the tubular furnace, heating at 800-1200 degrees C under heating rate of 10-20 degrees C/minute, annealing for 20-30 minutes, introducing 10-20 sccm methane and 100-200 sccm hydrogen, growing graphene for 10-15 minutes, stopping the addition of methane, cooling the furnace to room temperature and taking out the sample to obtain graphene-foamed nickel, (b) dissolving 0.05-1 mole zinc chloride in deionized water, uniformly stirring, adding aqueous ammonia under stirring conditions to generate white precipitate, uniformly stirring to obtain white mixed solution, transferring the white mixed solution into PTFE-lined reaction kettle, immersing the prepared graphene-foamed nickel in the solution, placing the reaction kettle in a vacuum drying oven, heating at 100-140 degrees C, heat-preserving for 1-3 hours, cooling the reaction kettle to room temperature, taking out, washing and drying to obtain zinc oxide nanosheet-graphene-foamed nickel material, (c) preparing L-arginine solution with concentration of 8-10 mmole/l, preparing silver nitrate solution with concentration of 20-25 mmole/l, adjusting the pH value of silver nitrate solution to 9-11 using 20 %mass sodium hydroxide solution, dripping L-arginine solution into the silver nitrate solution, adding small amount of white precipitate and stirring for 5-10 minutes to obtain silver nitrate-arginine mixed solution where the molar concentration ratio of silver nitrate and L-arginine is 5:1-5:4, (d) immersing zinc oxide nanosheet-graphene-foamed nickel material to the silver nitrate-arginine mixed solution and leaving under dark condition for 10-18 hours, and (e) taking out sample, ultrasonically cleaning with deionized water for 10-20 seconds, directly placing the sample in 100-200 mmole/l ascorbic acid solution, leaving for 30-60 minutes, taking out, washing and drying to obtain product.