▎ 摘　　要

NOVELTY - Preparing square shaped copper nanoparticle-graphene-foam nickel composite material comprises e.g. (i) treating foamed nickel with acetone, ethanol and deionized water, cleaning, removing surface oxide layer, and then drying to obtain graphene-foam nickel by chemical vapor deposition method, (ii) introducing into furnace quartz tube under vacuum, introducing argon and hydrogen gas, and annealing, and (iii) growing graphene when access to methane and hydrogen, cooling and removing sample to obtain, and (iv) immersing graphene-foamed nickel in copper sulfate solution. USE - The composite material is useful in catalysis, bio-sensing, environmentally friendly, surface enhanced Raman scattering, energy and other fields. ADVANTAGE - The material has large specific surface area, excellent biocompatibility and electrical conductivity. DETAILED DESCRIPTION - Preparing square shaped copper nanoparticle-graphene-foam nickel composite material comprises (i) treating foamed nickel with acetone, ethanol and deionized water, cleaning for 15-20 minutes, removing surface oxide layer, and then drying under nitrogen atmosphere to obtain graphene-foam nickel by chemical vapor deposition method, (ii) introducing into furnace quartz tube under vacuum, removing air inside the tube, introducing argon and hydrogen gas, raising temperature to 900-1000 degrees C at a rate of 15-20 degrees C/minutes, and annealing at this temperature for 30-40 minutes, and (iii) growing graphene when access to methane and hydrogen, growing for 5-10 minutes, drying off methane and rapidly cooling, cooling to room temperature and removing sample to obtain foamed nickel material covered with graphene, and (iv) immersing graphene-foamed nickel in 0.05-0.1 mM copper sulfate solution to displace the reaction for 1-1.5 hours by chemical vapor deposition method.