▎ 摘　　要

NOVELTY - Manufacture of graphene-noble metal nanocomposite material involves spraying graphene nanoparticle dispersion and noble-metal nanoparticle dispersion such that graphene nanoparticles are wrapped around the surface of aggregated noble-metal nanoparticles. The graphene nanoparticle dispersion is prepared by mixing graphite powder and water to prepare a graphite solution, adding surfactant to graphite solution, and irradiating ultrasonic waves. The noble-metal nanoparticle dispersion is prepared by mixing a polysaccharide and a water-soluble noble metal compound, reacting and reducing. USE - Manufacture of graphene-noble metal nanocomposite material (claimed). DETAILED DESCRIPTION - Manufacture of graphene-noble metal nanocomposite material involves spraying graphene nanoparticle dispersion and noble-metal nanoparticle dispersion such that graphene nanoparticles are wrapped around the surface of aggregated noble-metal nanoparticles. The graphene nanoparticle dispersion is prepared by mixing graphite powder and water in a weight ratio of 0.4-0.8:100 to prepare a graphite solution, adding 6-14 pts. wt. surfactant to 100 pts. wt. graphite solution, and irradiating ultrasonic waves. The noble-metal nanoparticle dispersion is prepared by mixing a polysaccharide and a water-soluble noble metal compound, reacting at 75-80 degrees C and pH of 11.5 or more, and reducing for 2-5 hours.