▎ 摘　　要

NOVELTY - Preparation of metal nanoparticles/graphene/carbon nanotubes composite material involves (a) dispersing graphite oxide and carbon nanotubes in solvent and ultrasonically processing to obtain graphite oxide/carbon nanotubes mixed solution, (b) adding metal salt solution and surfactant to graphite oxide/carbon nanotubes mixed solution and mixing to obtain metal salt/graphite oxide/carbon nanotubes mixed solution, and (c) carrying out irradiation treatment on metal salt/graphite oxide/carbon nanotubes mixed solution using gamma -rays at room temperature filtering and washing. USE - The method is useful for preparing metal nanoparticles/graphene/carbon nanotubes composite material (claimed). ADVANTAGE - The method ensures preparation of metal nanoparticles/graphene/carbon nanotubes composite material with low infrared emission rate of less than 0.5. DETAILED DESCRIPTION - Preparation of metal nanoparticles/graphene/carbon nanotubes composite material involves (a) dispersing graphite oxide and carbon nanotubes in solvent and ultrasonically processing at power of 450-1200 W to obtain graphite oxide/carbon nanotubes mixed solution, (b) adding metal salt solution and surfactant to graphite oxide/carbon nanotubes mixed solution and mixing to obtain metal salt/graphite oxide/carbon nanotubes mixed solution, and (c) carrying out irradiation treatment on metal salt/graphite oxide/carbon nanotubes mixed solution using gamma -rays at room temperature and dosing rate of 10-300 Gy/minute, filtering and washing. The concentration of graphite oxide is 0.5-2 mg/ml. The concentration of carbon nanotubes is 0.5-2 mg/ml. The carbon nanotubes are hydroxylated or carboxylated single-walled or multi-walled carbon nanotubes. The single-walled carbon nanotubes have diameter of 1-3 nm and length of 1-20 mu m. The multi-walled carbon nanotubes have diameter of 10-40 nm and length of 5-30 mu m. The solvent is water, ethanol, ethylene glycol, N,N-dimethylformamide or N-methylpyrrolidone. The concentration of metal salt solution is 1-5 mmole/l. The concentration of surfactant is 0.1-1 mg/ml. The metal salt solution comprises chloroauric acid, silver nitrate, aluminum chloride, copper chloride, copper nitrate and copper sulfate. The surfactant is sodium dodecylbenzenesulfonate, sodium lauryl sulfate, polyvinylpyrrolidone or polyvinyl alcohol. The absorbed dose of metal salt/graphite oxide/carbon nanotubes mixed solution is 10-1000 kGy. The gamma -ray is cobalt-60 gamma ray.