▎ 摘　　要

NOVELTY - Preparation of metal-doped graphene adsorbent involves (s1) adding graphene oxide and sodium nitrate in concentrated sulfuric acid with concentration of 98%, and adding potassium permanganate and stirring for 1-3 hours to obtain mixed solution (A), using hydrogen peroxide to oxidize mixed solution (A), washing product with distilled water, and drying to obtain nitrogen atom modified graphene, (s2) preparing nitrogen atom modified graphene-dimethylformamide solution with concentration of 0.025 mg/mL, soaking for 8 hours, performing ultrasonic oscillation for 1-2 hours, performing centrifugation, and using supernatant for later use, (s3) under argon atmosphere, mixing hexachloroplatinic acid and aluminum chloride, adding mixture in supernatant, and adjusting pH to be neutral by potassium hydroxide to obtain mixed solution (B), and (s4) carrying out ultrasonic treatment of mixed solution (B), heating mixed solution in microwave oven, washing with ethanol, and carrying out vacuum drying. USE - Preparation of metal-doped graphene adsorbent used for adsorbing decomposition product of sulfur hexafluoride (claimed). ADVANTAGE - The prepared graphene adsorbent has excellent electrical conductivity and adsorption performance.