▎ 摘　　要

NOVELTY - Preparing nitrogen-doped graphene loaded with Pt/Co nanoparticles involves preparing a graphene oxide dispersion liquid, and performing ultrasonic pretreatment. A nitrogen source added to the graphene oxide dispersion, sonicated and stirred to obtain solution A. The solution A transferred to the lining of the autoclave, hydrothermal method is adopted at 160-200 degrees C, and reacted for 12-24 hours. The product after the reaction is filtered and washed with suction, dried under vacuum at 40-60 degrees C, and the obtained black solid is N-GO. A N-GO in deionized water is dispersed, cobalt acetate and potassium chloroplatinate are added, and stirred uniformly by ultrasonication. The sodium borohydride are added dropwise until no bubbles are generated under ice bath conditions, and solution B is obtained. The solution B is transferred to the lining of the high-pressure reactor, hydrothermal method is adopted at 160-200 degrees C, and reacted for 12-24 hours. USE - Method for preparing nitrogen-doped graphene loaded with Pt/Co nanoparticles used in the field of fuel cells. ADVANTAGE - The method enables to prepare nitrogen-doped graphene loaded with Pt/Co nanoparticles is simple preparation process, has low energy consumption, environment friendly and non-toxic. DETAILED DESCRIPTION - Preparing nitrogen-doped graphene loaded with Pt/Co nanoparticles involves preparing a graphene oxide dispersion liquid, and performing ultrasonic pretreatment. A nitrogen source added to the graphene oxide dispersion, sonicated and stirred to obtain solution A. The solution A transferred to the lining of the autoclave, hydrothermal method is adopted at 160-200 degrees C, and reacted for 12-24 hours. The product after the reaction is filtered and washed with suction, dried under vacuum at 40-60 degrees C, and the obtained black solid is N-GO. A N-GO in deionized water is dispersed, cobalt acetate and potassium chloroplatinate are added, and stirred uniformly by ultrasonication. The sodium borohydride are added dropwise until no bubbles are generated under ice bath conditions, and solution B is obtained. The solution B is transferred to the lining of the high-pressure reactor, hydrothermal method is adopted at 160-200 degrees C, and reacted for 12-24 hours. The reaction product is centrifuged, washed, and vacuum dried to obtain nitrogen-doped graphene loaded with Pt/Co nanoparticles.