▎ 摘　　要

NOVELTY - A copper graphene quantum dot co-loaded ultra-thin porphyrin nanosheet modified electrode preparing method involves ultrasonic dispersing the graphite oxide solution and transferring to a PTFE reactor, suction filtering and carrying out dialysis, vacuum drying the olefin quantum dots, introducing an aqueous solution of copper chloride in an aqueous solution of sodium alkenyl succinate, stirring, washing and drying, adding a mixture of tetraphenylporphyrin/water/ethanol in a mixed solution of zirconium chloride/pyrazine/polyacrylamide/water/ethanol, ultrasonic dispersing, centrifuging the product, washing and dispersing, mixing ultra-thin porphyrin nanosheet ethanol solution, alkenyl succinate and graphene quantum dots with stirring, ultrasonic dispersing the mixed solution, drying, heating and calcining, dispersing the solution on the pretreated glass electrode, drying, coating the perfluorosulfonic acid solution on the substrate and allowing to air dry. USE - Method for preparing copper graphene quantum dot co-loaded ultra-thin porphyrin nanosheet modified electrode. ADVANTAGE - The method enables preparing copper graphene quantum dot co-loaded ultra-thin porphyrin nanosheet modified electrode with important development prospect. DETAILED DESCRIPTION - A copper graphene quantum dot co-loaded ultra-thin porphyrin nanosheet modified electrode preparing method involves ultrasonic dispersing the graphite oxide solution and transferring to a PTFE reactor under the pH=9.5-10.5, reacting at 210-230 degrees C for 20-30 hours, suction filtering and carrying out dialysis to obtain graphite, vacuum drying the olefin quantum dots at 55-65 degrees C for 6-10 hours and storing, introducing an aqueous solution of copper chloride in an aqueous solution of sodium alkenyl succinate at 75-85 degrees C, stirring at room temperature for 10-15 hours suction filtration, washing and drying, adding a mixture of tetraphenylporphyrin/water/ethanol in a mixed solution of zirconium chloride/pyrazine/polyacrylamide/water/ethanol within 10 minutes, ultrasonic dispersing, carrying out the reaction in a PTFE reactor at 75-85 degrees C for 14-18 hours, centrifuging the product, washing and dispersing in an ethanol solution to obtain an ultra-thin porphyrin nanosheet ethanol solution, mixing ultra-thin porphyrin nanosheet ethanol solution, alkenyl succinate and graphene quantum dots with stirring at 70-80 degrees C, ultrasonic dispersing the mixed solution, drying and heating in a tube furnace at a rate of 4-6 degrees C/minutes to 480-520 degrees C, calcining for 1-3 hours to obtain powder is dispersed in an acetone solution, dispersing the solution on the pretreated glass electrode, drying, coating the perfluorosulfonic acid solution on the substrate and allowing to air dry.