▎ 摘　　要

NOVELTY - Method for preparing transparent conductive film from carboxyl functionalized graphene, involves (i) taking graphene oxide slurry in reaction kettle, dispersing, adding mixed solution of sulfuric acid and silver nitrate, transferring reaction kettle to ice water bath environment, filtering, washing, dispersing, and formulating into carboxyl functionalized graphene dispersion, (ii) selecting polyethylene terephthalate (PET) film substrate as film-forming substrate, drying to obtain carboxyl functionalized graphene film, and peeling film from substrate, and (iii) transferring carboxyl functionalized graphene film to quartz, placing in high-temperature reaction furnace chamber, installing vaporization furnace for vaporizing aminated carbon source, pumping raw materials to furnace, introducing vaporized carbon source to reaction furnace cavity to achieve bonding reaction with graphene functional groups, and repairing film formation defects. USE - The method is useful for preparing transparent conductive film from carboxyl functionalized graphene. ADVANTAGE - The method solves the problems of high-quality, large-scale and high-efficiency preparation of the graphene transparent conductive film. DETAILED DESCRIPTION - Method for preparing transparent conductive film from carboxyl functionalized graphene, involves (i) taking 10-50 pts. wt. graphene oxide slurry in a reaction kettle, stirring and dispersing with high-speed mechanical stirring for 3-5 minutes, adding 1-5 pts. wt. mixed solution of sulfuric acid and silver nitrate at a volume ratio of 1:3, continuously stirring for 5-10 minutes, after the mixture is uniform, transferring the reaction kettle to an ice water bath environment, using 800 W ultrasonic equipment to assist the reaction for 3-5 hours, after the reaction, filtering the solution with a Buchner funnel, washing the filter cake with 5 wt.% dilute hydrochloric acid solution and deionized water for 3-5 times, dispersing the filter cake in deionized water, and formulating into a carboxyl functionalized graphene dispersion, (ii) adjusting the concentration of the carboxyl functionalized graphene dispersion liquid to adjust to the excellent film-forming viscosity, where the film-forming process adopts knife-coating film-forming method, selecting the polyethylene terephthalate (PET) film substrate with suitable release force as the film-forming substrate, after the film is formed, drying in an oven at 60-100 degrees C to obtain a carboxyl functionalized graphene film, peeling the film from the substrate by mechanical peeling, and repeatedly using the substrate, and (iii) transferring the carboxyl functionalized graphene film to a quartz or mica substrate, placing in a high-temperature reaction furnace chamber, installing a vaporization furnace in front of the reaction furnace for vaporizing aminated carbon source, continuously pumping the raw materials into the vaporization furnace by a peristaltic pump, introducing vaporized carbon source to the reaction furnace cavity along with the carrier gas to achieve a bonding reaction with the graphene functional groups, repairing film formation defects, and obtaining the graphene transparent conductive film.