▎ 摘　　要

NOVELTY - Preparation of graphene based on green deoxidation includes intercalating and oxidizing graphite to obtain intercalated graphite oxide; stripping intercalated graphite oxide to obtain graphene oxide; transforming graphene oxide to graphene using green deoxidant by heating; and recycling green deoxidant by adding zeolite to conduct reduced pressure distillation and concentrating. USE - Preparation of graphene based on green deoxidation (claimed). ADVANTAGE - The green deoxidant is used to quickly prepare graphene in batch by heating. The reaction tail gas is simple and convenient to collect. The method realizes green and low-carbon production, easily operated deoxidation, safety, low cost, and zero emission. The green deoxidant can be recycled for a long time because it is not polluted in the reaction system. DETAILED DESCRIPTION - Preparation of graphene based on green deoxidation includes: (A) intercalating and oxidizing graphite by (i) putting graphite and preliminary oxidant in a flask; slowly adding intercalating oxidant; controlling the temperature; and magnetically stirring to make the reaction system uniform and stable; (ii) slowing adding strong oxidant for multiple times; quickly controlling the constant temperature; and magnetically stirring to react; (iii) adding deionized water and conducting termination reaction of the reaction system; adjusting the reaction temperature by magnetically stirring; heating; heat preserving; and magnetically stirring; (iv) adding strong oxidant after the reaction system becomes stable; using deionized water to twice dilute the reaction system to obtain suspending liquid; filter separating; and purifying to obtain intercalated graphite oxide; (B) stripping the intercalated graphite oxide to obtain graphene oxide by mixing intercalated graphite oxide with deionized water at room temperature; and ultrasonically dispersing the mixture to obtain suspension liquid of graphene oxide; (C) transforming the graphene oxide to graphene using green deoxidant by (i) adding green deoxidant water solution in the suspension liquid of graphene oxide; magnetically stirring smoothly and heat preserving; obtaining the reaction liquid after deoxidation; and collecting the carbon dioxide produced with the reaction system sealed off; and (ii) filter separating the reaction liquid to obtain graphene and filtrate; and (D) recycling green deoxidant by putting the filtrate in round-bottom flask; adding zeolite to conduct reduced pressure distillation; concentrating the liquid according to the concentration required in step (C); and using the concentrated solution in step (C).