▎ 摘　　要

NOVELTY - Biologically reduced graphene oxide, prepared by: (i) mixing the graphene oxide suspension with denitrifying bacteria culture medium, inoculating denitrifying bacteria seed inoculum into it and placing in an incubator to carry out biological reduction; and (ii) allowing to stand the biologically reduced graphene oxide, centrifuging, cleaning, precipitating and drying, is claimed. USE - Used as biologically reduced graphene oxide. ADVANTAGE - The method utilizes environmentally friendly denitrifying bacteria; and has mild and controlled reaction conditions, simple media composition and fewer defects. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing biologically reduced graphene oxide, comprising the method as mentioned above.