▎ 摘　　要

NOVELTY - Preparing reduced graphene oxide comprises adjusting the pH value of graphite oxide suspension to 9-11, subjecting it to dispersion and peeling and centrifugation to obtain graphene oxide sol, mixing graphene oxide sol and the coagulating and precipitating agent, stirring, coagulating, and allowing to stand and performing sedimentation treatment to obtain graphene oxide aggregates, dehydrating and washing to obtain graphene oxide gel, where the agglomerating and precipitating agent comprises inorganic ammonium salt, freeze-drying the graphene oxide gel under vacuum and reducing at high temperature in a protective atmosphere to obtain reduced graphene oxide. USE - The method is useful for preparing reduced graphene oxide. ADVANTAGE - The method has simple process and saves cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for precipitating graphene oxide sol comprising mixing graphene oxide sol and agglomerating and precipitating agent, stirring, agglomerating, allowing to stand and performing sedimentation treatment to obtain graphene oxide aggregates, dehydrating and washing to obtain graphene oxide gel, where the coagulating precipitating agent comprises an inorganic ammonium salt. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of the process of preparing reduced graphene oxide. (Drawing includes non-English language text).