▎ 摘　　要

NOVELTY - Graphene is prepared by oxidizing a graphite material to form graphite oxide; spray-drying the graphite oxide and dispersing in water to obtain graphite oxide suspension; adding a dispersant to the graphite oxide suspension; and adding an acidic reducing agent to the graphite oxide suspension to carry out reduction reaction with the oxide graphite to form graphene, and further adding graphene with dispersing agent to obtain dispersion liquid and drying dispersion liquid to obtain surface modified graphene. USE - Method of preparing graphene (claimed). ADVANTAGE - The method can obtain graphene that can be uniformly dispersed in water, acid solution, alkaline solution or organic solvent.