▎ 摘　　要

NOVELTY - Preparing modified graphene comprises (i) dispersing graphene or graphene oxide dispersed in organic solvent to form mixed solution, and (ii) reacting toluene diisocyanate and the mixed solution under nitrogen atmosphere or inert gas atmosphere at 25-50 degrees C for 12-24 hours to obtain modified graphene. USE - The method is useful for preparing modified graphene (claimed). ADVANTAGE - The method: changes graphene oxide and surface properties from hydrophilic into hydrophobic, which enables stable dispersion in organic solvent; prevents oxidized lower hydroxy active group of the the reaction condition; improves reaction rate and conversion rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for modified graphene, prepared by above method, where the graft ratio of toluene diisocyanate in the modified graphene is 65-85% and the content of toluene diisocyanate in the modified graphene is 40-70%.