▎ 摘　　要

NOVELTY - Method for preparing graphene, involves (a) taking graphene oxide and isooctanol as a raw materials and p-toluenesulfonic acid as a catalyst, condensing, refluxing at 183-186 degrees C for 8 hours, removing the water formed by the reaction using a water separator during the reaction, subsequently charging the reaction base with an ester base oil, stirring, and cooling to 90-100 degrees C, (b) cooling the reaction mixture to 90-100 degrees C until a pH value reaches 6.8-7.2, controlling vacuum pressure 1.01-0.70 kPa, dehydrating at 80-100 degrees C for 2-3 hours under reduced pressure, distilling at 150-170 degrees C for 2-4 hours under reduced pressure, centrifuging and filtering to obtain the product. USE - The method is useful for preparing graphene. ADVANTAGE - The prepared graphene exhibits excellent antiwear performance.