▎ 摘　　要

NOVELTY - Preparation of graphene oxide microsphere comprises setting a solid substrate having a hydrophobic surface on a bottom of a glass container; adding a mixed organic solvent to completely immerse the substrate, where the mixed organic solvent comprises toluene, ethyl acetate and ethanol, and liquid paraffin with a water-soluble organic solvent; injecting a graphene oxide aqueous solution to the mixed organic solvent; sealing the container at 20-60 degrees C for 20-120 minutes; and completely dissolving graphene oxide droplets in the organic phase. USE - Method for the preparation of a graphene oxide microsphere. ADVANTAGE - The method is inexpensive, has simple synthesis route, and has mild reaction condition. The raw materials are easy to obtain.