▎ 摘　　要

NOVELTY - A graphene oxide solution having concentration of 2-5 %mass is added to a chitosan solution having concentration of 2-4 %mass and stirred, to obtain homogeneous mixture of graphene/chitosan mixture solution having graphene oxide content of 6-30%. Glutaraldehyde is slowly added to graphene/chitosan mixture solution, stirred and crosslinked at 60-100 degrees C for 1-4 hours, frozen in vacuum freeze drier, and freeze-dried for 24 hours or more, to obtain graphene/chitosan porous sponge material having three-dimensional structure. USE - Preparation of graphene/chitosan porous sponge material (claimed). ADVANTAGE - The method enables preparation of graphene/chitosan porous sponge material having high porosity, absorption rate and stability.