▎ 摘　　要

NOVELTY - A nano-magnetic chitosan/graphene bioabsorbent material is prepared by oxidizing graphite powder with presence of mixed acid and strong oxidizer, activating surface to obtain functionalized graphene in which surface has multifunctional groups, i.e. hydroxyl and carboxyl groups, emulsifying, crosslinking to obtain core-shell structured magnetic chitosan, mixing and reacting magnetic chitosan and functionalized graphene, separating using external magnetic field, washing, and drying. USE - Preparation of nano-magnetic chitosan/graphene bioabsorbent material (claimed). ADVANTAGE - The preparation prevents partial agglomeration, enhances absorbing material mechanical stability, increases absorption site, improves absorption speed and amount, and prepared absorbent material has good dispersing property, strong stability, high specific surface area, and no secondary pollution, and is easy to separate.