▎ 摘　　要

NOVELTY - A graphene oxide material comprises graphene compound (I). The edge of graphene oxide is linked with carboxyl group and hydroxyl group. USE - Graphene oxide material is used for magnetic composite material for water treatment (all claimed). ADVANTAGE - The magnetic composite material containing graphene oxide material effectively absorbs organic dye, arsenic and polybrominated aromatic hydrocarbon. DETAILED DESCRIPTION - A graphene oxide material comprises graphene compound of formula (I). The edge of graphene oxide is linked with carboxyl group and hydroxyl group. An INDEPENDENT CLAIM is included for magnetic composite material, which is obtained by adding sodium nitrate and potassium permanganate using concentrated sulfuric acid, to obtain graphene oxide, mixing magnetic particles solution and graphene oxide, dispersing, and adding 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide and N-hydroxysuccinimide.