▎ 摘　　要

NOVELTY - Magnetic graphene oxide preparation involves dissolving iron (III) chloride hexahydrate, iron (II) chloride tetrahydrate and sodium citrate in water to obtain a mixed solution. The mixed solution is added to the uniformly dispersed graphene oxide hydrosol with stirring after completing the dropwise addition. The ammonia water is added to the obtained reaction system, and then cooled the obtained mixture with stirring. The obtained reaction system is cooled at room temperature, and then filtered to collect a solid product. The obtained solid product is washed and dried to obtain the magnetic graphene oxide. USE - Method for preparing magnetic graphene oxide used for adsorbing heavy metal ions in water (claimed). ADVANTAGE - The method prepares the magnetic graphene oxide in a simple, cost-effective and eco-friendly manner with high adsorption capacity, and rapid and high-efficiency adsorption performance for copper (II) in water, and easy separation from water and recyclability under mild reaction conditions. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic scanning electron micrograph of the prepared magnetic graphene oxide.