▎ 摘　　要

NOVELTY - Preparation of reticulated magnetic graphene oxide involves (1) dissolving ferric chloride hexahydrate, sodium acetate and polyethylene glycol in ethylene glycol, stirring, using solvothermal reaction, washing with water at least 3 times under magnetic field, vacuumizing, preparing superparamagnetic iron oxide nanoparticles, (2) dispersing the superparamagnetic iron tetroxide nanoparticles in an aqueous ethanol solution, ultrasonically processing, adding aqueous ammonia solution and silicon source under stirring, continuing stirring, washing at least 3 times under the action of magnetic field, vacuumizing to obtain iron oxide/silicon dioxide nanoparticles, (3) dispersing iron oxide/silicon dioxide nanoparticles and graphene oxide in water, mixing to form a suspension, adding silane coupling agent in drops while stirring, washing with water at least 3 times under magnetic field and freeze-drying. USE - Preparation of reticulated magnetic graphene oxide used for removing heavy metals such as lead and cadmium from wastewater (claimed). ADVANTAGE - The process produces magnetic graphene oxide having high adsorption capacity for heavy metals. The solvent extraction method uses solvents, which are nontoxic and do not cause secondary pollution. The magnetic graphene oxide is recyclable and environmentally-friendly, and can be recovered easily. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for removing heavy metals from wastewater, which involves adjusting the pH of the wastewater to 4-8, adding 50-80 mg reticulated magnetic graphene oxide to 100 mL wastewater and processing for 3-6 hours.