▎ 摘　　要

NOVELTY - Preparation of magnetic reduced graphene oxide aerogel, involves, under the synergistic initiation of polyvinyl alcohol and trivalent iron ion, self-assembling graphene oxide to obtain polyvinyl alcohol/graphene oxide/trivalent iron ion hydrogel, freeze-drying the hydrogel to obtain an aerogel, reducing the aerogel using an alkali metal borohydride to obtain a magnetic reduced graphene oxide hydrogel, and freeze-drying the hydrogel. USE - Preparation of magnetic reduced graphene oxide aerogel used in absorbing material used for removing heavy metal ions e.g. divalent cadmium and/or divalent lead in wastewater (all claimed). ADVANTAGE - The method provides magnetic reduced graphene oxide aerogel, which has excellent adsorption activity with respect to divalent cadmium and divalent lead, and magnetic response, and can be solid-liquid separated by external magnetic field. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for removal of heavy metal ion in wastewater, which involves adding the magnetic reduced graphene oxide aerogel to wastewater, absorbing under the action of an external magnetic field, and separating the aerogel absorbed with the heavy metal ion.