▎ 摘　　要

NOVELTY - Preparing magnetic nano-graphene oxide, involves using improved Hummers method for preparing oxidized graphite alkene; and using hydro-thermal method for loading ferroferric oxide nano-particle on a surface of a magnetic nano graphene oxide at a pH of more than 9 in an alkaline condition. USE - For preparing magnetic nano-graphene oxide (claimed). ADVANTAGE - The method provides high efficiency; and is environment friendly. The non-corrosive catalyst has excellent catalytic performance and meets requirements of energy saving and emission reduction. The graphene oxide is provided with magnetic, so it is more easy and convenient, and provides fast recovery, where the recovery rate is 99.8%.