▎ 摘　　要

NOVELTY - Preparing porous graphene involves dissolving ferrocene, cobaltocene or nickelocene with ethanol solution, adding aqueous solution of graphene oxide, dispersing it in the reactor after ultrasonic dispersion, and placing a permanent magnet in the reactor vertically in advance. The product after reaction in the reaction kettle is suction filtered, washed with ethanol until colorless, freeze-dried, and the product is moved to a carbonization furnace for heat treatment. The heat-treated product is washed with a dilute acid solution, stirred and filtered with suction, washed with water until neutral, and dried to obtain porous graphene. USE - Method for preparing porous graphene in a magnetic field environment (claimed). ADVANTAGE - The porous graphene prepared by the method has a uniform pore size, and can be adjusted in the range of multiple nanometers to hundreds of nanometers according to needs. The pore size distribution range is large. The method has simple process, high preparation efficiency, low cost, and is suitable for large-scale industrial production.