▎ 摘　　要

NOVELTY - Method for preparing a nitrogen-doped iron-based graphene gel, involves mixing graphene oxide, an iron salt, and urea in a solvent to obtain a mixed solution and reacting the obtained mixed solution to obtain the nitrogen-doped iron-based graphene gel. USE - The method is used for preparing a nitrogen-doped iron-based graphene gel, which is used in the control of environmental pollution (all claimed). ADVANTAGE - The method is simple and easy to popularize, avoids the use of a toxic crosslinking agent, produces graphene gel with excellent Fenton catalytic degradation performance for pollutants, and easily separates and recycles the graphene gel.