▎ 摘　　要

NOVELTY - Nitrogen-doped graphene three-dimensional macroscopic catalyst comprises 0.225-1.800 mol/l nitrogen source and 2-5 mg/l carbon source. USE - Used as nitrogen-doped graphene three dimensional macroscopic catalyst. ADVANTAGE - The catalyst solves the problems of poor performance of the carbon material catalyst caused by low non-metallic doping amount and difficulty in recycling. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing nitrogen-doped graphene three dimensional macroscopic catalyst comprising (a) taking carbon source and nitrogen source, uniformly dispersing in the aqueous solution to obtain a mixture aqueous solution containing nitrogen, carbon, transferring it to the glass small pipe and sealing the nozzle, (b) heating the glass small pipe containing nitrogen and carbon mixture aqueous solution heat preservation for a period of time, taking out, naturally cooling, using ultra-pure water to wash and removing the impurity and (c) vacuum freezing and drying the carbon material in the freeze dryer to obtain nitrogen-doped graphene macroscopic catalyst.