▎ 摘　　要

NOVELTY - Preparation of graphene-anchored dual-transition metal single-atom synthetic ammonia catalyst, involves adding polyvinyl pyrrolidone, styrene and azobisisobutyronitrile in mixed solution of ethanol and water, stirring under nitrogen and oxygen atmosphere, and vacuum drying after centrifugal washing, stirring and absorbing polystyrene microspheres and transition metal complex (I), centrifuging and washing surface to remove excess transition metal complex, mixing transition metal complex of polystyrene microspheres with defective graphene oxide aqueous solution to form a composite structure of polystyrene microspheres as cores and defective graphene oxide as shells, centrifuging and vacuum drying, dispersing in aqueous solution, adding transition metal salt solution (II), ultrasonically dispersing, high temperature annealing, freezing and drying, soaking in hydrochloric acid solution for specific time to remove transition metal particles, washing to neutral, freezing and drying. USE - Preparation of graphene-anchored dual-transition metal single-atom synthetic ammonia catalyst. ADVANTAGE - The high temperature fire removes polystyrene microspheres, which forms defective graphene hollow inner shell layer.