▎ 摘　　要

NOVELTY - Carbon catalyst comprises sulfur and nitrogen with doped iron. The preparation of carbon catalyst involves forming spherical organic ligand skeleton to surround the iron precursor, bonding graphene sheet bonded to the outside of the organic ligand skeleton and bonding carbon nanofibers to the outside of the organic ligand skeleton. The organic ligand skeleton includes polymer composed of a zinc-dithiooxamide complex, a zinc-thioacetamide complex and a polymer composed of a zinc-thiocarbamide complex. USE - Carbon catalyst used in sensor which includes dopamine detection sensor, ascorbic acid detection sensor, phenol detection sensor, hazardous material detection sensor, heavy metal detection sensor, glucose detection sensor, immune sensor or an enzyme sensor (all claimed). ADVANTAGE - The carbon catalyst has excellent reduction capacity.