▎ 摘　　要

NOVELTY - Nanocrystalline silicon carbide/graphene heterojunction prepared by coating outer surface of the silicon carbide nanocrystal with a layer of graphene, and annealing the silicon carbide particle under vacuum or argon gas atmosphere at 1000-1600 degrees C, is claimed. USE - The nanocrystalline silicon carbide/graphene heterojunction is useful in photocatalysis field and dye sensitized solar cells, and for photocatalytic degradation of organic matter and photocatalytic hydrogen production(all claimed).