SULFUR-DOPED S-C3N4 AMMONIA SYNTHESIS CATALYST WITH GRAPHENE-LIKE STRUCTURE AND PREPARATION METHOD THEREFOR

A preparation method for a sulfur-doped S-C3N4 efficient visible light ammonia synthesis catalyst with a graphene-like structure, comprising the following steps: mixing thiourea and urea according to a certain proportion, placing the uniform mixture into a high-temperature porcelain boat and covering the high-temperature porcelain boat with a porcelain boat cover plate; putting the high-temperature porcelain boat into a muffle furnace and calcining under gas atmosphere to obtain the sulfur-doped S-C3N4 catalyst with a graphene-like structure. The prepared sulfur-doped S-C3N4 catalyst with a graphene-like structure has higher visible light ammonia synthesis efficiency. Under normal temperature, normal pressure and visible light or direct solar radiation, the method for reducing N2 into NH3 based on the sulfur-doped S-C3N4 catalyst with a graphene-like structure is a new approach with high potential and promise. L'invention concerne un procédé de préparation d'un catalyseur de synthèse d'ammoniac en utilisant l