▎ 摘　　要

NOVELTY - Preparation method of S-graphite carbon nitride and graphene oxide photocatalyst, which involves: i. adding crucible filled with melamine into a high-energy microwave oven for thermal polycondensation reaction for 8-10 minutes to obtain pale yellow sulfur-doped carbon nitride powder; ii. dispersing 1 pts. wt. carbon nitride powder and 1-2 pts. wt. sodium sulfate or sodium thiosulfate in pure water, ultrasonically treating the mixture for 1.5-2.2 hours; iii. centrifuging, washing and drying the above-mentioned ultrasonically treated mixed solution to obtain sulfur-doped carbon nitride; iv. dissolving sulfur-doped carbon nitride and graphene oxide into pure water, and stirring for 1-1.5 hours; v. adding above-mentioned stirred mixed solution into the reactor, and carrying out a solvothermal reaction at a temperature of 160-180 °C for 8-10 hours; and vi. cooling the reaction kettle naturally to room temperature. USE - Preparation method of S-graphite carbon nitride and graphene oxide photocatalyst used in the field of environmental catalysis such as photodegradation of organic dyes and antibiotics. ADVANTAGE - Preparation process of the nano composite photocatalyst is simple, the technical problems that the photocatalysis technology is limited by weak light absorption capacity and high recombination rate of photon-generated carriers are solved, and the high-activity photocatalyst obtained by the scheme has very important significance for the practical application of carbon nitride. DETAILED DESCRIPTION - Preparation method of S-graphite carbon nitride and graphene oxide photocatalyst, which involves: i. adding crucible filled with melamine into a high-energy microwave oven for thermal polycondensation reaction for 8-10 minutes to obtain pale yellow sulfur-doped carbon nitride powder; ii. dispersing 1 pts. wt. carbon nitride powder and 1-2 pts. wt. sodium sulfate or sodium thiosulfate in pure water, ultrasonically treating the mixture for 1.5-2.2 hours; iii. centrifuging, washing and drying the above-mentioned ultrasonically treated mixed solution to obtain sulfur-doped carbon nitride; iv. dissolving sulfur-doped carbon nitride and graphene oxide into pure water, and stirring for 1-1.5 hours; v. adding above-mentioned stirred mixed solution into the reactor, and carrying out a solvothermal reaction at a temperature of 160-180 °C for 8-10 hours; and vi. cooling the reaction kettle naturally to room temperature, the nanocomposite material of sulfur-doped carbon nitride and graphene nitride is obtained after centrifugation, washing and drying.