▎ 摘　　要

NOVELTY - Preparing nitrogen and sulfur co-doped graphene supported cobalt catalyst comprises (i) preparing graphene oxide, (ii) mixing the graphene oxide and cobalt chloride and dispersing, grounding and mixing with a nitrogen source and a sulfur source to obtain a mixture, and calcining at 650-900degrees Celsius under the protection of an inert gas to reduce the graphene oxide and making the two have a solid phase reaction, obtaining the graphene loaded cobalt composite material, where the mass ratio of the graphene oxide and cobalt chloride is 1:0.5-3, and in step (iii), purifying the product to obtain a nitrogen-sulfur co-doped graphene supported cobalt catalyst. USE - The method for preparing the catalyst useful for activating persulfate and degrading organic matter (claimed). ADVANTAGE - The catalyst has high degradation rate, short processing time, lower relative cost, can be recycled and has the advantages of high recovery rate and good cycle stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for nitrogen-sulfur co-doped graphene attached cobalt catalyst, obtained by the method as mentioned above.