▎ 摘　　要

NOVELTY - Preparing biomass-loaded metal-organic frameworks-derived composite catalyst comprises (a) preparing biomass carrier including (a1) collecting biomass, ultrasonically cleaning, drying, storing, (a2) taking the stored biomass, hydrolyzing in sodium hydroxide solution at 50-80℃ for 30 minutes, (a3) cleaning the hydrolysis product of step (a2), soaking in hydrochloric acid solution, (a4) cleaning the hydrochloric acid processing product in step (a3) to neutral, drying, storing to obtain a biomass carrier, which was denoted as graphene walls and (b) preparing composite catalyst including (b1) preparing 2-methylimidazole solution, adding graphene walls, stirring,(b2) preparing cobalt nitrate hexahydrate solution, adding to the solution obtained in step (b1), stirring, reacting, (b3) cleaning the reaction product of step (b2), drying to obtain the precursor and (b4) pyrolyzing the precursor obtained in step (b3) at 500℃ for 4 hours to obtain a composite catalyst. USE - The composite catalyst is useful in catalyzing the degradation of bisphenol A by persulfate (claimed). ADVANTAGE - The method is simple and overcomes the influence of the powder characteristics of the metal-organic frameworks composite material. The composite catalyst inherits the high specific surface area and multiple active sites of metal-organic frameworks; has more stable physicochemical structure and properties and has great significance for the design and preparation of new high-performance catalytic materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a biomass-loaded metal-organic frameworks-derived composite catalyst, which is prepared by the above method.