▎ 摘　　要

NOVELTY - Directional anchoring of palladium single atoms to rGO/graphitic carbon nitride two-dimensional interface involves using environmentally friendly and pollution-free biomass as raw materials, where the palladium single atom is directionally anchored to the rGO/g-graphitic carbon nitride two-dimensional interface. The silkworm cocoons dried in advance and the iron-based or potassium-based catalyst aqueous solution are heated and stirred to fully react. The product is suction filtered and freeze-dried. The product is calcined at a high temperature of 600-900 degrees C for 1-10 hours under one or more mixed gasses of inert gas, carbon dioxide, hydrogen, and ammonia, and then the temperature is increased to 900-2000 degrees C for 0.5-24 hours, fully stirred the calcined product in an acid solution to remove iron-based or potassium-based compounds, subjected to suction filtration, acid solution washing, water washing, and freeze-dried to obtain biomass-derived graphene. USE - Method for directional anchoring of palladium single atoms to rGO/graphitic carbon nitride two-dimensional interface used in organic catalysis, photocatalysis, electrochemical catalysis, supercapacitors, biosensors, lithium ion battery field (claimed). ADVANTAGE - The method has wide application prospect. DETAILED DESCRIPTION - Directional anchoring of palladium single atoms to rGO/graphitic carbon nitride two-dimensional interface involves using environmentally friendly and pollution-free biomass as raw materials, where the palladium single atom is directionally anchored to the rGO/g-graphitic carbon nitride two-dimensional interface. The silkworm cocoons dried in advance and the iron-based or potassium-based catalyst aqueous solution are heated and stirred to fully react. The product is suction filtered and freeze-dried. The product is calcined at a high temperature of 600-900 degrees C for 1-10 hours under one or more mixed gasses of inert gas, carbon dioxide, hydrogen, and ammonia, and then the temperature is increased to 900-2000 degrees C for 0.5-24 hours, fully stirred the calcined product in an acid solution to remove iron-based or potassium-based compounds, subjected to suction filtration, acid solution washing, water washing, and freeze-dried to obtain biomass-derived graphene. The biomass graphene is heated and stirred in the dicyandiamine aqueous solution to fully react, transferred the solution to the reactor and reacted hydrothermally. The product is suction filtered, washed with water, and freeze-dried to obtain a biomass graphene/dicyandiamine composite material, placed the biomass graphene/dicyandiamine composite material in step 7 in a tube furnace, and perform high-temperature calcination under one or more mixed gasses of inert gas, carbon dioxide, hydrogen and ammonium to obtain a composite material, placed the rGO/g-graphitic carbon nitride in the palladium organic salt solution to fully react until the sample is completely evaporated to dryness. The product is suction filtered, washed with water and dried to obtain product.