▎ 摘　　要

NOVELTY - Preparing heating formaldehyde elimination coating comprises e.g. adding graphene into a mixed solution of ethylene glycol and ammonia borane, ultrasonic dispersing for 1-2 hours, adding palladium(II) chloride solid and ethylene glycol solution, stirring, then adding sodium hydroxide in ethylene glycol solution dropwise to adjust the pH of the solution to 8-11, passing high purity argon for 20 minutes, microwave heating at 140-160 degrees C under argon gas atmosphere, cooling, suction filtrating, washing, drying, adding 60% polytetrafluoroethylene emulsion and ethanol, oscillating the vibration within the ultrasonic wave, and spraying on the bottom of the heating, and drying at room temperature to obtain final product. USE - The method useful for preparing heating formaldehyde elimination coating. ADVANTAGE - The coating has excellent adhesion and stability, low cost, uniform distribution of palladium particles, small particle size, and high catalytic activity. DETAILED DESCRIPTION - Preparing heating formaldehyde elimination coating comprises (i) adding graphene into a mixed solution of ethylene glycol and ammonia borane, ultrasonic dispersing for 1-2 hours, where the volume ratio between ethylene glycol and ammonia borane is 2:1-4:1, and the volume ratio between graphene and mixed solution is 1-2 mg/ml, (ii) dissolving palladium(II) chloride solid into the ethylene glycol solution, and stirring, the concentration of palladium(II) chloride is 1-2 mg/ml, (iii) mixing the above two solutions, controlling the palladium loading to 20-30% of the mass of graphene, stirring for 3-5 hours, then adding 0.5-1 mol L-1 sodium hydroxide in ethylene glycol solution dropwise to adjust the pH of the solution to 8-11, (iv) passing high purity argon for 20 minutes, removing the oxygen in the solution, and microwave heating at 140-160 degrees C under argon gas atmosphere, (v) cooling the product to room temperature, adjusting the pH to 3-4 with 0.5-1 mol L-1 nitric acid, and stirring for 8-12 hours, (vi) suction filtrating using a large amount of deionized water, washing, and drying in a vacuum oven at a constant temperature of 80 degrees C for 3-5 hours to obtain formaldehyde remover, (vii) adding formaldehyde remover into solvent, adding formaldehyde remover and 60% polytetrafluoroethylene emulsion into the container, the weight ratio between formaldehyde remover and 60% polytetrafluoroethylene emulsion is 3:1, adding ethanol to a container containing a formaldehyde remover and a polytetrafluoroethylene solution, evenly oscillating the vibration within the ultrasonic wave to obtain formaldehyde remover slurry, and (viii) spraying the formaldehyde remover slurry on the bottom of the heating, and drying at room temperature to obtain final product.