▎ 摘　　要

NOVELTY - Graphene composite material based method for preparing formaldehyde purifying agent, involves (1) grinding tourmaline powder, adding bamboo vinegar solution to a high-mixing machine, ultrasonically grinding carboxymethyl cellulose and jasmine essential oil to obtain modified mixed powder, (2) stirring and mixing methyltriethoxysilane and total deionized water, ultrasonically dispersing, adding graphene, (3) mixing and stirring the obtained zinc acetate dispersion liquid and the obtained butyl titanate dispersion, aging, drying, and finally calcining to obtain a nano-zinc oxide/nano-titanium dioxide composite material, (4) adding mesoporous metal framework nanocarrier material to the graphene homogeneous solution, stirring to obtain a precursor solution, adding hydrazine hydrate solution, modified mixed powder, nano-zinc oxide/nano titanium dioxide composite material to the precursor solution, and heating and refluxing to form a solution, filtering and drying. USE - Graphene composite material based method for preparing formaldehyde purifying agent. ADVANTAGE - The specific surface area of the graphene is improved. The layer stacking effect in the adsorbent is realized. The effect of adsorbing and eliminating formaldehyde is excellent. DETAILED DESCRIPTION - Graphene composite material based method for preparing formaldehyde purifying agent, involves (1) grinding 15-25 parts mass tourmaline powder, adding 60-80 parts mass bamboo vinegar solution to a high-mixing machine for high-speed stirring for 30-40 minutes, cooling to room temperature after high temperature treatment at 750-800 degrees C for 40-50 minutes, ultrasonically grinding 10-15 parts mass carboxymethyl cellulose, 3-5 parts mass jasmine essential oil for 20-30 minutes to obtain modified mixed powder, (2) stirring and mixing 2-4 parts mass methyltriethoxysilane and 3-5 times of total deionized water, ultrasonically dispersing for 25-30 minutes, adding graphene and stirring and mixing, and leaving the mixture still in a water bath at 85-95 degrees C for 10-14 hours to obtain a graphene homogeneous solution, (3) dissolving zinc acetate in an ethanol solvent to obtain a zinc acetate dispersion, the mass ratio of the zinc acetate to the ethanol is 1 g: 10 mL, dissolving butyl phthalate in an ethanol solvent to obtain a butyl titanate dispersion, the mass ratio of the butyl phthalate to ethanol is 1 g: 10 mL, mixing and stirring the obtained zinc acetate dispersion liquid and the obtained butyl titanate dispersion until completely gelled, aging, drying, and finally calcining to obtain a nano-zinc oxide/nano-titanium dioxide composite material, (4) adding 80-90 parts mass mesoporous metal framework nanocarrier material to the graphene homogeneous solution, stirring to obtain a precursor solution, adding 2-5 parts mass hydrazine hydrate solution, modified mixed powder, nano-zinc oxide/nano titanium dioxide composite material to the precursor solution, and heating solution and refluxing at 80-100 degrees C to form a solution, filtering and drying.