▎ 摘　　要

NOVELTY - Preparation of tricobalt tetroxide-nickel monoxide-graphene aerogel catalyst, involves stirring and dispersing graphene oxide in deionized water to obtain a graphene oxide aqueous solution, dripping aqueous ammonia to graphene oxide aqueous solution to adjust the pH, stir-mixing to obtain mixed solution (A), stirring and dispersing a cobalt salt and a nickel salt in deionized water to obtain mixed solution (B), dripping solution (B) in solution (A), stirring, ultrasonically dispersing to obtain a mixed dispersion, pouring the dispersion to a lined hydrothermal reactor, hydrothermally reacting to obtain a tricobalt tetroxide-nickel monoxide-graphene hydrogel, taking the hydrogel from the furnace, adding to deionized water for aging, replacing the deionized water for solvent replacement for every set time period, taking out the sample, and freeze-drying. USE - Preparation of tricobalt tetroxide-nickel monoxide-graphene aerogel catalyst for combustion of volatile organic compounds. ADVANTAGE - The method provides catalyst having excellent combustion efficiency. The load of nano-oxide particles plays a role of catalysis while improving the agglomeration between the graphene layers. More catalytic activity sites are provided for the active component. The dispersibility of active oxide nanoparticles is improved. The active component fully contacts the reactant. The synergistic effect of each component in the composite catalyst material effectively solves the defect of single component material, to greatly improve the catalytic efficiency. The obtained catalyst has a specific surface area of 123-158 m2/g, and a toluene catalytic conversion rate of 86-95% at a toluene sampling flow rate of 6 mL/hour, a carrier gas nitrogen flow rate of 30 mL/minute, normal pressure, and a temperature of 250 degrees C.