▎ 摘　　要

NOVELTY - An air catalyzing and purifying method involves preparing graphene oxide suspension by putting graphene oxide into a container, adding water, and centrifuging to obtain graphene oxide suspension. Graphene aerogel is prepared by adding polyethyleneimine to the graphene oxide suspension, reacted at 95 degrees C for 5 hours, and washing with deionized water to remove surface impurities at -50 degrees C, pressure of 0.02 mbar and freezing for70 hours followed by coating graphene aerogel on the inner wall of the purification device to perform air purification. USE - Method for catalyzing and purifying air. ADVANTAGE - The method enables catalyzing and purifying air by using device with better purifying effect. DETAILED DESCRIPTION - An air catalyzing and purifying method involves preparing graphene oxide suspension by putting graphene oxide into a container, adding water, and ultrasonically at a frequency of 20-25 kHz for 30-45 minutes, and centrifuging to obtain graphene oxide suspension. Graphene aerogel is prepared by adding polyethyleneimine to the graphene oxide suspension, reacted at 95 degrees C for 5 hours, and washing with deionized water to remove surface impurities at -50 degrees C, pressure of 0.02 mbar and freezing for70 hours followed by coating graphene aerogel on the inner wall of the purification device to perform air purification. An INDEPENDENT CLAIM is also included for a device for catalyzing and purifying air.