▎ 摘　　要

NOVELTY - The preparation method of graphene oxide-modified filter involves weighing 4 l 98% concentrated sulfuric acid, 20 g graphite, 10 g sodium nitrate and 6 g potassium permanganate and then heating at 35 degrees C for 30 minutes, adding 1 l deionized water to the mixture and then heating at 98 degrees C for 15 minutes, adding 1 l 30% hydrogen peroxide and 7 l 5 wt.% hydrochloric acid to the mixture and then centrifuging, adding deionized water to the mixture and then centrifuging at 7000 rpm for 10 minutes, adding 0.5-1 l heptane, 0.5-1 l silicone resin, 0.05-0.1 l polyurethane prepolymer and 5-10 g curing agent to the mixture and then heating at 220 degrees C and packaging. USE - The method is useful for preparation of graphene oxide-modified filter, which is useful for air conditioner. ADVANTAGE - The method enables preparation of graphene oxide-modified filter with excellent hydrophobicity, electrostatic adsorption effect, air purification effect and durability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene oxide-modified filter prepared by the method.