▎ 摘　　要

NOVELTY - Preparing ozone catalyst, comprises (i) dissolving potassium permanganate in deionized water, and stirring continuously for 10-30 minutes to obtain manganese source solution A with a mass concentration of 5%, (ii) ultrasonically dispersing graphene oxide in deionized water, adding rare earth metal additive, and ultrasonicating for 30 minutes to obtain graphene oxide dispersion B with a mass concentration of 0.3-1%, (iii) mixing the above solution A and dispersion B, and reacting in a hydrothermal kettle at 100-140 degrees C for 1-3 hours, where the mass ratio of graphene oxide to potassium permanganate is 1:40-1:15, and (iv) filtering the obtained precipitate, washing, drying at 60-100 degrees C, and treating with ozone in a tube furnace for 1 hour to obtain an ozone catalyst, where graphene oxide is used as a reducing agent, manganese dioxide is used as an active component, and a rare earth element is used as a catalytic promoter. USE - The ozone catalyst is useful for removing odor (claimed). ADVANTAGE - The method: produces ozone catalyst having increased specific surface area and improved catalytic activity; has simple process; and is suitable for large-scale production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) ozone catalyst prepared by the above method; and (2) use method of the ozone catalyst for removing odor, where methyl mercaptan ozone degradation performance is tested in a fixed bed device under the following test conditions including total gas flow rate of 100 ml/minute, a reaction temperature of 25 degrees C, methyl mercaptan initial concentration of 100 ppm, ozone initial concentration of 500 ppm and balance amount of air, and 0.1 g of catalyst.