▎ 摘　　要

NOVELTY - Method for preparing a metal-supported catalyst, involves(1) dispersing graphene oxide in 100ml of deionized water, and performing ultrasonic treatment to obtain graphene oxide dispersion liquid, respectively dissolving cerium nitrate and manganese nitrate in 100ml of deionized water to prepare cerium nitrate solution and a manganese nitrate solution dropwise adding a manganese nitrate solution into a cerium nitrate solution under a stirring condition to obtain a mixed solution, (2)dropwise adding mixed solution into the graphene oxide dispersion liquid under stirring condition, and after dropwise adding is finished and stirring is continued for 0.5-1h, carrying out ultrasonic treatment for 0.5-1 h, (3)filtering to obtain a filter cake, and drying the filter cake, (4) roasting and activating dried filter cake under vacuum condition, and then naturally cooling to obtain filter cake. USE - Method for preparing a metal-supported catalyst used for ozone oxidation treatment of wastewater (claimed). ADVANTAGE - The metal-loaded catalyst can effectively improves catalytic oxidation efficiency of ozone, improve the utilization rate of ozone, and realize the enrichment and efficient removal of pollutants.