▎ 摘　　要

NOVELTY - Graphene loaded cobaltous oxide catalyst preparation involves preparing cobalt (II) acetate aqueous solution and a graphene oxide aqueous solution, and then mixing the prepared aqueous solutions under magnetic stirring to obtain mixed solution A. Ammonia water is dropwise added into the mixed solution A under magnetic stirring to obtain mixed solution B. The mixed solution B is filled into a high-pressure reaction kettle with a polytetrafluoroethylene lining for conducting hydrothermal reaction for 10-14 hours at 160-190 degrees C to obtain a mixture. USE - Method for preparing graphene loaded cobaltous oxide catalyst for catalyzing carbon monoxide low-temperature oxidation (all claimed). ADVANTAGE - The graphene loaded cobaltous oxide catalyst completely oxidizes carbon monoxide into carbon dioxide at 100 degrees C and thus the carbon monoxide can be completely converted into the carbon dioxide for 3000 minutes at 100 degrees C. DETAILED DESCRIPTION - Graphene loaded cobaltous oxide catalyst preparation involves preparing cobalt (II) acetate aqueous solution and a graphene oxide aqueous solution, and then mixing the prepared aqueous solutions under magnetic stirring to obtain mixed solution A. Ammonia water is dropwise added into the mixed solution A under magnetic stirring to obtain mixed solution B. The mixed solution B is filled into a high-pressure reaction kettle with a polytetrafluoroethylene lining for conducting hydrothermal reaction for 10-14 hours at 160-190 degrees C to obtain a mixture. The obtained mixture is treated through speed centrifugal separation to remove supernatant liquor, where the residual solid matter is transferred to a drying oven after washing. The washed residual solid matter is dried for 8 hours at 60 degrees C to prepare graphene loaded cobaltous oxide catalyst. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic transmission electron microscopic photograph of the graphene loaded cobaltous oxide catalyst.