▎ 摘　　要

NOVELTY - Preparing manganese oxide nano electrode comprises (a) dissolving manganese acetate in deionized water, adding polyethylene glycol and nano-graphene, stirring, fully mixing, adding potassium permanganate solution to obtain a mixed solution, heating the mixed solution at 80degrees Celsius for 30 minutes, filtering, washing, drying, calcining to obtain manganese oxide/nano- graphene composite material and (b) mixing the manganese oxide /nano-graphene composite material with polytetrafluoroethylene and absolute ethyl alcohol uniformly, heating to obtain the paste composite, compressing the composite to the titanium net by a tablet machine, heating, boiling for 60-90 minutes, taking out and drying to obtain the manganese oxide nano-graphene electrode. USE - The manganese oxide nano electrode is useful in treatment of wastewater containing tetracycline hydrochloride (claimed). ADVANTAGE - The method ensures that the manganese oxide electrode has stable structural properties; obtains less raw materials and is convenient and easy-to-obtain reagents. The composite electrode has high degradation rate for treating wastewater containing tetracycline hydrochloride and can be used for the degradation of multiple antibiotics; does not produce secondary pollution and can be reused.