▎ 摘　　要

NOVELTY - Methylene blue catalysis involves taking 25-100 mg/l of methylene blue aqueous solution, where 77-91 wt.% of graphene oxide-manganese oxide nanocomposite and hydrogen peroxide are added. A catalytic oxidation reaction is accomplished at 25-50 degrees C, where mass concentration of hydrogen peroxide is 30%. USE - Method for catalyzing methylene blue by using graphene oxide-manganese oxide nanocomposite (claimed). ADVANTAGE - The catalyzes methylene blue having high catalytic activity, fast degradation speed and degradation rate, and saves energy.