▎ 摘　　要

NOVELTY - A nitrogen oxide degradation film comprises cerium acetylacetonate, barium acetylacetonate, potassium fluoride, melamine and graphene, and is prepared by mixing cerium acetylacetonate, barium acetylacetonate, potassium fluoride, and melamine by a sol-gel method to obtain fluorine and nitrogen co-doped barium cerium oxide, mixing graphene and fluorine and nitrogen co-doped barium cerium oxide to obtain a precursor powder, and casting into film. USE - Nitrogen oxide degradation film (claimed). ADVANTAGE - The nitrogen oxide degradation film is prepared with high efficiency and stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of nitrogen oxide degradation film, which involves reacting cerium acetylacetonate, and barium acetylacetonate to obtain fluorine and nitrogen co-doped barium cerium oxide powdered solid object, ball milling fluorine and nitrogen co-doped barium cerium oxide powdered solid object, mixing with graphene at room temperature for 12-18 hours to obtain a homogeneous precursor powder, pouring and molding the precursor powder, and calcining the molded sheet at 500 degrees C for 5 hours under a nitrogen atmosphere.