Preparation method and application of samarium cuprate nano-photocatalytic powder

The invention relates to the technical field of photocatalysis and discloses a preparation method and application of samarium cuprate nano-photocatalytic powder. Preparation is performed by adopting an improved electrostatic spinning method and an electric field. The method is low in sintering temperature, and the samarium cuprate (Sm2CuO4) nano-powder is high in purity, uniform in particle size and large in specific surface area and has excellent photocatalytic performance on malachite green. The preparation method provided by the invention is easy to operate and low in cost; the preparationconditions are mild, and the condition that impurities are introduced or losses of metallic materials are caused is avoided; and the stoichiometric ratio of metal ions in precipitates can be ensured,and the method can be popularized and applied to industrial production. The prepared samarium cuprate nano-photocatalytic powder can serve as a photocatalyst and is applied to treatment of malachite green containing industrial