Sonochemical-assisted synthesis of pure Dy2ZnMnO6 nanoparticles as a novel double perovskite and study of photocatalytic performance for wastewater treatment

Herein, successful synthesis of pure Dy2ZnMnO6 nanoparticles as a new double perovskite was reported. The samples were prepared using various base and surfactants under ultrasound waves (30 W and 20 kHz). The effects of base type and surfactant type as effective parameters on morphology and size of products and the roles of calcination temperature and sonication as operative procedures on purity of products were investigated. According to the results tepa was chosen as favorite base to produce the smallest particles with the most homogeneity and T ≥ 900 °C was considered as desirable calcination temperature for synthesis of pure product. It seemed that high temperature of ultrasound waves can decrease the required calcination temperature, so facilitates the achievement of pure product. Moreover, photocatalytic performance of the prepared product was examined by decolorization of three dyes including Eriochrome Black T, Methyl orange and Methyl violet under UV irradiation. The most and the least percent of degradation were assigned to Methyl violet (90.44%) and Methyl orange (48.39%), respectively. Paramagnetic property of this product was considered as the other advantage for its photocatalytic performance because of it can be easily separated by magnetic field and recycles again.