Journal of Industrial and Engineering Chemistry, Vol.20, No.5, 2964-2968, September, 2014
Photocatalytic degradation of Brilliant Red M5B using four different nanocomposites (ZnFe2O4, porous ZnFe2O4, ZnFe2O4.TiO2, FeTiO3) coated on glass
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This paper presents the preparation, characterization, and application of four different nanocomposites in photocatalytic degradation of the Brilliant Red M5B as a dye contaminant. Nanocomposites include ZnFe2O4, porous ZnFe2O4, ZnFe2O4-TiO2, and FeTiO3 prepared and coated on a glass slide by doctor blade method. Different techniques to characterize composites are X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and diffuse reflectance spectra (DRS). FESEM shows that nanocomposites are nanocrystallines and a narrow dispersion in size. XRD confirms that the prepared nanocomposites are composed of ZnFe2O4, FeTiO3 and TiO2. Degradation efficiency of composites is evaluated using Brilliant Red M5B as a model pollutant under UV irradiation with homemade photocatalytic apparatus. The results showed that the photocatalytic efficiency of ZnFe2O4-TiO2 is higher than that of other photocatalyst, which is mainly ascribed to ZnFe2O4 NPs with the spinel structure.
Keywords:ZnFe2O4;porous ZnFe2O4;ZnFe2O4-TiO2;FeTiO3;Immobilized;Azo textile dye;Nanostructure;Doctor blade;Brilliant Red M5B
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