![]() This higher photocatalytic degradation activity was due to enhanced charge separation and subsequently the suppression of charge recombination in the SnO 2/ZnO photocatalyst resulting from band offsets between SnO 2 and ZnO. The heterostructure SnO 2/ZnO photocatalyst showed much higher photocatalytic activities for the degradation of methylene blue dye than individual SnO 2, ZnO nanomaterials and reference commercial TiO 2 P25. The photocatalytic activity of the prepared SnO 2/ZnO photocatalyst was investigated by the degradation of methylene blue dye under UV light irradiation. The results showed that the synthesized SnO 2/ZnO nanocomposites possessed mesoporous wurtzite ZnO and cassiterite SnO 2 nanocrystallites. The resulting photocatalysts were characterized by X-ray diffraction (XRD), nitrogen adsorption–desorption analyses, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and UV-vis diffuse reflectance spectroscopy (UV-vis DRS). In this work, heterostructure SnO 2/ZnO nanocomposite photocatalyst was prepared by a straightforward one step polyol method. ![]()
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