Abstract
ZnO/SnSe and ZnO/CdSe thin film photocatalysts were prepared by two steps via hydrothermal and thermal evaporation method for the photocatalytic degradation of methylene Blue (MB). UV/Vis spectrometer, XRD, SEM, EDX and PL were used to study the structural,morphological and optical characteristics of the deposited thin films. ZnO nanorods, ZnO/SnSe and ZnO/CdSe heterostructures were tested for the photocatalytic degradation of MB. Among these ZnO/SnSe heterostructure yielded a better performance as a photocatalyst. With the ZnO/SnSe thin film photocatalyst owing to its high charge separation efficiency, the best photocatalytic efficiency of 88% was attained in 150 min. This study confirms an improved photocatalytic efficiency of, ZnO/SnSe and ZnO/CdSe thin film heterostructures compared to ZnO nanorod arrays.
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