Abstract
In this work, we report on hydrothermal synthesis, structure, and photocatalytic properties of tin oxide/reduced graphene oxide (SnO2/r-GO) composites. The prepared photocatalysts were characterized by XRD, FTIR, BET, SEM, Uv Vis and EDX analysis. X-ray diffraction (XRD) patterns of the nanocomposites SnO2/r-GO showed the SnO2 tetragonal structure with the diffraction peaks of rGO phase. The Fourier transform infrared spectroscopy shows the dominance of the absorption peaks of SnO2 component over those of the rGO component. The absorption spectra of the SnO2/r-GO samples showed that the enhanced absorption intensity of visible light with SnO2/r-GO. In addition, photocatalytic efficiency via the degradation of methylene blue of the SnO2/rGO nanocomposites is higher than SnO2 nanoparticles under visible light irradiation. The enhanced photocatalytic activity of SnO2/r-GO can be attributed to vectorial electron transfer process in the continuous network of r-GO, synergistic interaction between r-GO and SnO2, unique double layer characteristics and photosensitization process.
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