Abstract
CuSO4·5H2O and Na2S2O3 were used as the copper and sulfur sources which were mixed with the graphene oxide (GO) solution to synthesize rGO–CuS/Cu2S heteronanostructures by a facile one-pot method. Scanning electron microscopy, transmission electron microscope, and X-ray photoelectron spectroscopy observations show the morphology and elemental distribution of the composites, confirming that CuS/Cu2S heteronanostructures are decorated on the GO sheets. The experimental results of photocatalytic degradation also show that the novel composites exhibit remarkable visible-light photocatalytic activities for methylthionine blue dye degradation whose degradation rate is 96 %. The high visible photocatalytic performances are attributed to photoinduced interfacial charge transfer in the heteronanostructures and their further transfer by rGO sheets. This new composition is expected to show considerable potential applications in water purification.
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Yu, Z., Li, F., Di, H. et al. A facile one-pot method for preparation of the rGO–CuS/Cu2S with enhanced photocatalytic activity under visible light irradiation. J Mater Sci: Mater Electron 27, 5136–5144 (2016). https://doi.org/10.1007/s10854-016-4405-9
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DOI: https://doi.org/10.1007/s10854-016-4405-9