Two-dimensional CuS/MoS2 heterostructure with high photocatalytic activity had been successfully obtained by a simple combination of wet chemical method and hydrothermal process. CuS nanosheets had been successfully grown on the two-dimensional MoS2 nanosheets uniformly and tightly. The obtained heterostructures were well characterized through X-ray diffraction patterns, transmission electron microscopy, Fourier transform infrared spectra, ultraviolet-visible diffuse-reflectance spectra, and Zeta potential measurement. Photocatalytic performance of the CuS/MoS2 nanocomposite was evaluated toward the decomposition of methylene blue solution under natural light. The as-prepared nanocomposite showed remarkably enhanced photocatalytic activity compared with pure CuS and MoS2. This could be attributed to the enhanced dyestuff absorption and charge transport after the conjugation between CuS and MoS2.
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