MoS2/RGO hybrids prepared by a hydrothermal route as a highly efficient catalytic for sonocatalytic degradation of methylene blue

In this paper, the MoS2/RGO hybrids were successfully prepared via a one-pot hydrothermal. The MoS2/RGO was used for sonocatalytic degradation of methylene blue (MB) for the first time. It exhibited high sonocatalytic performance under ultrasound (US) irradiation than that of pure MoS2. Then the MoS2/RGO hybrids are well analyzed by various spectroscopic techniques such as TGA, X-Ray Diffraction, XPS, TEM, Raman, PL, UV-Vis and DRS etc. Furthermore, the sonocatalytic-degradation mechanism is discussed. The enhanced sonocatalytic performance of MoS2/RGO composites can be put down to that the heterojunction structure of MoS2/RGO can heighten the separation efficiency of the electron-hole pairs. The TEM images of the MoS2/RGO reveal that the RGO nanosheets had inserted into MoS2 layers. Thus, the template growth method based on GO expanded the interlayers of MoS2 so that it exposed a greater fraction of the catalytically active sites to offer a large surface area and improve the electronic conduction efficiency. This work provides an evidence that the MoS2/RGO possesses enormous potential in sonocatalytic applications.