Excellent photocatalytic performance of few-layer MoS2/graphene hybrids

Abstract MoS 2 /RGO hybrids was successfully synthesized via hydrothermal method. The MoS 2 nanoflakes grown on the surface of the graphene were uniform and compact from the TEM images. Through the HRTEM images, we conclude the layer number of MoS 2 nanoflakes is in the range of 2–6. Photocatalytic experiments have been performed to verify the excellent photocatic performance of MoS 2 /RGO hybrids. The methylene blue (MB) was completely decomposition by MoS 2 /RGO hybrids within 55 and 75 min under the UV and VIS irradiation, respectively. It is much better than the photocatalytic performance of P25 (nano TiO 2 powder, the current commercial photocatalyst), especially under the VIS irradiation. Good photocatalytic stability of MoS 2 /RGO hybrids was proved through the secondary loop test, which further indicates its promising practical applications. We suggest that the excellent photocatalytic capability of MoS 2 /RGO hybrids can be attributed to their enhanced adsorptivity and conductivity because of the synergistic effect between the few layer MoS 2 and the graphene.