Preparation of MoS2–reduced graphene oxide (rGO) hybrid paper for catalytic applications by simple exfoliation–costacking

Abstract

MoS2–graphene oxide (GO) hybrids of different compositions were prepared in the form of a few micron thick flexible paper by a simple ambient condition evaporation of a mixture of colloidal dispersions of ammoniated MoS2 and GO. These, on thermal reduction at 400 °C, convert to MoS2–reduced graphene oxide (rGO) hybrids, retaining the macroscopic paper-like structure. These hybrids act as efficient photocatalysts for organic dye degradation and catalyze the reduction of nitrocompounds by sodium borohydride almost as well as 1T–MoS2. MoS2 is present in both 1T and 2H forms in the hybrids. As the rGO content increases, the hybrid gets richer in 1T–MoS2, leading to increased catalytic efficiency.