MoSe(2)-WS(2) Nanostructure for an Efficient Hydrogen Generation under White Light LED Irradiation

In this work, MoSe(2)-WS(2) nanocomposites consisting of WS(2) nanoparticles covered with few MoSe(2) nanosheets were successfully developed via an easy hydrothermal synthesis method. Their nanostructure and photocatalytic hydrogen evolution (PHE) performance are investigated by a series of characterization techniques. The PHE rate of MoSe(2)-WS(2) is evaluated under the white light LED irradiation. Under LED illumination, the highest PHE of MoSe(2)-WS(2) nanocomposite is 1600.2 µmol g(−1) h(−1). When compared with pristine WS(2), the MoSe(2)-WS(2) nanostructures demonstrated improved PHE rate, which is 10-fold higher than that of the pristine one. This work suggests that MoSe(2)-WS(2) could be a promising photocatalyst candidate and might stimulate the further studies of other layered materials for energy conversion and storage.