MoSe-WS Nanostructure for an Efficient Hydrogen Generation under White Light LED Irradiation.

In this work, MoSe-WS nanocomposites consisting of WS nanoparticles covered with few MoSe 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-WS is evaluated under the white light LED irradiation. Under LED illumination, the highest PHE of MoSe-WS nanocomposite is 1600.2 µmol g h. When compared with pristine WS, the MoSe-WS nanostructures demonstrated improved PHE rate, which is 10-fold higher than that of the pristine one. This work suggests that MoSe-WS could be a promising photocatalyst candidate and might stimulate the further studies of other layered materials for energy conversion and storage.