Phosphated 2D MoS2nanosheets and 3D NiTiO3nanorods for efficient photocatalytic hydrogen evolution

An efficient and stable NiTiO3/MoS2-P photocatalyst was prepared with means of hydrothermal and calcination. After optimization, the maximum hydrogen production of the composite sample reached 337.82 mu mol in 5 h. After phosphating NiTiO(3)nanorods and MoS2, the original structure of 3D nanorods and 2D nanosheets was maintained, which forms a tight interface between the two materials. In addition, the heterojunction established in the NiTiO3/MoS2-P composite material resulted in good separation of electrons and holes, thereby improving the photocatalytic efficiency under light conditions. Efficient charge transfer efficiency was also confirmed in photoelectrochemical experiments. Furthermore, photoluminescence spectroscopy experiments have confirmed that the formation of heterojunction between the two semiconductors increases the carrier lifetime of the composite catalyst and has efficient separation efficiency. SEM, TEM, BET, UV-vis DRS and other series of characterization methods were used to characterize the prepared materials.