Dual II Heterojunctions Metallic Phase MoS /ZnS/ZnO Ternary Composite with Superior Photocatalytic Performance for Removing Contaminants.

Fabricating a high-performance photocatalyst to efficiently solve serious environmental problems is an urgent affair. Herein, a series of MoS /ZnO composites were successfully fabricated through a facile hydrothermal route using Na MoO , (NH ) CS and urchin-like ZnO as precursors. According to the results of XRD and XPS, it was found that ZnS appeared in MoS /ZnO composite; meanwhile, the content was positively correlated with the weight of the precursor (NH ) CS. It should be noted that the morphology and the metallic phase content of MoS grown in situ on the surface of ZnO were affected by the molar ratio of Na MoO and ZnO. Benefiting from the special dual II heterojunctions of MoS /ZnS/ZnO ternary composite, the material exhibited excellent charge separation and transfer performances. In the photocatalytic measurements, the MoS /ZnS/ZnO (Na MoO :ZnO 1:2 MZ2) composite not only exhibits excellent photocatalytic Cr reduction activity of 42.3×10  min , but also displays remarkable adsorption performance (nearly 32.1 %) for Cr . In addition, the ternary composite shows dominant photocatalytic Cr reduction activities compared to other photocatalysts. This work provides a high-efficient MoS /ZnS/ZnO ternary photocatalyst for environmental treatment.