A facile hydrothermal synthesis of visible-light responsive BiFeWO6/MoS2 composite as superior photocatalyst for degradation of organic pollutants

In the present study, we have fabricated a new Z-scheme BiFeWO6/MoS2 composite for photocatalytic elimination of organic contaminants from the waste-water. A series of BiFeWO6/MoS2 composites were obtained by changing the amounts of BiFeWO6 from 1 to 10 mg through a facile hydrothermal method. The phase structures and morphologies of these BiFeWO6/MoS2 composites were analyzed by SEM, HR-TEM, XRD, UV-vis DRS, element mapping and XPS techniques. Afterward, the dye-degradation experiments were conducted for the removal of Rhodamine B (RhB) using as-obtained BiFeWO6/MoS2 composite samples under visible-light illumination to evaluate their photocatalytic activity. It is found that the BiFeWO6/MoS2 composites exhibited great photocatalytic behavior than the pure BiFeWO6 and MoS2 samples. In particular, the BiFeWO6/MoS2 composite with 5 mg of BiFeWO6 showed a quickly complete photocatalyst degradation ability of RhB in 75 min with high photo-stability and reusability behavior. This superior catalytic response of BiFeWO6/MoS2 composite may be contributed by its high light harvesting capacity as well as fast separation and movement of photo-generated electron-hole pairs. This proposed BiFeWO6/MoS2 composite is a very promising photocatalyst for environmental remediation work.