A novel S-scheme Ws/BiYWO electrostatic heterostructure for enhanced photocatalytic degradation performance towards the degradation of Rhodamine B.

Constructing S-scheme heterojunction between two semiconductor materials is an effective route to increase the photocatalytic degradation efficiency. Here, a novel S-scheme WS/BiYWO heterojunction photocatalyst was prepared by wet chemical route. At the same time, the photocatalytic degradation performance of the fabricated materials was analyzed by the degradation of Rhodamine B under visible light. Of all prepared WS/BiYWO composites, the 20 wt.% WS loaded WS/BiYWO composite exhibited an enhanced photocatalytic degradation ability than other prepared photocatalysts. Here, O and OH radicals are performing a pivotal role in the Rhodamine B degradation and the optimized composite shows greater photocurrent intensity than pure BiYWO and WS, respectively. Also, the synthesized photocatalyst maintains its stability with negligible changes even after three cycles. Thereby, the constructed S-scheme WS/BiYWO heterojunction is a potential material for the wastewater remediation.