A novel S-scheme Ws2/BiYWO6 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 WS2/BiYWO6 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 WS2/BiYWO6 composites, the 20 wt.% WS2 loaded WS2/BiYWO(6)composite exhibited an enhanced photocatalytic degradation ability than other prepared photocatalysts. Here, O-2(center dot)- and (OH)-O-center dot radicals are performing a pivotal role in the Rhodamine B degradation and the optimized composite shows greater photocurrent intensity than pure BiYWO6 and WS2, respectively. Also, the synthesized photocatalyst maintains its stability with negligible changes even after three cycles. Thereby, the constructed S-scheme WS2/BiYWO6 heterojunction is a potential material for the wastewater remediation.

Automated summary

Constructing S-scheme heterojunction between two semiconductor materials is an effective route to increase the photocatalytic degradation efficiency. A novel S-scheme WS2/BiYWO6 heterojunction photocatalyst was prepared by wet chemical route, and its photocatalytic degradation performance was evaluated by analyzing the degradation of Rhodamine B under visible light. The 20 wt.% WS2 loaded WS2/BiYWO(6) composite exhibited enhanced photocatalytic degradation ability, with O-2(center dot)- and (OH)-O-center dot radicals playing a crucial role in the degradation process.