Constructing Z-scheme structure by loading BiOBr with (010) exposure on the surface of MoS2 and its enhanced photocatalytic property for degrading RhB

In this study, MoS2/BiOBr composite semiconductor material with Z-Scheme structure was constructed by a simple two-step hydrothermal method. MoS2 was first synthesized and then BiOBr with (010) exposure was loaded on its surface to obtain the composite. The MoS2/BiOBr composites showed significantly enhanced photocatalytic activity for degrading RhB under the irradiation of visible light, and degradation rate of the 1 wt% MoS2/BiOBr photocatalyst reached more than 96% within 30 min and even kept 85.9% after three reuses. Trapping experiments demonstrated that h+ and ·O2− were the main active substances. Further experiments, calculation, and analysis confirmed that the formation of Z-Scheme structure between MoS2 and BiOBr promoted the improvement of photocatalytic efficiency.