摘要：Novel visible-light-induced 2H-MoS_2/Bi_2WO_6 composites were prepared by an impregnation method. The structure, morphology, optical and electronic analysis of the samples were investigated by XRD, FT-IR, XPS, TEM, DRS, PL, and photoelectrochemical measurements. The ESR technique and radicals trapping experiment were applied to confirm the possible reaction mechanism. And the photocatalytic property of the 2H-MoS_2/Bi_2WO_6 composites was evaluated sufficiently by using methylene blue as the target contaminant. The results showed that the introduction of 2H-MoS_2 boosted the photocatalytic performance of Bi_2WO_6, and the concentration of 2H-MoS_2 impacted the photocatalytic performance of Bi_2WO_6 obviously. The 3 wt% 2H-MoS_2/Bi_2WO_6 composites showed the best photocatalytic activity. The spectrums of DRS, PL and photocurrent showed that the introduction of 2H-MoS_2 improved the separation rate of photoinduced carriers, and thus enhanced the photocatalytic property.
