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This research focuses on a novel visible light-responsive photocatalysis system employing MoS 2  and magnetically responsive BiFeO 3  for removing dye. Novel BiFeO 3 /MoS 2  magnetic nanocomposite was successfully synthesised by a simple method and characterised by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Uv–Vis diffuse reflection spectra (DRS) and vibrating sample magnetometry (VSM). Comparing with pure BiFeO 3  and MoS 2 , the prepared nanocomposite illustrated notably better photocatalytic activity. The outcome of the photocatalytic experiments depicted that nanocomposite reaches to about 89% removal of Rhodamine B in 200 min under visible light irradiation. The superior photocatalytic activity could be attributed to the high separation efficacy of the photogenerated electron-hole pairs. Moreover, the BiFeO 3 /MoS 2  nanocomposite can be separated and collected easily by an external magnetic field and maintain high activity after three times photoreaction cycles. Trapping experiments have contributed to propose the possible mechanism for the improved photocatalytic activity of the nanocomposite.

Construction of novel magnetic BiFeO 3 /MoS 2 composite for enhanced visible-light photocatalytic performance towards purification of dye pollutants