Fabrication And Photocatalytic Activity Of Fishbone-like PbMoO4 Via Separation-assembly Coupling Technique Based On A Supported Liquid Membrane System

Abstract

Abstract. Self-assembly fishbone-like PbMoO 4 were fabricated via separation of Pb 2+ from plumbeous solution and combining with MoO 4 2-in another solution containing organic dye, based on a supported liquid membrane (SLM) system. The photocatalytic activity of PbMoO 4 to degrade the organic dye was measured, which revealed that the PbMoO 4 was efficient and stable photocatalyst for degradation of both Rhodamine B (RhB) and Methylene Blue (MB) under the irradiation of ultraviolet light. The PbMoO 4 after photocatalytic measurement were collected and characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV-vis spectroscopy (UV-vis). A possible formation mechanism of fishbone-like PbMoO 4 was discussed. This separation-assembly coupling technique (SACT) is a novel way to combine separation of heavy metal ions in wastewater, preparation of self-assembly functional nanomaterials and degradation of organic contaminations, based on an SLM system.