| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 641117 | Separation and Purification Technology | 2014 | 7 Pages |
•Fe3O4@LDH@Ag/Ag3PO4 submicrosphere is a novel visible-light photocatalyst.•The photocatalyst could be easily separated from wastewater for reuse.•Ag surrounded on Ag3PO4 enhances stability and reusability of Ag3PO4.•Zn–Cr LDH has high adsorption capacity and facilitates electron–hole separation.•The photocatalyst shows a high photocatalytic efficiency.
A novel visible-light responsed photocatalyst Fe3O4@LDH@Ag/Ag3PO4 submicrosphere has been successfully prepared by using PO43− intercalated layered double hydroxides (LDH) layers as the intermedium for the formation of Ag3PO4 on the surface of Fe3O4@LDH microspheres. X-ray diffraction (XRD), X-rays photoelectron spectroscopy (XPS), inductively coupled plasma atomic emission spectrum (ICP-AES), high-resolution transmission electron microscopy (HRTEM), field emission and scanning electronic microscope (FESEM) were used to characterize the products. It was found that LDH and Ag/Ag3PO4 layers were successively coated on the Fe3O4 surface. PO43− intercalated LDH played an important role in the formation of Ag/Ag3PO4 nanoparticle on the surface of Fe3O4@LDH microspheres. The studies of photocatalytic degradation on Methylene blue (MB) indicate that the Fe3O4@LDH@Ag/Ag3PO4 photocatalyst showed efficient visible-light-driven photocatalytic activities for degradation of organic pollutants. Furthermore, the photocatalyst could be easily separated from wastewater for reuse by simply applying an external magnetic field. This work provides a facile approach to fabricate novel type of visible-light-responsed photocatalyst for environment treatment.
Graphical abstractA novel visible-light responsed photocatalyst Fe3O4@LDH@Ag/Ag3PO4 submicrospheres were successfully prepared by formation of Ag/Ag3PO4 on the surface of Fe3O4@LDH microspheres.Figure optionsDownload full-size imageDownload as PowerPoint slide
