Magnetic photocatalyst Bi3O4Cl/MnxZn1-xFe2O4: Facile synthesis and its photocatalytic activity

Abstract

Herein, a Bi3O4Cl/MnxZn1-xFe2O4 composite photocatalyst based on MnxZn1-xFe2O4 is fabricated by hydrothermal and roasting methods. The performances of the obtained photocatalysts were detected via XRD, SEM, EDS, TEM, UV–vis, PL and nitrogen absorption-desorption equipment, which indicated the successful combination of nanosheet Bi3O4Cl and granular MnxZn1-xFe2O4. The activity of the photocatalyst was investigated under solar light with rhodamine B (RhB) as a simulated pollutant, which achieved high catalytic and magnetic properties. In addition, 99.5 % degradation of RhB was displayed by MB-10(10 %MnxZn1-xFe2O4/Bi3O4Cl). The Bi3O4Cl/MnxZn1-xFe2O4 photocatalyst was regarded as having excellent kinetic properties for recycling and magnetism due to its low hysteresis loss illustrated in the hysteresis loop images. In addition, the average recovery of the samples was 91.3 %, which successfully verified the excellent stability of the composites in RhB degradation. This paper demonstrates that the doping of magnetic material onto Bi3O4Cl is a feasible approach to remove RhB. The recovery of the photocatalyst, which provides low cost and highly efficient photocatalysis, is guiding a brand-new strategy for the elimination of organic contaminants.

Keywords

• Bi3O4Cl/MnxZn1-xFe2O4
• Hydrothermal-roasting method
• Photocatalytic activity
• Magnetic recovery