Single-and Double-Shelled CoFe2O4 Nanoparticles as Highly Efficient Magnetic Separable Photocatalysts

摘要

In this paper,we have reported a facile strategy to fabricate a core/shell/shell structured CuO@ZnO@CoFe2O4 nanocomposite with enhanced UV-light-driven photocatalytic activity that is capable of fast magnetic separation.Photocatalytic examination of the as-prepared photocatalyst was carried out using methylene blue(MB)solution under UV irradiation.A hypothesized reaction mechanism was presented,showing the introduction of CuO into ZnO@CoFe2O4 nanocomposite facilitates charge separation by trapping photo-generated electrons,therefore improves the photocatalytic properties.The resultant multifunctional nanocomposite was thoroughly characterized by a series of techniques including XRD,EDX,FTIR,SEM,TEM and VSM.