Preparation of magnetic α-Fe2O3/ZnFe2O4@Ti3C2 MXene with excellent photocatalytic performance

The high conductivity Ti3C2 MXene with the unique lamellar nanostructure can effectively improve photoelectrocatalytic ability of composite as cocatalyst. In this paper, the magnetic α-Fe2O3/ZnFe2O4 heterojunctions were obtained using one-step hydrothermal synthesis. And α-Fe2O3/ZnFe2O4@Ti3C2 MXene photocatalyst can be easily obtained by ultrasonic assisted self-assembly approach for dispersing magnetic α-Fe2O3/ZnFe2O4 heterojunctions on Ti3C2 MXene surface. Due to the improving photoelectron ability, the α-Fe2O3/ZnFe2O4@Ti3C2 MXene was found to exhibit the higher photocatalytic ability than the α-Fe2O3/ZnFe2O4 heterojunctions in eliminating Rhodamine B (RhB) pollutant and toxic Cr(Ⅵ) in water. Even more important, as a magnetic composite, the 10 wt% α-Fe2O3/ZnFe2O4@Ti3C2 MXene photocatalyst exhibited the excellent reusability. The terrific photocatalytic ability is due to the numerous heterostructure interfaces, the increase of visible light harvesting and high conductivity.