| abstract |
The invention belongs to the field of magnetic composite photocatalytic materials, in particular to a ZnFe 2 O 4 /Bi 7 O 9 I 3 magnetic composite photocatalytic material and a preparation method thereof . In the micron-scale flower - like structure formed by the 9I3 nanosheets, a composite structure in which particles are inserted into the microflora is formed ; the size of the ZnFe2O4 nanoparticles is 20-80 nm; the Bi 7O9I3 The thickness of the 7 O 9 I 3 nanosheets is 5-10 nm; the ZnFe 2 O 4 and Bi 7 O 9 I 3 are compounded in a mass ratio of 1:(2-6), and the formed magnetic composite photocatalytic material exhibits superior performance. Paramagnetic, with high saturation magnetization, strong photocatalytic activity and strong magnetic separability, it has good visible light degradation ability to the target pollutant bisphenol A, and the photocatalytic material can be quickly recovered by applying an external magnetic field to achieve multiple recycling. In addition, the preparation method adopted by the magnetic composite photocatalytic material is reliable in principle, simple and easy to control, green and safe, does not require high temperature calcination, has conventional equipment and low cost, and has industrial prospects for large-scale production. |