| abstract |
The invention discloses a micro-nano Fe 3 O 4 @BiOCl composite material and a synthesis method thereof. The Fe 3 O 4 @BiOCl composite material is synthesized by a simple hydrolysis precipitation method. Monodisperse Fe 3 O 4 nanomaterials were first prepared by hydrothermal method, then mixed with Bi 3+ solution at room temperature, and Fe 3 O 4 @BiOCl composites were synthesized by hydrolysis-precipitation method under weakly acidic conditions. The morphology consists of flake BiOCl and granular Fe 3 O 4 , small particles of Fe 3 O 4 are attached to the surface of BiOCl nanosheets, Fe 3 O 4 particle size is 20‑40 nm, and BiOCl main crystal plane is (001) , the length and width of the crystal particles are 0.5-1 μm, and the thickness is 10-20 nm. The material has large specific surface area, good magnetic and dispersibility, and catalytic response to visible light. The method improves the recovery rate of samples and the cycle stability of photocatalytic degradation of organic pollutants, and provides an effective way to solve the problem of the recovery of powder photocatalysts in the degradation of organic pollutants. |