| abstract |
The invention discloses a preparation method of a ZnO-TiO 2 magnetic graphene oxide/chitosan composite material, comprising the following steps: firstly dissolving ammonium ferric sulfate dodecahydrate and ammonium ferrous sulfate hexahydrate in ultrapure water , adding ammonia water and chitosan/graphene oxide suspension, and then mixing and calcining ZnO gel and TiO 2 gel to obtain ZnO-TiO 2 powder. The obtained magnetic chitosan/graphene oxide powder and ZnO-TiO 2 powder are dissolved in ethanol, stirred and mixed, subjected to hydrothermal reaction, and dried to obtain a loaded ZnO-TiO 2 magnetic graphene oxide/chitosan composite material. The composite material prepared by the method of the invention can be used for sewage treatment, has excellent adsorption performance, can effectively remove heavy metals and organic pollutants in sewage, and has a good market prospect. |