| abstract |
The invention relates to the technical field of photocatalytic materials, and discloses a ZnFe 2 O 4 ‑TiO 2 ‑rGO heterojunction photocatalytic degradation material, comprising the following formulation raw materials and components: nano-ZnFe 2 O 4 hollow microspheres, aminated Reduced graphene oxide, n-butyl titanate, Er(CH 3 COO) 3 . In the ZnFe 2 O 4 ‑TiO 2 ‑rGO heterojunction photocatalytic degradation material, the nano-ZnFe 2 O 4 hollow microspheres have a larger specific surface area, and the ethylenediamine-grafted aminated reduced graphene oxide is uniformly supported, More photochemically active sites can be exposed, Er-doped nano-TiO 2 reduces the forbidden band width of nano-TiO 2 and enhances the utilization rate of light energy by photocatalytic materials, ZnFe 2 O 4 and TiO 2 are in the reduction and oxidation process. The surface of graphene forms a heterojunction, which inhibits the recombination of photogenerated electrons and holes of TiO2 and ZnFe2O4 . The photogenerated electrons and holes react with oxygen and water to generate hydroxyl radicals and superoxide radicals, respectively, which are combined with methylene blue. It undergoes redox reaction with organic pollutants such as methyl orange, and is degraded into non-toxic or low-toxic small molecules. |