| abstract |
The invention discloses a doped photocatalyst for treating landfill leachate and its preparation method and application. The photocatalyst is represented by the general formula A-B-LaFeO 3 -Y, A is Mn, Mo, Co or Cr, B is N, B, F or S, LaFeO 3 is the active component, Y is the porous carrier, the mass ratio of A, B and LaFeO 3 is 1-4:2-8:100, and the mass ratio of LaFeO 3 and Y is 30 ‑40:100. The catalyst of the present invention is co-doped and modified by specific metal components and non-metal components, effectively regulating the electronic structure of the catalyst, inhibiting the recombination of photogenerated electron-hole pairs, and improving the photocatalytic efficiency; using the catalyst for ultrasonic coupling photocatalytic oxidation, The photocatalytic efficiency can be improved, the problem of low treatment efficiency and long cycle of the current photocatalytic oxidation technology can be solved, and the degradation efficiency of pollutants can be significantly improved. |