Performance and mechanism of tetracycline removal by peroxymonosulfate-assisted double Z-scheme LaFeO3/g-C3N4/ZnO heterojunction under visible light drive

The photocatalytic persulfate activation technology has attracted attention due to the synergistic effect that can be generated by the coupling of photocatalysis and persulfate. In this study, a ternary heterostructure LaFeO 3 /g-C 3 N 4 /ZnO was successfully formed, and a coupled photocatalytic/PMS system was constructed. The coupled system exhibited synergistic effect and achieved high tetracycline removal efficiency and quick kinetic, as 85.89 % tetracycline was degraded within 40 min. Additionally, the coupled system has a wider pH adaptation range and can better resist the influence of coexisting ions (Cl − , CO 3 2 − ) and humic acid. Mechanism investigation indicated that the double-Z scheme…

• CA
  Chinese Academy of Fishery Sciences

  Awards: 2025CG04, 2023TD67
• NK
  National Key Research and Development Program of China

  Awards: CARS-46, 2023YFD2400502
• CP
  Central Public-interest Scientific Institution Basal Research Fund, Chinese Academy of Fishery Sciences