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<p>Transition metals have a broad application prospect in sulfate radical-advanced oxidation process (SR-AOP) due to their advantages of high activation efficiency and no external energy input. However, transition metals present several challenges, including a cumbersome preparation process, low effective utilization of metal sites and leakage of metal ions. These limitations hinder the practical application of transition metals in sulfate radical-advanced oxidation process. In this study, ZIF67-Co<sub>3</sub>O<sub>4</sub> catalyst was prepared using zeolite imidazolium framework derivatives as precursor. The performance of ZIF67-Co<sub>3</sub>O<sub>4</sub> activated persulfate for the degradation of tetracycline (TC) and various factors affecting the degradation performance were investigated. The degradation reaction mechanism was also summarized. The experimental results showed that: The TC removal rate of ZIF67-Co<sub>3</sub>O<sub>4</sub> + PMS system was 75.07% at 90&#xa0;min, which possessed high removal efficiency. The ZIF67-Co<sub>3</sub>O<sub>4</sub> catalyst exhibited high stability, it had a high catalytic activity after five recycling cycles. The active radicals generated by ZIF67-Co<sub>3</sub>O<sub>4</sub> activated PMS degradation of TC pollutants were ·OH, SO<sub>4</sub><sup>−</sup>·, <sup>1</sup>O<sub>2</sub>, and ·O<sub>2</sub><sup>−</sup>.</p> Graphical Abstract <p></p>

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Degradation of Tetracyclines in Water by Activating Peroxymonosulfate with Zeolitic Imidazolate Framework 67 Derivatives

  • 期刊论文

  • 发表日期：

    2025年1月21日

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  • Yuan Li,
  • Chao Li,
  • Kaiqi Zhang,
  • Jiashun Cao

摘要

Transition metals have a broad application prospect in sulfate radical-advanced oxidation process (SR-AOP) due to their advantages of high activation efficiency and no external energy input. However, transition metals present several challenges, including a cumbersome preparation process, low effective utilization of metal sites and leakage of metal ions. These limitations hinder the practical application of transition metals in sulfate radical-advanced oxidation process. In this study, ZIF67-Co3O4 catalyst was prepared using zeolite imidazolium framework derivatives as precursor. The performance of ZIF67-Co3O4 activated persulfate for the degradation of tetracycline (TC) and various factors affecting the degradation performance were investigated. The degradation reaction mechanism was also summarized. The experimental results showed that: The TC removal rate of ZIF67-Co3O4 + PMS system was 75.07% at 90 min, which possessed high removal efficiency. The ZIF67-Co3O4 catalyst exhibited high stability, it had a high catalytic activity after five recycling cycles. The active radicals generated by ZIF67-Co3O4 activated PMS degradation of TC pollutants were ·OH, SO4−·, 1O2, and ·O2−.

Graphical Abstract