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<p>Copper ferrite is one of the most important magnetic ferrites due to its special properties such as magnetic, electrical, thermal, and catalytic properties. In this research, the CuFeO<sub>2</sub> nanocomposite was synthesized and approved by XRD, FESEM, FTIR, and EDS analyses. The removal efficiency was tested using peroxydisulfate (PDS) activation to degrade metronidazole (MNZ) via free radical generation. The influence of crucial parameters on MNZ removal in the UV/PDS/CuFeO<sub>2</sub> system was investigated. Under optimal conditions (pH 3, 3 mM PDS, 1.3&#xa0;g/L CuFeO<sub>2</sub>, 75&#xa0;min), the process achieved more than 94.2% degradation of MNZ.</p><p>The sulfate radical (SO<sub>4</sub><sup>•−</sup>) played a primary role in degrading MNZ. CuFeO<sub>2</sub> demonstrated excellent reusability across four consecutive cycles, with no notable decrease in its catalytic performance. In addition, metal leaching tests demonstrated that CuFeO₂ exhibits minimal Cu and Fe release under the optimized reaction conditions, confirming its good stability and suitability as a heterogeneous catalyst for MNZ degradation.This approach offers a promising alternative advanced oxidation technique for effectively removing emerging contaminants from water.</p>

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Photocatalytic Degradation of Metronidazole Using CuFeO2-Activated Peroxydisulfate: Factors, Performance, and Mechanisms

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • Seyedeh Nastaran Asadzadeh,
  • Peyman Feyzi,
  • Kamran Tari,
  • Mostafa Gholamrezaei,
  • Nima Firouzeh

摘要

Copper ferrite is one of the most important magnetic ferrites due to its special properties such as magnetic, electrical, thermal, and catalytic properties. In this research, the CuFeO2 nanocomposite was synthesized and approved by XRD, FESEM, FTIR, and EDS analyses. The removal efficiency was tested using peroxydisulfate (PDS) activation to degrade metronidazole (MNZ) via free radical generation. The influence of crucial parameters on MNZ removal in the UV/PDS/CuFeO2 system was investigated. Under optimal conditions (pH 3, 3 mM PDS, 1.3 g/L CuFeO2, 75 min), the process achieved more than 94.2% degradation of MNZ.

The sulfate radical (SO4•−) played a primary role in degrading MNZ. CuFeO2 demonstrated excellent reusability across four consecutive cycles, with no notable decrease in its catalytic performance. In addition, metal leaching tests demonstrated that CuFeO₂ exhibits minimal Cu and Fe release under the optimized reaction conditions, confirming its good stability and suitability as a heterogeneous catalyst for MNZ degradation.This approach offers a promising alternative advanced oxidation technique for effectively removing emerging contaminants from water.