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<p>Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) have been proven to be an effective method for the removal of tetracycline in water. In this study, the Co<sub>3</sub>O<sub>4</sub>/molecular sieve catalyst synthesized by the incipient wetness impregnation method was used for PMS activation. The effect of specific surface area on the catalytic performance of Co<sub>3</sub>O<sub>4</sub>/molecular sieve catalyst was investigated and analyzed in detail by characterization techniques. In the Tetracycline hydrochloride (TCH) degradation experiment, the Co<sub>3</sub>O<sub>4</sub>/13X catalyst exhibited the highest specific surface area (490.584 m<sup>2</sup>/g) and provide abundant active sites, enabling 98.0% TCH degradation within 30&#xa0;min under optimal conditions (1.5&#xa0;g catalyst, 0.3 mM PMS, pH 8.0, 25℃), with a reaction rate constant (k<sub>obs</sub>) of 0.0977&#xa0;min<sup>-1</sup>. In addition, the degradation mechanism of TCH was explored using electron paramagnetic resonance (EPR) spectroscopy and quenching experiments. It was confirmed that free radicals (SO<sub>4</sub><sup>•−</sup>, •OH, O<sub>2</sub><sup>•−</sup>) and non-free radical species (<sup>1</sup>O<sub>2</sub>) generated during the reaction play a crucial role in the degradation process of TCH. In summary, the Co<sub>3</sub>O<sub>4</sub>/13X catalyst, when activating PMS, exhibits a remarkable synergistic effect on the degradation of TCH, and shows good repeatability and environmental adaptability. This study provides valuable insights into the design and optimization of catalysts for degrading antibiotic pollutants in water treatment processes.</p> Graphical Abstract <p></p>

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Co3O4/Molecular Sieve Catalyst Activated Peroxymonosulfate Degradation of Tetracycline Hydrochloride

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Rui Hu,
  • Haiyin Wang,
  • Jiahui Luo,
  • Jianjun Song,
  • Haiyuan Jia

摘要

Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) have been proven to be an effective method for the removal of tetracycline in water. In this study, the Co3O4/molecular sieve catalyst synthesized by the incipient wetness impregnation method was used for PMS activation. The effect of specific surface area on the catalytic performance of Co3O4/molecular sieve catalyst was investigated and analyzed in detail by characterization techniques. In the Tetracycline hydrochloride (TCH) degradation experiment, the Co3O4/13X catalyst exhibited the highest specific surface area (490.584 m2/g) and provide abundant active sites, enabling 98.0% TCH degradation within 30 min under optimal conditions (1.5 g catalyst, 0.3 mM PMS, pH 8.0, 25℃), with a reaction rate constant (kobs) of 0.0977 min-1. In addition, the degradation mechanism of TCH was explored using electron paramagnetic resonance (EPR) spectroscopy and quenching experiments. It was confirmed that free radicals (SO4•−, •OH, O2•−) and non-free radical species (1O2) generated during the reaction play a crucial role in the degradation process of TCH. In summary, the Co3O4/13X catalyst, when activating PMS, exhibits a remarkable synergistic effect on the degradation of TCH, and shows good repeatability and environmental adaptability. This study provides valuable insights into the design and optimization of catalysts for degrading antibiotic pollutants in water treatment processes.

Graphical Abstract