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<p>Electrochemical advanced oxidation processes are highly effective for removing harmful organic pollutants (HOPs). However, their efficiency relies on the availability of stable and active catalysts. In this study, we fabricated a self-supporting electrode featuring a cobalt nanosheet array via a one-step electrodeposition method, enabling electrodriven degradation of diverse HOPs across multiple scenarios. Using tetracycline (TC) degradation as a model reaction, the Co@CF catalyst efficiently electroactivated peroxymonosulfate (PMS) to generate reactive oxygen species, including ·OH, <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\text{SO}_{4}^{\cdot -}\)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <msubsup> <mtext>SO</mtext> <mrow> <mn>4</mn> </mrow> <mrow> <mo>⋅</mo> <mo>−</mo> </mrow> </msubsup> </math></EquationSource> </InlineEquation>, and <sup>1</sup>O<sub>2</sub>, leading to complete TC removal within 5 min in pure water. The Co@CF catalyst retained its catalytic activity even after 14 reuse cycles, demonstrating remarkable stability. Furthermore, we elucidated the mechanism of PMS activation in the Co@CF/PMS system under an electric field through <i>in situ</i> electrochemical attenuated total reflection-Fourier transform infrared online monitoring and density functional theory calculations. This work offers innovative insights into the design of highly efficient, stable, self-supporting catalysts and presents a promising technical strategy for the effective elimination of persistent organic pollutants in practical water treatment applications.</p>

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Cobalt array modified self-supporting electrode achieves multi-scenario destruction of harmful organic pollutants

  • 期刊论文

  • 发表日期：

    2026年4月16日

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  • Haijian Wang,
  • Qiao Ye,
  • Xingye Zhao,
  • Jie Chen,
  • Yicheng Zhang,
  • Guangzhi Hu,
  • Yingtang Zhou,
  • Xue Zhao

摘要

Electrochemical advanced oxidation processes are highly effective for removing harmful organic pollutants (HOPs). However, their efficiency relies on the availability of stable and active catalysts. In this study, we fabricated a self-supporting electrode featuring a cobalt nanosheet array via a one-step electrodeposition method, enabling electrodriven degradation of diverse HOPs across multiple scenarios. Using tetracycline (TC) degradation as a model reaction, the Co@CF catalyst efficiently electroactivated peroxymonosulfate (PMS) to generate reactive oxygen species, including ·OH, \(\text{SO}_{4}^{\cdot -}\) SO 4 ⋅ − , and 1O2, leading to complete TC removal within 5 min in pure water. The Co@CF catalyst retained its catalytic activity even after 14 reuse cycles, demonstrating remarkable stability. Furthermore, we elucidated the mechanism of PMS activation in the Co@CF/PMS system under an electric field through in situ electrochemical attenuated total reflection-Fourier transform infrared online monitoring and density functional theory calculations. This work offers innovative insights into the design of highly efficient, stable, self-supporting catalysts and presents a promising technical strategy for the effective elimination of persistent organic pollutants in practical water treatment applications.