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<p>Activated carbon (AC)-CuO composite were prepared with an in-situ method and evaluated as highly efficient catalyst in sulfate radical-based advanced oxidation processes. The AC-CuO composite had a specific surface area of 269.52 m<sup>2</sup>&#xa0;g<sup>−1</sup>, being considerably larger than that of CuO composite (53.23 m<sup>2</sup>&#xa0;g<sup>−1</sup>). The material exhibited excellent catalytic activity, being influenced by AC content and reaction parameters. Under optimal conditions, the AC-CuO composite yielded fast degradation of vanillic acid with an apparent rate constant of 0.13&#xa0;min<sup>−1</sup>, which was 3.36 folds of that achieved by using CuO composite. Additionally, the catalyst could also be employed to degrade the dissolved organic matter in the effluent discharged from pulp and paper mills. And the reactive oxygen species in the catalytic system were <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\({\text{SO}}_{4}^{\bullet -}\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mtext>SO</mtext> <mrow> <mn>4</mn> </mrow> <mrow> <mo>∙</mo> <mo>-</mo> </mrow> </msubsup> </math></EquationSource> </InlineEquation>, •OH and <sup>1</sup>O<sub>2</sub>.The significantly enhanced catalytic properties of the AC-CuO composite in comparison with that of CuO composite was attributed to its larger surface area, abundant surface functional groups on the surface of AC and efficient generation of reactive species during the catalytic process.</p>

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AC-CuO composite prepared with in-situ method to activate persulfate for highly effective degradation of lignin pollutants

  • 期刊论文

  • 发表日期：

    2026年2月6日

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  • Junjian An,
  • Jiantao Yang,
  • Jincheng Lu,
  • Yufeng Jiang,
  • Shanshan Wang,
  • Peng Wang

摘要

Activated carbon (AC)-CuO composite were prepared with an in-situ method and evaluated as highly efficient catalyst in sulfate radical-based advanced oxidation processes. The AC-CuO composite had a specific surface area of 269.52 m2 g−1, being considerably larger than that of CuO composite (53.23 m2 g−1). The material exhibited excellent catalytic activity, being influenced by AC content and reaction parameters. Under optimal conditions, the AC-CuO composite yielded fast degradation of vanillic acid with an apparent rate constant of 0.13 min−1, which was 3.36 folds of that achieved by using CuO composite. Additionally, the catalyst could also be employed to degrade the dissolved organic matter in the effluent discharged from pulp and paper mills. And the reactive oxygen species in the catalytic system were \({\text{SO}}_{4}^{\bullet -}\) SO 4 ∙ - , •OH and 1O2.The significantly enhanced catalytic properties of the AC-CuO composite in comparison with that of CuO composite was attributed to its larger surface area, abundant surface functional groups on the surface of AC and efficient generation of reactive species during the catalytic process.