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<p>This study investigates the use of zinc oxide (ZnO) as a semiconductor photocatalyst, applied to <i>Tamarix articulata</i> stems (TA), for the photocatalytic oxidation of clofibric acid (CA). The microstructural properties of the ZnO-impregnated TA samples were examined using scanning electron microscopy (SEM–EDX). Chemical characterization was performed through Fourier Transform Infrared Spectroscopy (FT-IR). The pH dependence of CA degradation was found to be optimal within the pH range of 7 to 9. The study revealed that the maximum degradation efficiency of CA reached 67% at an initial concentration of 2.5&#xa0;mg/L and 30% at 10&#xa0;mg/L. The catalyst loading was optimized at 1&#xa0;g/L. The degradation kinetics adhered to a pseudo-first-order model, with the rate constant being influenced by the catalyst concentration.</p>

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Enhanced photocatalytic degradation of clofibric acid using ZnO-impregnated Tamarix articulata stems

  • 期刊论文

  • 发表日期：

    2025年1月2日

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  • Hadj Daoud Bouras,
  • Abdallah Aissa,
  • Intisar Belhadj Aissa,
  • Yasmina Khane,
  • Lidia Favier,
  • Nadir Dizge

摘要

This study investigates the use of zinc oxide (ZnO) as a semiconductor photocatalyst, applied to Tamarix articulata stems (TA), for the photocatalytic oxidation of clofibric acid (CA). The microstructural properties of the ZnO-impregnated TA samples were examined using scanning electron microscopy (SEM–EDX). Chemical characterization was performed through Fourier Transform Infrared Spectroscopy (FT-IR). The pH dependence of CA degradation was found to be optimal within the pH range of 7 to 9. The study revealed that the maximum degradation efficiency of CA reached 67% at an initial concentration of 2.5 mg/L and 30% at 10 mg/L. The catalyst loading was optimized at 1 g/L. The degradation kinetics adhered to a pseudo-first-order model, with the rate constant being influenced by the catalyst concentration.