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<p>The development of multifunctional nanocomposites integrating environmental remediation, antimicrobial activity, and energy storage is crucial for sustainable technologies. In this work, chitosan–pyridyl hybrid nanocomposites embedded with ZnO and CuO nanoparticles (Chs–Py/ZnO–CuO) were successfully synthesized via Schiff base functionalization followed by in situ formation of metal oxide nanoparticles. Structural and morphological characterization using FTIR, XRD, FESEM, EDX, TEM, and BET surface area analysis confirmed the successful formation of the hybrid framework and uniform dispersion of ZnO and CuO within the polymer matrix. The synthesized nanocomposite exhibited efficient photocatalytic performance toward the degradation of methylene blue and methyl orange dyes under solar irradiation, achieving degradation efficiencies exceeding 82% within 90&#xa0;min. This enhanced activity is attributed to improved charge separation across the ZnO–CuO heterojunction and increased reactive oxygen species generation. Additionally, the material demonstrated strong broad-spectrum antimicrobial activity against <i>Staphylococcus aureus</i>, <i>Escherichia coli</i>, <i>Candida albicans</i>, and <i>Aspergillus niger</i>, driven by synergistic effects of metal ion release, ROS generation, and membrane disruption. Electrochemical evaluation revealed excellent capacitive performance, delivering a high specific capacitance of 271&#xa0;F g⁻¹ at 1&#xa0;A g⁻¹ with good stability. These results highlight the potential of Chs–Py/ZnO–CuO nanocomposites as versatile materials for wastewater treatment, antimicrobial applications, and energy storage systems.</p>

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Chitosan-Pyridyl Hybrid Nanocomposites with ZnO and CuO Nanoparticles: A Promising Strategy for Photocatalytic, Antimicrobial and Supercapacitor Applications

  • 期刊论文

  • 发表日期：

    2026年4月26日

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  • Asmae Mimouni,
  • Ahmed G. Taha,
  • Ahmed R. Tawfik

摘要

The development of multifunctional nanocomposites integrating environmental remediation, antimicrobial activity, and energy storage is crucial for sustainable technologies. In this work, chitosan–pyridyl hybrid nanocomposites embedded with ZnO and CuO nanoparticles (Chs–Py/ZnO–CuO) were successfully synthesized via Schiff base functionalization followed by in situ formation of metal oxide nanoparticles. Structural and morphological characterization using FTIR, XRD, FESEM, EDX, TEM, and BET surface area analysis confirmed the successful formation of the hybrid framework and uniform dispersion of ZnO and CuO within the polymer matrix. The synthesized nanocomposite exhibited efficient photocatalytic performance toward the degradation of methylene blue and methyl orange dyes under solar irradiation, achieving degradation efficiencies exceeding 82% within 90 min. This enhanced activity is attributed to improved charge separation across the ZnO–CuO heterojunction and increased reactive oxygen species generation. Additionally, the material demonstrated strong broad-spectrum antimicrobial activity against Staphylococcus aureus, Escherichia coli, Candida albicans, and Aspergillus niger, driven by synergistic effects of metal ion release, ROS generation, and membrane disruption. Electrochemical evaluation revealed excellent capacitive performance, delivering a high specific capacitance of 271 F g⁻¹ at 1 A g⁻¹ with good stability. These results highlight the potential of Chs–Py/ZnO–CuO nanocomposites as versatile materials for wastewater treatment, antimicrobial applications, and energy storage systems.