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<p>Due to its high solubility and persistent molecular structure, residual Amoxicillin (AMX) in aquatic environments is particularly difficult to eliminate. Consequently, the development of photocatalysts that combine high efficiency, environmental compatibility, and practical applicability remains a significant challenge. In this report, a green-synthesized MgO/ZnO nanocomposites were successfully prepared using <i>Moringa oleifera</i> extract as a natural capping agent and characterized by various analytical techniques. XRD, FTIR, UV-vis diffuse reflectance spectroscopy, and SEM-EDX were employed to determine the material’s structural, spectroscopic, optical, and compositional properties. XRD analysis confirmed the presence of characteristic diffraction peaks corresponding to cubic MgO and hexagonal ZnO phases, indicating successful formation of the composite material. Optical characterization revealed a bandgap energy of 2.5&#xa0;eV for MgZ-1:3 NC a value conducive to enhanced photocatalytic activity under solar radiation. EDX spectroscopy indicated the elemental composition MgZ-1:3, with atomic percentages distributed as follows: Mg &gt; O &gt; Zn. The photocatalytic performance of the MgZ-1:3 nanoparticles toward AMX degradation was evaluated under varying experimental conditions. Specifically, the influences of photocatalyst dose (0.025–1.4&#xa0;g L<sup>− 1</sup>), initial AMX concentration (10–100 mg L<sup>− 1</sup>), and aqueous solution pH (3–11) on degradation efficiency were investigated and analyzed. Experimental findings indicate that MgZ-1:3 nanoparticles exhibit superior photocatalytic activity compared with conventional photocatalysts.</p>

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Efficient Photocatalytic Degradation of Amoxicillin in Aqueous Solutions Using Green-Synthesized MgO/ZnO-Based Nanocomposites under Simulated Solar Light Irradiation

  • 期刊论文

  • 发表日期：

    2026年7月27日

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  • Abdelaziz Arroussi,
  • Hamza Laksaci,
  • Ghania Radji,
  • Abderrahmane Hiri,
  • Omar Khelifi,
  • Nourredine Bettahar,
  • Mahmut Özacar

摘要

Due to its high solubility and persistent molecular structure, residual Amoxicillin (AMX) in aquatic environments is particularly difficult to eliminate. Consequently, the development of photocatalysts that combine high efficiency, environmental compatibility, and practical applicability remains a significant challenge. In this report, a green-synthesized MgO/ZnO nanocomposites were successfully prepared using Moringa oleifera extract as a natural capping agent and characterized by various analytical techniques. XRD, FTIR, UV-vis diffuse reflectance spectroscopy, and SEM-EDX were employed to determine the material’s structural, spectroscopic, optical, and compositional properties. XRD analysis confirmed the presence of characteristic diffraction peaks corresponding to cubic MgO and hexagonal ZnO phases, indicating successful formation of the composite material. Optical characterization revealed a bandgap energy of 2.5 eV for MgZ-1:3 NC a value conducive to enhanced photocatalytic activity under solar radiation. EDX spectroscopy indicated the elemental composition MgZ-1:3, with atomic percentages distributed as follows: Mg > O > Zn. The photocatalytic performance of the MgZ-1:3 nanoparticles toward AMX degradation was evaluated under varying experimental conditions. Specifically, the influences of photocatalyst dose (0.025–1.4 g L− 1), initial AMX concentration (10–100 mg L− 1), and aqueous solution pH (3–11) on degradation efficiency were investigated and analyzed. Experimental findings indicate that MgZ-1:3 nanoparticles exhibit superior photocatalytic activity compared with conventional photocatalysts.