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<p>A&#xa0;Zn-SeO<sub>2</sub> nanocomposite solution was prepared using the two-step technique of pulsed laser ablation in liquid (PLAL): the first step was by ablation of a&#xa0;zinc disc, and the second step was by exposure of a&#xa0;selenium disc within the same ZnO solution to a&#xa0;laser. The properties of the resulting plasma were analyzed using optical emission spectroscopy (OES) and laser-induced breakdown spectroscopy (LIBS) to determine the electron temperature and electron density. The crystal structure was characterized using X‑ray diffraction (XRD), the surface structure was characterized using a&#xa0;field-effect scanning electron microscope (FE-SEM), and optical absorption measurements were used to determine the energy gap. Antibacterial activity tests against Staphylococcus aureus ATCC&#xa0;25923 using the resulting particles at concentrations of 25, 50, and 100 ppm showed no obvious inhibition zones. The results indicate distinct optical and structural behavior with no antibacterial activity under the tested conditions.</p>

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Preparation of Zn–SeO2 nanoparticles using pulsed laser ablation technique in liquid medium: Study of plasma and optical properties

  • 期刊论文

  • 发表日期：

    2026年1月14日

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  • Ibtihaj Hussein Ali,
  • Mohammed H. Jawad,
  • Zahraa T. Turki,
  • Rajaa Obayes Abdulsada

摘要

A Zn-SeO2 nanocomposite solution was prepared using the two-step technique of pulsed laser ablation in liquid (PLAL): the first step was by ablation of a zinc disc, and the second step was by exposure of a selenium disc within the same ZnO solution to a laser. The properties of the resulting plasma were analyzed using optical emission spectroscopy (OES) and laser-induced breakdown spectroscopy (LIBS) to determine the electron temperature and electron density. The crystal structure was characterized using X‑ray diffraction (XRD), the surface structure was characterized using a field-effect scanning electron microscope (FE-SEM), and optical absorption measurements were used to determine the energy gap. Antibacterial activity tests against Staphylococcus aureus ATCC 25923 using the resulting particles at concentrations of 25, 50, and 100 ppm showed no obvious inhibition zones. The results indicate distinct optical and structural behavior with no antibacterial activity under the tested conditions.