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<p>In this research, the plasma jet method was used using a 13 kV voltage source, which is an economical and environmentally friendly method for producing nanoparticles of copper and zinc alloy manufactured with a composition ratio of 80 to 20. The particles were produced at different times of 5, 10, and 15 min. Although the preparation times were close, the results showed significant differences. The resulting particles were evaluated using different characterization techniques, including XRD, which showed that the resulting materials were polycrystalline, with the appearance of ZnO and copper at different diffraction peaks. The average crystal sizes were 13.07, 11.29, and 10.07 nm for preparation times of 5, 10, and 15 min, respectively. FE-SEM results show that the nanoparticles are significantly affected by the preparation time, as they suffered from clear agglomerations at 5 min, becoming more regular and smaller at 15 min. Atomic force microscopy was used to determine the average diameter of the resulting particles, which was equal to 99.30 nm, 96.61 nm, and 91.24 nm for the preparation times, respectively. On the other hand, the zeta potential test results show a clear improvement in the stability of the produced particles in liquid with increasing preparation time, with the zeta potential reaching 52.9 mV at a preparation time of 15 min. Biological tests of the manufactured materials against <i>Staphylococcus aureus</i> and <i>Escherichia coli</i> demonstrated significant anti-growth efficacy, indicating that plasma jetting is a promising method for producing effective metal nanoparticles for biomedical applications.</p>

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Plasma Jet Synthesis of Cu–Zn Alloy Nanoparticles: Characterization and Antibacterial Evaluation

  • 期刊论文

  • 发表日期：

    2025年11月20日

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  • Mohammed H. Jawad,
  • Kadhim A. Aadim

摘要

In this research, the plasma jet method was used using a 13 kV voltage source, which is an economical and environmentally friendly method for producing nanoparticles of copper and zinc alloy manufactured with a composition ratio of 80 to 20. The particles were produced at different times of 5, 10, and 15 min. Although the preparation times were close, the results showed significant differences. The resulting particles were evaluated using different characterization techniques, including XRD, which showed that the resulting materials were polycrystalline, with the appearance of ZnO and copper at different diffraction peaks. The average crystal sizes were 13.07, 11.29, and 10.07 nm for preparation times of 5, 10, and 15 min, respectively. FE-SEM results show that the nanoparticles are significantly affected by the preparation time, as they suffered from clear agglomerations at 5 min, becoming more regular and smaller at 15 min. Atomic force microscopy was used to determine the average diameter of the resulting particles, which was equal to 99.30 nm, 96.61 nm, and 91.24 nm for the preparation times, respectively. On the other hand, the zeta potential test results show a clear improvement in the stability of the produced particles in liquid with increasing preparation time, with the zeta potential reaching 52.9 mV at a preparation time of 15 min. Biological tests of the manufactured materials against Staphylococcus aureus and Escherichia coli demonstrated significant anti-growth efficacy, indicating that plasma jetting is a promising method for producing effective metal nanoparticles for biomedical applications.