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Abstract <p>In this work, Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticles (MNPs) were synthesized via a green ultrasonic-assisted method using aqueous-ethanoic caper (<i>Capparis spinosa</i>) leaves. The polyphenolic compounds in the extract act as both reducing and stabilizing agents. The synthesized Fe<sub>3</sub>O<sub>4</sub> MNPs were described using FT-IR, FE-SEM, TEM, XRD, and VSM techniques. XRD analysis confirmed the formation of a highly crystalline spinal structure, cubic, while TEM and SEM images revealed cubic-shaped particles with an average size of 28 nm. Magnetic measurements via VSM exhibited exemplary superparamagnetic behavior with a saturation magnetization of 5.5 emu/g. Furthermore, the antibacterial potential of the MNPs was evaluated for <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>. The results demonstrated significant dose-dependent antibacterial activity, with the highest inhibition zones observed at the maximum concentration. These findings suggest that the green-synthesized Fe<sub>3</sub>O<sub>4</sub> MNPs are promising candidates for biomedical applications.</p>

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Synthesis of Fe3O4 Nanoparticles via Ultrasonic Technique and Evaluation of Their Antibacterial Efficiency

  • 期刊论文

  • 发表日期：

    2026年7月9日

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  • Athra G. Sager,
  • Jawad Kadhim Abaies,
  • Diana Khaled Karim,
  • Zeena R. Katoof

摘要

Abstract

In this work, Fe3O4 magnetic nanoparticles (MNPs) were synthesized via a green ultrasonic-assisted method using aqueous-ethanoic caper (Capparis spinosa) leaves. The polyphenolic compounds in the extract act as both reducing and stabilizing agents. The synthesized Fe3O4 MNPs were described using FT-IR, FE-SEM, TEM, XRD, and VSM techniques. XRD analysis confirmed the formation of a highly crystalline spinal structure, cubic, while TEM and SEM images revealed cubic-shaped particles with an average size of 28 nm. Magnetic measurements via VSM exhibited exemplary superparamagnetic behavior with a saturation magnetization of 5.5 emu/g. Furthermore, the antibacterial potential of the MNPs was evaluated for Escherichia coli and Staphylococcus aureus. The results demonstrated significant dose-dependent antibacterial activity, with the highest inhibition zones observed at the maximum concentration. These findings suggest that the green-synthesized Fe3O4 MNPs are promising candidates for biomedical applications.