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Abstract <p>Zinc ferrite NPs using <i>Justicia Adahatoda</i> were synthesized by the sol–gel method. The obtained ZnFe<sub>2</sub>O<sub>4</sub> magnetic nanoparticles were evaluated, including powder x-ray diffraction technique (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy, UV–visible spectroscopy (UV–Vis), vibrating sample magnetometer (VSM), and antibacterial activity. The XRD analysis confirms that the ZnFe<sub>2</sub>O<sub>4</sub> nanoparticle belongs to the cubic crystal system with an average Crystallite Size of 16.7&#xa0;nm. FT-IR study confirms a functional group and the presence of a Zinc ferrite band. Agglomerated and irregularly shaped particles were noticed from HRSEM. EDAX gives the elemental analysis of plant extract-mediated zinc ferrite nanoparticles. UV–visible spectrum shows the absorption in the UV region, and the energy gap was evaluated as 2.9&#xa0;eV. The VSM study shows a small hysteresis loop confirming of soft magnetic nature of Zinc ferrite NPs. The agar well diffusion method depicts the antibacterial activity of plant extract mediated zinc ferrite nanoparticles was tested against both gram-positive and gram-negative bacterial strains. The antimicrobial activity of the samples on <i>Bacillus subtilis</i> (13&#xa0;mm),<i> Staphylococcus aureus</i> (15&#xa0;mm), and <i>Escherichia coli</i> (14&#xa0;mm) was noted.</p> Graphical abstract <p></p>

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Facile synthesis of zinc ferrite magnetic nanoparticles for antibacterial application

  • 期刊论文

  • 发表日期：

    2025年5月13日

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  • Savari Muthu Sachin,
  • G. Govindasamy,
  • S. John Sundaram,
  • J. Preethi Rency Fathima,
  • M. Sherlin Nivetha

摘要

Abstract

Zinc ferrite NPs using Justicia Adahatoda were synthesized by the sol–gel method. The obtained ZnFe2O4 magnetic nanoparticles were evaluated, including powder x-ray diffraction technique (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy, UV–visible spectroscopy (UV–Vis), vibrating sample magnetometer (VSM), and antibacterial activity. The XRD analysis confirms that the ZnFe2O4 nanoparticle belongs to the cubic crystal system with an average Crystallite Size of 16.7 nm. FT-IR study confirms a functional group and the presence of a Zinc ferrite band. Agglomerated and irregularly shaped particles were noticed from HRSEM. EDAX gives the elemental analysis of plant extract-mediated zinc ferrite nanoparticles. UV–visible spectrum shows the absorption in the UV region, and the energy gap was evaluated as 2.9 eV. The VSM study shows a small hysteresis loop confirming of soft magnetic nature of Zinc ferrite NPs. The agar well diffusion method depicts the antibacterial activity of plant extract mediated zinc ferrite nanoparticles was tested against both gram-positive and gram-negative bacterial strains. The antimicrobial activity of the samples on Bacillus subtilis (13 mm), Staphylococcus aureus (15 mm), and Escherichia coli (14 mm) was noted.

Graphical abstract