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<p>AgFeO<sub>2</sub> delafossite and Ag<sub>0.5</sub>Fe<sub>2.5</sub>O<sub>4</sub> nanoparticles were synthesized at 600°C by a flash auto-combustion method. The objective of this investigation is to improve the structural, magnetic, and antimicrobial properties of AgFeO<sub>2</sub> delafossite by substituting double and half-iron ions with Ag<sub>0.5</sub>Fe<sub>2.5</sub>O<sub>4</sub>. The X-ray diffraction pattern and atomic force microscopy analyses demonstrated that the particle size of the samples under investigation was within the nanoscale range. Ag<sub>0.5</sub>Fe<sub>2.5</sub>O<sub>4</sub> nanoparticles exhibited 2.3-fold increase in saturation magnetization compared to AgFeO<sub>2</sub> delafossite. Antimicrobial study showed significant antibacterial efficacy, particularly against <i>Escherichia coli</i>, while both nanoparticles lacked efficacy against <i>Aspergillus flavus</i>. These findings indicate that both samples have the potential to be utilized as antibacterial nanomaterials.</p>

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Enhancement of AgFeO2 Delafossite by Substitution of Double and Half-Iron Ions to be Applied in Biomedical Applications

  • 期刊论文

  • 发表日期：

    2025年5月15日

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  • H. K. Abdelsalam,
  • Asmaa A. H. El-Bassuony

摘要

AgFeO2 delafossite and Ag0.5Fe2.5O4 nanoparticles were synthesized at 600°C by a flash auto-combustion method. The objective of this investigation is to improve the structural, magnetic, and antimicrobial properties of AgFeO2 delafossite by substituting double and half-iron ions with Ag0.5Fe2.5O4. The X-ray diffraction pattern and atomic force microscopy analyses demonstrated that the particle size of the samples under investigation was within the nanoscale range. Ag0.5Fe2.5O4 nanoparticles exhibited 2.3-fold increase in saturation magnetization compared to AgFeO2 delafossite. Antimicrobial study showed significant antibacterial efficacy, particularly against Escherichia coli, while both nanoparticles lacked efficacy against Aspergillus flavus. These findings indicate that both samples have the potential to be utilized as antibacterial nanomaterials.