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<p>Manganese ferrite (MnFe<sub>2</sub>O<sub>4</sub>) nanoparticles (MNFNP`s) were synthesized via auto-combustion method using four organic fuels as such urea, glycine, ethylene glycol also citric acid—to investigate their influence on structural, magnetic, optical, and antibacterial properties. Comprehensive characterization through XRD, XPS, VSM, UV-Vis, FESEM, EDX also FTIR confirmed single-phase cubic spinel structure with fuel-dependent crystallite sizes ranging from 26 to 43&#xa0;nm. Ethylene glycol produced the largest crystallites (43&#xa0;nm) while glycine yielded the smallest (26&#xa0;nm), directly correlating with magnetic properties where citric acid samples exhibited maximum coercivity (122.83 Oe) and ethylene glycol samples showed optimal saturation magnetization (67.54 emu/g). Optical analysis revealed tunable bandgap energies between 1.65 and 1.79&#xa0;eV, indicating enhanced visible-light absorption suitable for photocatalytic applications. Bio-functionalization with banana peel, green chili, and papaya extracts significantly enhanced antibacterial efficacy, achieving inhibition zones up to 17&#xa0;mm against Staphylococcus aureus and 15&#xa0;mm against Gram-negative bacteria through synergistic interactions between magnetic ferrite cores and bioactive phytochemicals. The systematic fuel variation demonstrates precise control over nanoparticle properties, establishing a versatile synthesis platform for tailoring MnFe<sub>2</sub>O<sub>4</sub> materials for specific applications in energy storage, targeted drug delivery, magnetic hyperthermia, and antimicrobial coatings. This work highlights the critical role of fuel selection in auto-combustion synthesis and positions bio-functionalized manganese ferrite nanoparticles as promising multifunctional nanomaterials for advanced technological and biomedical applications.</p>

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Magneto-structural correlation in MnFe2O4 nanocrystals synthesized by auto-combustion method

  • 期刊论文

  • 发表日期：

    2026年3月17日

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  • Ekanath K. Kore,
  • Arpana E. Kore,
  • Saniya A. Shaikh,
  • Girish P. Nargundkar,
  • Sushilkumar S. Bandgar,
  • Shaukat L. Tamboli,
  • Shailesh G. Pawar,
  • Sanjiv D. Chavan,
  • Chetan V. Chanmal

摘要

Manganese ferrite (MnFe2O4) nanoparticles (MNFNP`s) were synthesized via auto-combustion method using four organic fuels as such urea, glycine, ethylene glycol also citric acid—to investigate their influence on structural, magnetic, optical, and antibacterial properties. Comprehensive characterization through XRD, XPS, VSM, UV-Vis, FESEM, EDX also FTIR confirmed single-phase cubic spinel structure with fuel-dependent crystallite sizes ranging from 26 to 43 nm. Ethylene glycol produced the largest crystallites (43 nm) while glycine yielded the smallest (26 nm), directly correlating with magnetic properties where citric acid samples exhibited maximum coercivity (122.83 Oe) and ethylene glycol samples showed optimal saturation magnetization (67.54 emu/g). Optical analysis revealed tunable bandgap energies between 1.65 and 1.79 eV, indicating enhanced visible-light absorption suitable for photocatalytic applications. Bio-functionalization with banana peel, green chili, and papaya extracts significantly enhanced antibacterial efficacy, achieving inhibition zones up to 17 mm against Staphylococcus aureus and 15 mm against Gram-negative bacteria through synergistic interactions between magnetic ferrite cores and bioactive phytochemicals. The systematic fuel variation demonstrates precise control over nanoparticle properties, establishing a versatile synthesis platform for tailoring MnFe2O4 materials for specific applications in energy storage, targeted drug delivery, magnetic hyperthermia, and antimicrobial coatings. This work highlights the critical role of fuel selection in auto-combustion synthesis and positions bio-functionalized manganese ferrite nanoparticles as promising multifunctional nanomaterials for advanced technological and biomedical applications.