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<p>Co<sub>(1−x)</sub>Mn<sub>x</sub>Fe<sub>2</sub>O<sub>4</sub> (x = 0.1–0.5) ferrite nanoparticles (CMFNPs) were synthesized via an optimized coprecipitation method, and their antibacterial properties was evaluated. Structural analysis using X-ray diffraction (XRD) revealed crystallite sizes ranging from 11 to 13&#xa0;nm, which were influenced by the ionic radii of the divalent cations. Fourier-transform infrared (FTIR) spectroscopy identified functional groups present at 590&#xa0;cm<sup>−1</sup>, and 450&#xa0;cm<sup>−1</sup>, while optical band gap analysis revealed a slight variation in both direct and indirect band gaps with Mn doping, with the direct band gap ranging from 3.17 to 3.34&#xa0;eV. The morphology of the nanoparticles, as well as their elemental composition, were confirmed by energy-dispersive X-ray (EDX) spectroscopy, which showed the presence of Co, Mn, Fe, and O. The saturation magnetization (Ms) increased with Mn content, reaching a maximum of 85.34 emu/g at x = 0.5, while the coercivity (Hc) peaked at 243.30 Oe for x = 0.4, indicating enhanced magnetic anisotropy. The remanence ratio (Mr/Ms) also showed an increasing trend up to x = 0.4. The combination of antibacterial activity, along with favorable structural, optical, and magnetic properties, indicates that these CMFNPs are promising candidates for applications in biomedicine, environmental remediation, and advanced materials.</p>

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Structural, magnetic, and antibacterial properties of Mn-Substituted CoFe2O4 nanoparticles synthesized via coprecipitation

  • 期刊论文

  • 发表日期：

    2025年7月8日

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

摘要

Co(1−x)MnxFe2O4 (x = 0.1–0.5) ferrite nanoparticles (CMFNPs) were synthesized via an optimized coprecipitation method, and their antibacterial properties was evaluated. Structural analysis using X-ray diffraction (XRD) revealed crystallite sizes ranging from 11 to 13 nm, which were influenced by the ionic radii of the divalent cations. Fourier-transform infrared (FTIR) spectroscopy identified functional groups present at 590 cm−1, and 450 cm−1, while optical band gap analysis revealed a slight variation in both direct and indirect band gaps with Mn doping, with the direct band gap ranging from 3.17 to 3.34 eV. The morphology of the nanoparticles, as well as their elemental composition, were confirmed by energy-dispersive X-ray (EDX) spectroscopy, which showed the presence of Co, Mn, Fe, and O. The saturation magnetization (Ms) increased with Mn content, reaching a maximum of 85.34 emu/g at x = 0.5, while the coercivity (Hc) peaked at 243.30 Oe for x = 0.4, indicating enhanced magnetic anisotropy. The remanence ratio (Mr/Ms) also showed an increasing trend up to x = 0.4. The combination of antibacterial activity, along with favorable structural, optical, and magnetic properties, indicates that these CMFNPs are promising candidates for applications in biomedicine, environmental remediation, and advanced materials.