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Updated: Jan 15, 2026

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Synthesis-Dependent Magnetic Modifications in Starch-Coated CoFe2O4 Monodomain Nanoparticles: Structural, Magnetic

Zorica Ž Lazarević1, Valentin N Ivanovski2, Aleksandra Milutinović1

  • 1Institute of Physics-National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 68, Pregrevica 118, Zemun, 11080 Belgrade, Serbia.

Nanomaterials (Basel, Switzerland)
|October 15, 2025
PubMed
Summary

Starch coating improves cobalt ferrite (CoFe2O4) nanoparticle structure and stability. This surface modification tailors magnetic properties for biomedical applications without compromising functionality.

Keywords:
CoFe2O4Mössbauer spectroscopyRaman spectroscopystarch functionalization

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Cobalt ferrite (CoFe2O4) nanoparticles are promising for biomedical applications.
  • Controlling their structural and magnetic properties is crucial for functionality.
  • Surface functionalization is key to enhancing biocompatibility and stability.

Purpose of the Study:

  • To investigate the impact of starch functionalization on CoFe2O4 nanoparticles synthesized via five distinct methods.
  • To analyze how starch coating affects structural, spectroscopic, and magnetic properties.
  • To determine the influence of the initial synthesis method on the outcome of surface modification.

Main Methods:

  • Synthesis of CoFe2O4 nanoparticles using coprecipitation, ultrasound-assisted coprecipitation, mechanochemical treatment, microemulsion, and microwave-assisted hydrothermal methods.
  • Starch functionalization via sonication in a starch solution.
  • Characterization using X-ray diffraction (XRD), Raman spectroscopy, Mössbauer spectroscopy, and magnetic measurements.

Main Results:

  • Starch deposition reduces structural disorder and internal stress in CoFe2O4 nanoparticles.
  • Surface modification leads to a more uniform nanoparticle size distribution.
  • Structural changes induced by starch coating significantly influence magnetization, coercivity, and magnetic anisotropy.

Conclusions:

  • Starch functionalization is an effective strategy for tailoring the properties of CoFe2O4 nanoparticles.
  • The synthesis method critically influences the effectiveness of starch coating.
  • Surface modification preserves essential magnetic responses, making these nanoparticles suitable for biomedical applications.