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Updated: May 31, 2026

Manganese Oxide Nanoparticle Synthesis by Thermal Decomposition of Manganese(II) Acetylacetonate
09:02

Manganese Oxide Nanoparticle Synthesis by Thermal Decomposition of Manganese(II) Acetylacetonate

Published on: June 18, 2020

Enhanced functionalization of Mn2O3@SiO2 core-shell nanostructures.

Sonalika Vaidya1, Pallavi Thaplyal, Ashok Kumar Ganguli

  • 1Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110016, India. ashok@chemistry.iitd.ernet.in.

Nanoscale Research Letters
|June 30, 2011
PubMed
Summary

Synthesized Mn2O3@SiO2 core-shell nanostructures with high functional group density via improved hydrolysis method. These functionalized nanomaterials show potential for targeted drug delivery and element extraction.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Engineering

Background:

  • Core-shell nanostructures offer unique properties for various applications.
  • Functionalization of nanomaterials is crucial for targeted applications like drug delivery and extraction.
  • Existing methods for synthesizing functionalized core-shell structures have limitations in achieving high functional group density.

Purpose of the Study:

  • To synthesize novel Mn2O3@SiO2 core-shell nanostructures with high density of functional groups.
  • To develop an improved synthetic methodology compared to post-grafting or co-condensation.
  • To explore the potential applications of these functionalized nanostructures in biomolecule immobilization, drug delivery, and element extraction.

Main Methods:

  • Synthesis of Mn2O3 nanoparticles.

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  • Hydrolysis of organosilane precursors (silica, amino-, vinyl-, allyl-functionalized silica) over Mn2O3 nanoparticles.
  • Characterization using Transmission Electron Microscopy (TEM), Infrared Spectroscopy (IR), and zeta potential studies.
  • Immobilization of glucose and L-methionine onto amino-functionalized nanostructures.

    • Main Results:

    • Successfully synthesized Mn2O3@SiO2, Mn2O3@amino-functionalized silica, Mn2O3@vinyl-functionalized silica, and Mn2O3@allyl-functionalized silica core-shell nanostructures.
    • The developed hydrolysis method yields a higher density of functional groups compared to post-grafting methods, as confirmed by zeta potential studies.
    • Demonstrated successful immobilization of biomolecules (glucose and L-methionine) onto amino-functionalized nanostructures.

    Conclusions:

    • The improved hydrolysis method provides a superior route for creating highly functionalized core-shell nanostructures.
    • These functionalized nanostructures hold significant promise for applications in targeted drug delivery and the extraction of trace elements.
    • The ability to immobilize biomolecules highlights their potential in biosensing and biomedical fields.