Effect of iron oxide nanoparticles functionalization by citrate analyzed using Mössbauer spectroscopy

Comparison of the Mössbauer spectra of the as-prepared native iron oxide nanoparticles (IONs) and the citrate-functionalized IONs demonstrates differences in the spectral shapes at room temperature and variations of the 57 Fe hyperfine parameters at 80 K. The observed differences are claimed to resu...

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Bibliographic Details
Published in:Hyperfine interactions 2020-12, Vol.241 (1), Article 27
Main Authors: Ushakov, Michael V., Sousa, M. H., Morais, Paulo C., Kuzmann, Ernő, Semionkin, Vladimir A., Oshtrakh, Michael I.
Format: Article
Language:English
Subjects:
1-6 September 2019
Atomic
China
Condensed Matter Physics
Dalian
Hadrons
Heavy Ions
Iron 57
Iron oxides
Molecular
Mossbauer spectroscopy
Nanoparticles
Nuclear Physics
Optical and Plasma Physics
Particle interactions
Physics
Physics and Astronomy
Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME2019)
Room temperature
Spectrum analysis
Surfaces and Interfaces
Thin Films
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Summary:Comparison of the Mössbauer spectra of the as-prepared native iron oxide nanoparticles (IONs) and the citrate-functionalized IONs demonstrates differences in the spectral shapes at room temperature and variations of the 57 Fe hyperfine parameters at 80 K. The observed differences are claimed to result from capping the IONs with citrate, thus decreasing the particle-particle interaction while promoting interaction of the outer atomic layers of the IONs with the surface molecular coating.
ISSN:0304-3843
1572-9540
DOI:10.1007/s10751-020-1701-9