One-pot synthesis and properties of Mn-doped maghemite nanoparticles using acetylacetonate precursors
A simple one-pot synthesis was utilized to prepare Mn-doped maghemite nanoparticles. A homogenized mixture of Mn- and Fe-acetylacetonates was heated in air atmosphere at 300 °C to produce Mn-doped maghemite. XRD showed only the presence of a spinel crystal structure with a linear increase of the uni...
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Veröffentlicht in: | Journal of radioanalytical and nuclear chemistry 2021-06, Vol.328 (3), p.1181-1187 |
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Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A simple one-pot synthesis was utilized to prepare Mn-doped maghemite nanoparticles. A homogenized mixture of Mn- and Fe-acetylacetonates was heated in air atmosphere at 300 °C to produce Mn-doped maghemite. XRD showed only the presence of a spinel crystal structure with a linear increase of the unit-cell volume up to 20 mol% of the Mn dopant. Possible structural changes with increased Mn doping are briefly discussed.
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Fe Mössbauer spectra recorded at 77 K were fitted with two sextets of lines corresponding to Fe
3+
ions at A-tetrahedral and B-octahedral sites in maghemite. FE SEM images showed that Mn-doped maghemite nanoparticles were of good uniformity, with the crystallite size varying from 24 to 35 nm, as determined by XRD. |
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ISSN: | 0236-5731 1588-2780 |
DOI: | 10.1007/s10967-021-07712-0 |