Observation of c-CuFe2O4 nanoparticles of the same crystallite size in different nanocomposite materials: The influence of Fe3+ cations
| Autor: | Milica M. Vasić, Danilo Kisić, Violeta Nikolić |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Copper oxide
2L-Fhyd Materials science Coprecipitation Annealing (metallurgy) Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences Inorganic Chemistry chemistry.chemical_compound Ferrihydrite Materials Chemistry Physical and Theoretical Chemistry Fourier transform infrared spectroscopy Nanocomposite Structure 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Electronic Optical and Magnetic Materials CuO chemistry Chemical engineering Formation mechanism Ceramics and Composites Crystallite 0210 nano-technology CuFe2O4 |
| Zdroj: | Journal of Solid State Chemistry |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2019.04.007 |
| Popis: | Two samples containing 2-line ferrihydrite and copper oxide were synthesized by coprecipitation method, via variation of Fe3+ and Cu2+ precursors milimolar ratio (3:1 and 3:3.1), while the other synthesis parameters were kept constant. Annealing treatment at 1100 °C resulted in the formation of c-CuFe2O4-CuO-α-Fe2O3 and c-CuFe2O4-CuO nanocomposites, respectively. A comparison of properties of the prepared samples was performed by XRD, FTIR and EPR measurements. Formation mechanism of the nanocomposites is discussed with a reference to the influence of Jahn-Teller effect in CuO phase on the final CuFe2O4 structure. For the first time, it is shown that the amount of Fe3+ precursor is of key importance for the size of CuFe2O4 nanoparticles, and enables preparation of c-CuFe2O4 nanoparticles of the same crystallite size (46 nm) in different nanocomposite materials. © 2019 Elsevier Inc. |
| Databáze: | OpenAIRE |
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