Fe content and calcination temperature effects on CuO nanoparticles
| Autor: | H.D. Colorado, Germán Antonio Pérez Alcázar |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Nuclear and High Energy Physics
Copper oxide Materials science 010308 nuclear & particles physics Coprecipitation Analytical chemistry Nanoparticle Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics law.invention chemistry.chemical_compound chemistry law 0103 physical sciences Mössbauer spectroscopy Calcination Crystallite Particle size Physical and Theoretical Chemistry 010306 general physics Monoclinic crystal system |
| Zdroj: | Hyperfine Interactions. 241 |
| ISSN: | 1572-9540 0304-3843 |
| DOI: | 10.1007/s10751-020-01720-4 |
| Popis: | In this work, a detailed study of the Fe doped effect on the structural properties of copper oxide nanoparticles (NP’s) is reported. The studied samples were those of the (Cu100–xFex)O system, with x = 0, 3, 6, 9, 12 and 15 for calcination temperatures of 140, 160, 180, 200, 220, 240 and 260 °C. The samples were prepared by the co-precipitation method. The molar concentration of the precipitator agent was 7 M. From the refinement of the diffraction patterns, using the Rietveld method, it was found that all the samples exhibit only one structural phase, that of CuO (tenorite), which is a monoclinic structure with space group C2/c, and the samples have crystallite sizes that range from 39 to 57 ± 1 nm, depending on the Fe content. By transmission electronic microscopy (TEM), it was observed that the mean particle size for the sample with 15 at. % Fe was 46 ± 19 nm. Combined with X-Ray diffraction (XRD) results, can be concluded that the nanoparticles are monocrystalline. Fe contributes to increasing the crystallite size and promoting its stability, which may be because of its affinity with oxygen, which contributes to a reduction of the oxygen vacancies. |
| Databáze: | OpenAIRE |
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