The manipulation of natural mineral chalcopyrite CuFeS.sub.2./sub. via mechanochemistry: properties and thermoelectric potential

0579710 - FZÚ 2024 RIV GB eng J - Článek v odborném periodiku
Baláž, P. - Dutková, E. - Baláž, M. - Daneu, N. - Findoráková, L. - Hejtmánek, Jiří - Levinský, Petr - Knížek, Karel - Bali Hudáková, M. - Džunda, R. - Bureš, R. - Puchý, V.
The manipulation of natural mineral chalcopyrite CuFeS₂ via mechanochemistry: properties and thermoelectric potential.
Physical Chemistry Chemical Physics. Roč. 25, č. 45 (2023), s. 31125-31136. ISSN 1463-9076. E-ISSN 1463-9084
Grant CEP: GA MŠMT(CZ) EF16_019/0000760
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: chalcopyrite * mechanical activation * thermoelectrics * bandgap manipulation
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.3, rok: 2022
Způsob publikování: Omezený přístup
https://doi.org/10.1039/d3cp01788e

In this study, the properties of the natural mineral chalcopyrite CuFeS2 after mechanical activation in a planetary mill were studied. The intensity of mechanical activation was controlled by changing the revolutions of the mill in the range 100–600 min-1. A series of characterization techniques, such as XRD, SEM, TEM, TA (DTA, TG, and DTG), particle size analysis, and UV-vis spectroscopy was applied and reactivity studies were also performed. Several new features were revealed for the mechanically activated chalcopyrite, e.g. the poly-modal distribution of produced nanoparticles on the micrometer scale, agglomeration effects by prolonged milling, possibility to modify the shape of the particles, X-ray amorphization and a shift from a non-cubic (tetragonal) structure to pseudo-cubic structure.
Trvalý link: https://hdl.handle.net/11104/0348943