A rapid one-step mechanosynthesis and characterization of nanocrystalline CaFe2O4 with orthorhombic structure

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F10%3A00357664" target="_blank" >RIV/61388980:_____/10:00357664 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
A rapid one-step mechanosynthesis and characterization of nanocrystalline CaFe2O4 with orthorhombic structure
Original language description
CaFe2O4 nanopowders were prepared via single-step mechanochemical processing of two various mixtures of precursors: simple oxides (CaO and alpha-Fe2O3) and elemental metal and oxide powders (Ca and alpha-Fe2O3). The mechanically induced evolution of theCaO/alpha-Fe2O3 and Ca/alpha-Fe2O3 mixtures was followed by Fe-57 Mossbauer spectroscopy, XRD, and HR-TEM. The mechanosynthesis of CaFe2O4 proceeds very rapidly if starting from the metal/oxide system: after only 1 h of the mechanochemical treatment performed at room temperature, the synthesis of the complex oxide is almost completed. This is in a strong contrast to the conventional solid-state synthesis of CaFe2O4, which requires prolonged exposure (similar to 20 h) at considerably elevated temperatures (similar to 1400 K).
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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