Thermal decomposition of barium ferrate(VI): Mechanism and formation of Fe-IV intermediate and nanocrystalline Fe2O3 and ferrite

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33159830" target="_blank" >RIV/61989592:15310/16:33159830 - isvavai.cz</a>
Result on the web
<a href="http://www.sciencedirect.com/science/article/pii/S0925838816301864" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0925838816301864</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2016.01.185" target="_blank" >10.1016/j.jallcom.2016.01.185</a>

Result language
angličtina
Original language name
Thermal decomposition of barium ferrate(VI): Mechanism and formation of Fe-IV intermediate and nanocrystalline Fe2O3 and ferrite
Original language description
Simple high-valent iron-oxo species, ferrate(VI) ((FeO42-)-O-VI, Fe(VI)) has applications in energy storage, organic synthesis, and water purification. Of the various salts of Fe(VI), barium ferrate(VI) (BaFeO4) has also a great potential as a battery material. This paper presents the thermal decomposition of BaFeO4 in static air and nitrogen atmosphere, monitored by combination of thermal analysis, Mossbauer spectroscopy, X-ray powder diffraction, and electron-microscopic techniques. The formation of Fe-IV species in the form of BaFeO3 was found to be the primary decomposition product of BaFeO4 at temperature around 190 degrees C under both studied atmospheres. BaFeO3 was unstable in air reacting with CO2 to form barium carbonate and speromagnetic amorphous iron(III) oxide nanoparticles (<5 nm). Above 600 degrees C, a solid state reaction between BaCO3 and Fe2O3 occurred, leading to the formation of barium ferrite nanoparticles, BaFe2O4 (20-100 nm). (C) 2016 Elsevier B.V.
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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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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