Thermal stability of nanocrystalline ?-Fe2O3

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F14%3A00429198" target="_blank" >RIV/61388980:_____/14:00429198 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s10973-014-3711-9" target="_blank" >http://dx.doi.org/10.1007/s10973-014-3711-9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10973-014-3711-9" target="_blank" >10.1007/s10973-014-3711-9</a>

Result language
angličtina
Original language name
Thermal stability of nanocrystalline ?-Fe2O3
Original language description
Thermal behavior of highly crystalline ?-Fe2O3 nanoparticles of different apparent crystallite sizes was characterized using thermogravimetry, differential thermal analysis, and analysis of evolved gas by mass spectrometry. Phase composition of the samples was monitored ex situ by X-ray powder diffraction. The results show that the thermal stability of this metastable iron oxide polymorph decreases with increasing particle size. For the particle diameter of 19(2) nm, the transformation temperature was equal to 794(5) °C, while for 28(2) nm only 755(10) °C. Surface of the nanoparticles contained adsorbed water and carbon dioxide. Elimination of these species proceeds in two steps. Water is removed at temperatures below 200 °C and CO2 in the temperaturerange between 200 and 450 °C.
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
<a href="/en/project/GAP204%2F10%2F0035" target="_blank" >GAP204/10/0035: Hyperfine Interactions in Nanosized and Low-Dimensional Iron Oxides</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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