Electron paramagnetic resonance study of paramagnetic centers in carbon-fumed silica adsorbent

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00432281" target="_blank" >RIV/68378271:_____/14:00432281 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4870578" target="_blank" >http://dx.doi.org/10.1063/1.4870578</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4870578" target="_blank" >10.1063/1.4870578</a>

Result language
angličtina
Original language name
Electron paramagnetic resonance study of paramagnetic centers in carbon-fumed silica adsorbent
Original language description
Fumed silica A-300 was carbonized by means of pyrolysis of CH2Cl2. The obtained initial SiO2:C nanopowders of black color, with an average diameter of 14?16 nm and carbon (C) concentration 7 wt. %, subjected to the oxidation and passivation treatment were studied by electron paramagnetic resonance (EPR) in the temperature range 4?400 K. Two EPR signals of Lorentzian lineshape with nearly equal g-factors and different linewidth were observed in the initial, oxidized, and passivated SiO2:C nanopowders. The two-component EPR spectrum was explained by the presence of C in two electronic states. The intensive narrow EPR signal, which has a temperature-dependent intensity, linewidth, and resonance field position, was attributed to the carbon-related defect with non-localized electron hopping between neighboring C-dangling bonds
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
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
<a href="/en/project/LM2011029" target="_blank" >LM2011029: SAFMAT - Centre of Functional Materials Analyses</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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