Magnetically separable reactive sorbent based on the CeO2/?-Fe2O3 composite and its utilization for rapid degradation of the organophosphate pesticide parathion methyl and certain nerve agents

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F15%3A00439271" target="_blank" >RIV/61388980:_____/15:00439271 - isvavai.cz</a>
Alternative codes found
RIV/44555601:13440/15:43886025 RIV/44555601:13520/15:43886025 RIV/61989100:27350/15:86090523
Result on the web
<a href="http://dx.doi.org/10.1016/j.cej.2014.10.016" target="_blank" >http://dx.doi.org/10.1016/j.cej.2014.10.016</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cej.2014.10.016" target="_blank" >10.1016/j.cej.2014.10.016</a>

Result language
angličtina
Original language name
Magnetically separable reactive sorbent based on the CeO2/?-Fe2O3 composite and its utilization for rapid degradation of the organophosphate pesticide parathion methyl and certain nerve agents
Original language description
A new kind of magnetically separable composite consisting of maghemite grains and cerium oxide nanocrystalline surface layer (CeO2/?-Fe2O3) was successfully used as so called "reactive sorbent" to decompose certain dangerous organophosphate compounds, including the organophosphorus pesticide parathion methyl and the chemical warfare agents soman and VX. The phosphatase-mimetic behaviour of the sorbent was also demonstrated. A reversed-mode co-precipitation of Fe3+/Fe2+ salts with aqueous ammonia was used to prepare the magnetite core, with the subsequent precipitation of cerous carbonate on the surfaces of the magnetite grains (again in the reversed mode) and its conversion to cerium oxide by calcination in the presence of air. The magnetite was converted to maghemite during calcination. Scanning electron microscopy (SEM), high-resolution transmission microscopy (HRTEM) and electron diffraction (ED) confirmed the presence of the nanocrystalline layer of CeO2 on the sorbent surface. The
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/GAP106%2F12%2F1116" target="_blank" >GAP106/12/1116: Nanocrystalline metal oxides for safe and fast degradation of organophosphorus pesticides</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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