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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/44555601:13440/15:43886025 RIV/44555601:13520/15:43886025 RIV/61989100:27350/15:86090523

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP106%2F12%2F1116" target="_blank" >GAP106/12/1116: Nanokrystalické oxidy kovů pro bezpečnou a rychlou degradaci organofosforečných pesticidů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

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Svazek periodika

262

Číslo periodika v rámci svazku

FEB

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

747-755

Kód UT WoS článku

000347577700082

EID výsledku v databázi Scopus

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