Nanocomposite of CeO2 and high-coercivity magnetic carrier with large specific surface area

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00469281" target="_blank" >RIV/68378271:_____/16:00469281 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/16:00469281 RIV/61389013:_____/16:00469281 RIV/00216208:11310/16:10335156

Výsledek na webu

<a href="http://dx.doi.org/10.1155/2016/7091241" target="_blank" >http://dx.doi.org/10.1155/2016/7091241</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1155/2016/7091241" target="_blank" >10.1155/2016/7091241</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanocomposite of CeO2 and high-coercivity magnetic carrier with large specific surface area

Popis výsledku v původním jazyce

We succeeded in the preparation of CoFe2O4/ CeO2 nanocomposites with very high specific surface area (up to 264 g/m2). First, highly crystalline nanoparticles (NPs) of CoFe2O4/ (4.7 nm) were prepared by hydrothermal method in water-alcohol-oleic acid system. The oleate surface coating was subsequently modified by ligand exchange to citrate. Then the NPs wereembedded in CeO2 using heterogeneous precipitation from diluted Ce3+ sulphate solution. Dried samples were characterized by Powder X-Ray Diffraction, Energy Dispersive X-Ray Analysis, Scanning and Transmission Electron Microscopy, Mössbauer Spectroscopy, and Brunauer-Emmett-Teller method. Moreover, detailed investigation of magnetic properties of the bare NPs and final composite was carried out. We have thus demonstrated that the proposed synthesis method is suitable for preparation of extremely fine CeO2 nanopowders and their nanocomposites with NPs. The morphology and magnetic nature of the obtained nanocomposites make them a promising candidate for magnetoresponsive catalysis.n

Název v anglickém jazyce

Nanocomposite of CeO2 and high-coercivity magnetic carrier with large specific surface area

Popis výsledku anglicky

We succeeded in the preparation of CoFe2O4/ CeO2 nanocomposites with very high specific surface area (up to 264 g/m2). First, highly crystalline nanoparticles (NPs) of CoFe2O4/ (4.7 nm) were prepared by hydrothermal method in water-alcohol-oleic acid system. The oleate surface coating was subsequently modified by ligand exchange to citrate. Then the NPs wereembedded in CeO2 using heterogeneous precipitation from diluted Ce3+ sulphate solution. Dried samples were characterized by Powder X-Ray Diffraction, Energy Dispersive X-Ray Analysis, Scanning and Transmission Electron Microscopy, Mössbauer Spectroscopy, and Brunauer-Emmett-Teller method. Moreover, detailed investigation of magnetic properties of the bare NPs and final composite was carried out. We have thus demonstrated that the proposed synthesis method is suitable for preparation of extremely fine CeO2 nanopowders and their nanocomposites with NPs. The morphology and magnetic nature of the obtained nanocomposites make them a promising candidate for magnetoresponsive catalysis.n

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Nanomaterials

ISSN

1687-4110

e-ISSN

—

Svazek periodika

2016

Číslo periodika v rámci svazku

Nov

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

000392006400001

EID výsledku v databázi Scopus

2-s2.0-85009431356