Mechanism of isochemical transformations of iron(III) oxide nanoparticles - Mössbauer study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F01%3A00001391" target="_blank" >RIV/61989592:15310/01:00001391 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27350/01:00001239

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Mechanism of isochemical transformations of iron(III) oxide nanoparticles - Mössbauer study

Original language description

The differences in the mechanism of the thermal transformation of cubic (b-Fe2O3, g-Fe2O3) nanoparticles are discussed and demonstrated with several experimental examples. Ultrafine particles of b-Fe2O3 were prepared by solid-state reaction of NaCl withFe2(SO4)3 in air, and by the thermal decomposition of Fe2(SO4)3. g-Fe2O3 nanoparticles were obtained by thermally-induced oxidation of FeSO4 and almandine garnet. Samples of nanocrystalline Fe2O3 particles were thermally treated in air at different temperatures and the changes of their structure, size and morphology were investigated using Mössbauer spectroscopy and atomic force microscopy (AFM). Mössbauer spectra proved the formation of e-Fe2O3 as intermediate during thermally induced transformation ofg-Fe2O3 nanoparticles to a-Fe2O3 while the direct transformation way was observed in the case of b-Fe2O3. All isochemical structural transformations were induced by the particle size increase, in accordance with AFM observations.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2001

Confidentiality

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

Name of the periodical

Journal of Nuclear and Radiochemical Sciences

ISSN

1345-2762

e-ISSN

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Volume of the periodical

2

Issue of the periodical within the volume

N

Country of publishing house

JP - JAPAN

Number of pages

2

Pages from-to

136-137

UT code for WoS article

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EID of the result in the Scopus database

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