Nanočástice železo-uhlík připravené pyrolýzou toluenu a pentakrobonylu železa vyvolanou zářením CO2 laseru

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F06%3A00045344" target="_blank" >RIV/68081723:_____/06:00045344 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Iron-carbon nanoparticles prepared by CO2 laser pyrolysis of toluene and iron pentacarbonyl

Popis výsledku v původním jazyce

Abstract CO2 laser induced co-pyrolysis of toluene and iron pentacarbonyl in the presence of an ethylene sensitizer was used to produce iron-carbon nanostructures containing cementite Fe3C as the major component. The passivated Fe-C nanocomposites were characterized by several complementary analytical methods. Good agreement is found between the results of X-ray diffraction, Mössbauer spectroscopy and high-resolution transmission electron microscopy techniques which show that besides cementite, iron, and iron oxides, traces of other carbides are also present. Specific morphological aspects of the nanograins encased in a mostly disordered and quasi-amorphous carbon matrix are revealed. The simultaneous presence of rather small crystallites (mean diameter between 3?6 nm), identified as possible Fe3C/?-Fe and iron oxide (maghemite/magnetite) phases and of single-phase larger crystallites (10?13 nm mean diameter), identified as Fe3C is illustrated.

Název v anglickém jazyce

Iron-carbon nanoparticles prepared by CO2 laser pyrolysis of toluene and iron pentacarbonyl

Popis výsledku anglicky

Abstract CO2 laser induced co-pyrolysis of toluene and iron pentacarbonyl in the presence of an ethylene sensitizer was used to produce iron-carbon nanostructures containing cementite Fe3C as the major component. The passivated Fe-C nanocomposites were characterized by several complementary analytical methods. Good agreement is found between the results of X-ray diffraction, Mössbauer spectroscopy and high-resolution transmission electron microscopy techniques which show that besides cementite, iron, and iron oxides, traces of other carbides are also present. Specific morphological aspects of the nanograins encased in a mostly disordered and quasi-amorphous carbon matrix are revealed. The simultaneous presence of rather small crystallites (mean diameter between 3?6 nm), identified as possible Fe3C/?-Fe and iron oxide (maghemite/magnetite) phases and of single-phase larger crystallites (10?13 nm mean diameter), identified as Fe3C is illustrated.

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

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Applied Physics A - Materials Science & Processing

ISSN

0947-8396

e-ISSN

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Svazek periodika

85

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

53-62

Kód UT WoS článku

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EID výsledku v databázi Scopus

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