Thermal decomposition of Prussian Blue microcrystals and nanocrystals - iron(III) oxide polymorphism control through reactant particle size

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F13%3A33145066" target="_blank" >RIV/61989592:15310/13:33145066 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.rsc.org/en/content/articlepdf/2013/ra/c3ra42233j" target="_blank" >http://pubs.rsc.org/en/content/articlepdf/2013/ra/c3ra42233j</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/C3RA42233J" target="_blank" >10.1039/C3RA42233J</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal decomposition of Prussian Blue microcrystals and nanocrystals - iron(III) oxide polymorphism control through reactant particle size

Popis výsledku v původním jazyce

We present the first direct evidence that reactant particle size determines the mechanism of thermally, induced solid-state reactions and can be used as the tuner of the product crystal structure. This control of the polymorphous character of the products through the particle size of precursor is demonstrated upon following the process of isothermal decomposition of Prussian Blue at 350 uC in air. The reaction mechanism was studied by 57Fe Mossbauer spectroscopy, X-ray powder diffraction, magnetizationmeasurements, and transmission and scanning electron microscopy. The decomposition of Prussian Blue nanoparticles (10-15 nm) gave preferential formation of c-Fe2O3 nanoparticles (10-20 nm), while Prussian Blue microcrystals (20-50 mm) afforded formationof b-Fe2O3 nanoparticles (50-70 nm). The final polymorphous composition of the iron(III) oxide product is thought to be driven by the different diffusion conditions for penetration of the reaction gas (oxygen) into the Prussian Blue cryst

Název v anglickém jazyce

Thermal decomposition of Prussian Blue microcrystals and nanocrystals - iron(III) oxide polymorphism control through reactant particle size

Popis výsledku anglicky

We present the first direct evidence that reactant particle size determines the mechanism of thermally, induced solid-state reactions and can be used as the tuner of the product crystal structure. This control of the polymorphous character of the products through the particle size of precursor is demonstrated upon following the process of isothermal decomposition of Prussian Blue at 350 uC in air. The reaction mechanism was studied by 57Fe Mossbauer spectroscopy, X-ray powder diffraction, magnetizationmeasurements, and transmission and scanning electron microscopy. The decomposition of Prussian Blue nanoparticles (10-15 nm) gave preferential formation of c-Fe2O3 nanoparticles (10-20 nm), while Prussian Blue microcrystals (20-50 mm) afforded formationof b-Fe2O3 nanoparticles (50-70 nm). The final polymorphous composition of the iron(III) oxide product is thought to be driven by the different diffusion conditions for penetration of the reaction gas (oxygen) into the Prussian Blue cryst

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

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Svazek periodika

3

Číslo periodika v rámci svazku

42

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

19591-19599

Kód UT WoS článku

000325554400049

EID výsledku v databázi Scopus

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