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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Thermal decomposition of Prussian Blue microcrystals and nanocrystals - iron(III) oxide polymorphism control through reactant particle size
Original language description
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
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)