Microwave Synthesis of Magnetite Nanoparticles and Mg-Doped Magnetite Nanoparticles by Precipitation of Fe 2+ Ions
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F21%3A73610186" target="_blank" >RIV/61989592:15640/21:73610186 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61989592:15310/21:73610186
Výsledek na webu
<a href="https://www.ingentaconnect.com/content/asp/jnn/2021/00000021/00000010/art00018" target="_blank" >https://www.ingentaconnect.com/content/asp/jnn/2021/00000021/00000010/art00018</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1166/jnn.2021.19357" target="_blank" >10.1166/jnn.2021.19357</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Microwave Synthesis of Magnetite Nanoparticles and Mg-Doped Magnetite Nanoparticles by Precipitation of Fe 2+ Ions
Popis výsledku v původním jazyce
This study is focused on a simple and fast synthesis of nonstoichiometric magnetite nanoparticles with the chemical formula Fe3-XO₄ and magnesium ferrite nanoparticles (Mg1-XFe2+XO₄). The nanoparticles were prepared with Fe2+ ions (FeSO₄ · H₂O) alkalised by KOH under oxidative conditions and in a microwave field. X-ray powder diffraction (XRD) and 57Fe transmission Mössbauer spectroscopy were used to determine the phase composition and crystal structure in detail. The presence of synthetic magnetite, maghemite, goethite, and magnesium ferrite was observed. Room temperature Mössbauer spectroscopy revealed the existence of ferromagnetic sublattices and superparamagnetic fraction. The superparamagnetic component corresponds to magnesium ferrite nanoparticles. Low temperature Mössbauer spectroscopy was used to locate the blocking temperature of superparamagnetic nanoparticles and to separate the sublattices. The presumed spherical morphology of nanoparticles and their size under 100 nm have been confirmed by transmission electron microscopy (TEM). The obtained results were used to provide possible reaction scheme, which serves to tailor the synthesis to a desired application.
Název v anglickém jazyce
Microwave Synthesis of Magnetite Nanoparticles and Mg-Doped Magnetite Nanoparticles by Precipitation of Fe 2+ Ions
Popis výsledku anglicky
This study is focused on a simple and fast synthesis of nonstoichiometric magnetite nanoparticles with the chemical formula Fe3-XO₄ and magnesium ferrite nanoparticles (Mg1-XFe2+XO₄). The nanoparticles were prepared with Fe2+ ions (FeSO₄ · H₂O) alkalised by KOH under oxidative conditions and in a microwave field. X-ray powder diffraction (XRD) and 57Fe transmission Mössbauer spectroscopy were used to determine the phase composition and crystal structure in detail. The presence of synthetic magnetite, maghemite, goethite, and magnesium ferrite was observed. Room temperature Mössbauer spectroscopy revealed the existence of ferromagnetic sublattices and superparamagnetic fraction. The superparamagnetic component corresponds to magnesium ferrite nanoparticles. Low temperature Mössbauer spectroscopy was used to locate the blocking temperature of superparamagnetic nanoparticles and to separate the sublattices. The presumed spherical morphology of nanoparticles and their size under 100 nm have been confirmed by transmission electron microscopy (TEM). The obtained results were used to provide possible reaction scheme, which serves to tailor the synthesis to a desired application.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
21001 - Nano-materials (production and properties)
Návaznosti výsledku
Projekt
<a href="/cs/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologie pro budoucnost</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
ISSN
1533-4880
e-ISSN
—
Svazek periodika
21
Číslo periodika v rámci svazku
10
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
9
Strana od-do
5165-5173
Kód UT WoS článku
999
EID výsledku v databázi Scopus
—