Electrochemical synthesis of magnetic iron oxide nanoparticles with controlled size

2011
journal article
article
101
dc.abstract.enWe present a novel and facile method enabling synthesis of iron oxide nanoparticles, which are composed mainly of maghemite according to X-ray diffraction (XRD) and Mössbauer spectroscopy studies. The proposed process is realized by anodic iron polarization in deaerated LiCl solutions containing both water and ethanol. Water seems to play an important role in the synthesis. Morphology of the product was studied by means of transmission electron microscopy and XRD. In the solution containing almost 100% of water a black suspension of round shaped maghemite nanoparticles of 20–40 nm size is obtained. Regulating water concentration allows to control nanoparticle size, which is reduced to 4–6 nm for 5% of water with a possibility to reach intermediate sizes. For 3% or lower water concentration nanoparticles are of a needle-like shape and form a reddish suspension. In this case phase determination is problematic due to a small particle size with the thickness of roughly 3 nm. However, XRD studies indicate the presence of ferrihydrite. Coercivities of the materials are similar to those reported for nanoparticle magnetite powders, whereas the saturation magnetization values are considerably smaller.
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.authorStarowicz, Maria
dc.contributor.authorStarowicz, Paweł - 100653
dc.contributor.authorŻukrowski, Jan
dc.contributor.authorPrzewoźnik, Janusz
dc.contributor.authorLemański, Andrzej
dc.contributor.authorKapusta, Czesław
dc.contributor.authorBanaś, Jacek
dc.date.accessioned2024-10-03T09:31:23Z
dc.date.available2024-10-03T09:31:23Z
dc.date.issued2011
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number12
dc.description.physical7167-7176
dc.description.versionostateczna wersja wydawcy
dc.description.volume13
dc.identifier.doi10.1007/s11051-011-0631-5
dc.identifier.eissn1572-896X
dc.identifier.issn1388-0764
dc.identifier.urihttps://ruj.uj.edu.pl/handle/item/449841
dc.languageeng
dc.language.containereng
dc.rightsUdzielam licencji. Uznanie autorstwa - Użycie niekomercyjne 2.0
dc.rights.licenceCC-BY-NC
dc.rights.urihttp://creativecommons.org/licenses/by-nc/2.0/legalcode
dc.share.typeinne
dc.subject.enmagnetic nanoparticles
dc.subject.eniron oxide
dc.subject.enmaghemite
dc.subject.enmagnetite
dc.subject.enelectrochemical synthesis
dc.subtypeArticle
dc.titleElectrochemical synthesis of magnetic iron oxide nanoparticles with controlled size
dc.title.journalJournal of Nanoparticle Research
dc.typeJournalArticle
dspace.entity.typePublicationen
dc.abstract.en
We present a novel and facile method enabling synthesis of iron oxide nanoparticles, which are composed mainly of maghemite according to X-ray diffraction (XRD) and Mössbauer spectroscopy studies. The proposed process is realized by anodic iron polarization in deaerated LiCl solutions containing both water and ethanol. Water seems to play an important role in the synthesis. Morphology of the product was studied by means of transmission electron microscopy and XRD. In the solution containing almost 100% of water a black suspension of round shaped maghemite nanoparticles of 20–40 nm size is obtained. Regulating water concentration allows to control nanoparticle size, which is reduced to 4–6 nm for 5% of water with a possibility to reach intermediate sizes. For 3% or lower water concentration nanoparticles are of a needle-like shape and form a reddish suspension. In this case phase determination is problematic due to a small particle size with the thickness of roughly 3 nm. However, XRD studies indicate the presence of ferrihydrite. Coercivities of the materials are similar to those reported for nanoparticle magnetite powders, whereas the saturation magnetization values are considerably smaller.
dc.affiliation
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego
dc.contributor.author
Starowicz, Maria
dc.contributor.author
Starowicz, Paweł - 100653
dc.contributor.author
Żukrowski, Jan
dc.contributor.author
Przewoźnik, Janusz
dc.contributor.author
Lemański, Andrzej
dc.contributor.author
Kapusta, Czesław
dc.contributor.author
Banaś, Jacek
dc.date.accessioned
2024-10-03T09:31:23Z
dc.date.available
2024-10-03T09:31:23Z
dc.date.issued
2011
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.number
12
dc.description.physical
7167-7176
dc.description.version
ostateczna wersja wydawcy
dc.description.volume
13
dc.identifier.doi
10.1007/s11051-011-0631-5
dc.identifier.eissn
1572-896X
dc.identifier.issn
1388-0764
dc.identifier.uri
https://ruj.uj.edu.pl/handle/item/449841
dc.language
eng
dc.language.container
eng
dc.rights
Udzielam licencji. Uznanie autorstwa - Użycie niekomercyjne 2.0
dc.rights.licence
CC-BY-NC
dc.rights.uri
http://creativecommons.org/licenses/by-nc/2.0/legalcode
dc.share.type
inne
dc.subject.en
magnetic nanoparticles
dc.subject.en
iron oxide
dc.subject.en
maghemite
dc.subject.en
magnetite
dc.subject.en
electrochemical synthesis
dc.subtype
Article
dc.title
Electrochemical synthesis of magnetic iron oxide nanoparticles with controlled size
dc.title.journal
Journal of Nanoparticle Research
dc.type
JournalArticle
dspace.entity.typeen
Publication
Affiliations

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