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dc.contributor.author |
Harmand, Lydie
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dc.contributor.author |
Bhosale, Dattary
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dc.contributor.author |
Beneš, Ludvík
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dc.contributor.author |
Palarčík, Jiří
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dc.contributor.author |
Kalendová, Andréa
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dc.contributor.author |
Sedlák, Miloš
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dc.date.accessioned |
2020-05-20T07:33:20Z |
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dc.date.available |
2020-05-20T07:33:20Z |
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dc.date.issued |
2014 |
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dc.identifier.isbn |
978-80-7395-814-5 |
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dc.identifier.issn |
1211-5541 |
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dc.identifier.uri |
https://hdl.handle.net/10195/75424 |
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dc.description.abstract |
The oxidation of ferrous sulfate in aqueous medium was used to prepare
hydrophilic nanoparticles of Fe3O4 with the hydrodynamic size of 114 ± 59 nm. By
means of sol-gel method, the nanoparticles were coated with a layer of amorphous
SiO2, which provided the Fe3O4@SiO2 nanoparticles with the size of 188 ± 36 nm.
The reaction of Fe3O4@SiO2 with 3-aminopropyltriethoxysilane resulted in
attaching of amino groups to the surface of the particles. During the reaction
lasting 1 hour, the original size of particles (190 ± 40 nm) remained unchanged,
and the total nitrogen content was 2.21 %, and the nitrogen content corresponding
to reactive amino groups was 1.22 %. A prolongation of the reaction time up to 3 hours resulted in production of aggregates and increase in the total nitrogen
content up to 3.75 %. However, the content of reactive nitrogen increased only
negligibly (1.30 %). The spherical shape of the Fe3O4@SiO2–NH2 particles
produced and their hydrodynamic size are suitable for applications to catalysis
as well as for biomedical applications. |
en |
dc.format |
p. 191–207 |
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dc.language.iso |
en |
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dc.publisher |
University of Pardubice |
en |
dc.relation.ispartof |
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 20/2014 |
en |
dc.rights |
open access |
en |
dc.title |
Synthesis and characterization of magnetic nanoparticles Fe3O4@SiO2 decorated with amino groups |
en |
dc.type |
Article |
en |
dc.peerreviewed |
yes |
en |
dc.publicationstatus |
published |
en |
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