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Synthesis and Chara...
Synthesis and Characterization of Dendrimer-Encapsulated Iron and Iron-Oxide Nanoparticles
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- Baykal, A. (author)
- Fatih Univ, Istanbul, Turkey
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- Toprak, M. S. (author)
- KTH,Funktionella material, FNM
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- Durmus, Z. (author)
- Fatih Univ, Istanbul, Turkey
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- Senel, M. (author)
- Fatih Univ, Istanbul, Turkey
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- Sozeri, H. (author)
- Natl Metrol Inst, Gebze, Kocaeli, Turkey
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- Demir, A. (author)
- Fatih Univ, Istanbul, Turkey
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(creator_code:org_t)
- 2012-02-09
- 2012
- English.
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In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM. - : Springer Science and Business Media LLC. - 1557-1939 .- 1557-1947. ; 25:5, s. 1541-1549
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- In this paper, a series of iron (Fe) containing nanoparticles were prepared by employing PAMAM (Poly(amidoamine), dendrimers with different generations (G0-G3) as templates and sodium borohydride as a reducing agent. The products have been characterized by TEM, FT-IR, XRD, VSM, TGA, and XPS. XRD analysis reveal low crystallinity of formed particles within the dendrimers, however, crystallinity of the nanoparticles was observed to increase with increasing generation of dendrimers. Dominant phases were determined as magnetite (Fe3O4 or maghemite, gamma-Fe2O3). XPS analysis revealed the chemical composition of nanoparticles as iron oxide which indicated the oxidation of Fe species subsequent to the reduction process, in agreement with XRD analysis. The magnetization curves have superparamagnetic nonhysteretic characteristic at lower fields and with nonsaturation characteristic at high fields. Magnetic evaluation of samples with the 20:1 molar ratio of Fe:PAMAM showed decreasing superparamagnetic character and decreasing saturation magnetisation with increasing generation of dendrimers.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Dendrimers
- PAMAM
- Iron nanoparticles
- Magnetic properties
- XPS
Publication and Content Type
- ref (subject category)
- art (subject category)
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