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Magnetic and luminescent hybrid nanomaterial based on Fe(3)O(4) nanocrystals and GdPO(4):Eu(3+) nanoneedles.

Runowski M, Grzyb T, Lis S - J Nanopart Res (2012)

Bottom Line: A magnetic phase was synthesized as a core/shell type composite.Also, the luminescent phase can move simultaneously with magnetite due to a "trapping" effect.GRAPHICAL ABSTRACT:

View Article: PubMed Central - PubMed

Affiliation: Department of Rare Earths, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland.

ABSTRACT
A bifunctional hybrid nanomaterial, which can show magnetic and luminescent properties, was obtained. A magnetic phase was synthesized as a core/shell type composite. Nanocrystalline magnetite, Fe(3)O(4) was used as the core and was encapsulated in a silica shell. The luminescent phase was GdPO(4) doped with Eu(3+) ions, as the emitter. The investigated materials were synthesized using a coprecipitation method. Encapsulated Fe(3)O(4) was "trapped" in a nano-scaffold composed of GdPO(4) crystalline nanoneedles. When an external magnetic field was applied, this hybrid composite was attracted in one direction. Also, the luminescent phase can move simultaneously with magnetite due to a "trapping" effect. The structure and morphology of the obtained nanocomposites were examined with the use of transmission electron microscopy and X-ray powder diffraction. Spectroscopic properties of the Eu(3+)-doped nanomaterials were studied by measuring their excitation and emission spectra as well as their luminescence decay times. GRAPHICAL ABSTRACT:

No MeSH data available.


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TEM image of nanocomposite based on Fe3O4/SiO2–GdPO4:Eu3+ 20 % nanoneedles
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Fig4: TEM image of nanocomposite based on Fe3O4/SiO2–GdPO4:Eu3+ 20 % nanoneedles

Mentions: Figure 4 presents the TEM image of the composite, magnetic-luminescent nanomaterial based on Fe3O4/SiO2 and GdPO4:Eu3+ nanoneedles. The calculated dimensions (from the TEM picture) of these nanoneedles are 40–250 nm long and 3–15 nm wide. This complex nanocomposite material showed simultaneously magnetic and luminescent properties.Fig. 4


Magnetic and luminescent hybrid nanomaterial based on Fe(3)O(4) nanocrystals and GdPO(4):Eu(3+) nanoneedles.

Runowski M, Grzyb T, Lis S - J Nanopart Res (2012)

TEM image of nanocomposite based on Fe3O4/SiO2–GdPO4:Eu3+ 20 % nanoneedles
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3473191&req=5

Fig4: TEM image of nanocomposite based on Fe3O4/SiO2–GdPO4:Eu3+ 20 % nanoneedles
Mentions: Figure 4 presents the TEM image of the composite, magnetic-luminescent nanomaterial based on Fe3O4/SiO2 and GdPO4:Eu3+ nanoneedles. The calculated dimensions (from the TEM picture) of these nanoneedles are 40–250 nm long and 3–15 nm wide. This complex nanocomposite material showed simultaneously magnetic and luminescent properties.Fig. 4

Bottom Line: A magnetic phase was synthesized as a core/shell type composite.Also, the luminescent phase can move simultaneously with magnetite due to a "trapping" effect.GRAPHICAL ABSTRACT:

View Article: PubMed Central - PubMed

Affiliation: Department of Rare Earths, Faculty of Chemistry, Adam Mickiewicz University, Grunwaldzka 6, 60-780 Poznan, Poland.

ABSTRACT
A bifunctional hybrid nanomaterial, which can show magnetic and luminescent properties, was obtained. A magnetic phase was synthesized as a core/shell type composite. Nanocrystalline magnetite, Fe(3)O(4) was used as the core and was encapsulated in a silica shell. The luminescent phase was GdPO(4) doped with Eu(3+) ions, as the emitter. The investigated materials were synthesized using a coprecipitation method. Encapsulated Fe(3)O(4) was "trapped" in a nano-scaffold composed of GdPO(4) crystalline nanoneedles. When an external magnetic field was applied, this hybrid composite was attracted in one direction. Also, the luminescent phase can move simultaneously with magnetite due to a "trapping" effect. The structure and morphology of the obtained nanocomposites were examined with the use of transmission electron microscopy and X-ray powder diffraction. Spectroscopic properties of the Eu(3+)-doped nanomaterials were studied by measuring their excitation and emission spectra as well as their luminescence decay times. GRAPHICAL ABSTRACT:

No MeSH data available.


Related in: MedlinePlus