Limits...
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.


Related in: MedlinePlus

Luminescent and magnetic properties of bifunctional nanocomposite (20 % Eu3+), before (a, b) and after (c, d) magnet capture. Shown samples were irradiated by UV lamp (λ = 254 nm)
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC3473191&req=5

Fig7: Luminescent and magnetic properties of bifunctional nanocomposite (20 % Eu3+), before (a, b) and after (c, d) magnet capture. Shown samples were irradiated by UV lamp (λ = 254 nm)

Mentions: Figure 7 presents the luminescent and magnetic properties of the Fe3O4/SiO2–GdPO4:Eu3+ 20 % nanoproduct dispersed in water. It is clearly seen that, after magnet capture, all the nanoparticles were attracted to the cuvette wall. When the UV light was on, the characteristic red luminescence of the Eu3+ ion was observed. This behavior confirms the formation of the hybrid, bifunctional nanophosphor.Fig. 7


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)

Luminescent and magnetic properties of bifunctional nanocomposite (20 % Eu3+), before (a, b) and after (c, d) magnet capture. Shown samples were irradiated by UV lamp (λ = 254 nm)
© Copyright Policy
Related In: Results  -  Collection

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

Fig7: Luminescent and magnetic properties of bifunctional nanocomposite (20 % Eu3+), before (a, b) and after (c, d) magnet capture. Shown samples were irradiated by UV lamp (λ = 254 nm)
Mentions: Figure 7 presents the luminescent and magnetic properties of the Fe3O4/SiO2–GdPO4:Eu3+ 20 % nanoproduct dispersed in water. It is clearly seen that, after magnet capture, all the nanoparticles were attracted to the cuvette wall. When the UV light was on, the characteristic red luminescence of the Eu3+ ion was observed. This behavior confirms the formation of the hybrid, bifunctional nanophosphor.Fig. 7

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