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Effect of solution pH value changes on fluorescence intensity of magnetic-luminescent Fe3O4@Gd2O3:Eu3+ nanoparticles
- Source :
- Journal of Rare Earths. 34:71-76
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- In this paper, bifunctional Fe 3 O 4 @Gd 2 O 3 :Eu 3+ core-shell nanoparticles with both magnetic and fluorescent properties were synthesized through a urea homogeneous precipitation (UHP) method. Particular emphasis was placed on investigating the influence of the solution pH value on the photoluminescence of the core-shell nanocomposites. It showed that the samples treated at the solution of pH=3.0 had the highest luminescence due to the enhanced crystallinity and size uniformity of nanoparticles. The Fe 3 O 4 @Gd 2 O 3 :Eu 3+ nanocomposites exhibited an almost spherical shape with a mean diameter of 60 nm, and had strong red emissions of Eu 3+ at 612 nm as well as good magnetization with the saturation magnetization of 1.29 emu/g. It thus indicated that the core-shell nanocomposites investigated has great potential in biomedical applications.
- Subjects :
- Materials science
Photoluminescence
Nanocomposite
Analytical chemistry
Nanoparticle
Nanotechnology
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Fluorescence
0104 chemical sciences
Magnetization
chemistry.chemical_compound
Crystallinity
chemistry
Geochemistry and Petrology
0210 nano-technology
Bifunctional
Luminescence
Subjects
Details
- ISSN :
- 10020721
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Journal of Rare Earths
- Accession number :
- edsair.doi...........be7e523517be21f1606f4d136ac23e66