کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1260646 | 971751 | 2016 | 6 صفحه PDF | دانلود رایگان |
In this paper, bifunctional Fe3O4@Gd2O3:Eu3+ 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 Fe3O4@Gd2O3:Eu3+ nanocomposites exhibited an almost spherical shape with a mean diameter of 60 nm, and had strong red emissions of Eu3+ 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.
Graphical AbstractEmission spectra of Fe3O4@Gd2O3Eu3+ under different solution pH values (inset shows the strongest peak curve of the emission of nanocomposites under different solution pH values)Figure optionsDownload as PowerPoint slide
Journal: Journal of Rare Earths - Volume 34, Issue 1, January 2016, Pages 71–76