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Issue 39, 2014
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Synthesis, novel luminescence properties, and surface-enhanced Raman scattering of Au/Y2O3:Eu3+ composite nanotubes

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Abstract

Y(OH)3:Eu3+ nanotubes were synthesized by a facile hydrothermal method first, and then Au particles were grown on the surface of Y2O3:Eu3+ nanotubes by combining the vacuum extraction method and the annealing process. The composite nanotubes were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The effects of the Au content on the photoluminescence properties of the Au/Y2O3:Eu3+ composite nanotubes were investigated in detail. In the excitation spectra of Au/Y2O3:Eu3+ monitored at 614 nm, the 7F05H3 transition from Eu3+ increased with increasing Au content, while the other sharp lines originating from Eu3+ f–f electron transitions almost vanished. In the emission spectra, the spectral configurations of Eu3+ in Au/Y2O3:Eu3+ composite nanotubes varied with the excitation wavelengths. When the excitation wavelength was 256 nm, the 5D47F0, 5D77F0, 5G27F0, 5L67F0, 5D07F0, 5D07F1, 5D07F2, 5D07F3, and 5D07F4 transitions from Eu3+ ions in Au/Y2O3:Eu3+ were observed. When the excitation wavelength was 378 nm, the plasmon resonance peak from Au nanoparticles was observed. In addition, 4-ATP was chosen as the model molecule to examine the performance of the Au/Y2O3:Eu3+ composite nanotubes as SERS substrates. The relative intensities of the SERS spectra enhanced with the increase of Au+ : Ln3+ ratio.

Graphical abstract: Synthesis, novel luminescence properties, and surface-enhanced Raman scattering of Au/Y2O3:Eu3+ composite nanotubes

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Article information


Submitted
30 Jun 2014
Accepted
06 Aug 2014
First published
22 Aug 2014

Dalton Trans., 2014,43, 14720-14725
Article type
Paper

Synthesis, novel luminescence properties, and surface-enhanced Raman scattering of Au/Y2O3:Eu3+ composite nanotubes

J. Su, G. Wang, Y. Li, R. Li, B. Xu, Y. Wang and J. Zhang, Dalton Trans., 2014, 43, 14720
DOI: 10.1039/C4DT01973C

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