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Synthesis of Au@Pd core-shell nanoparticles with controllable size and their application in surface-enhanced Raman spectroscopy

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Synthesis of Au@Pd core-shell nanoparticles with controllable size and their application in surface-enhanced Raman spectroscopy.htm (413bytes)
Date
2005-05
Author
Jia-Wen Hua
Yong Zhang
Jian-Feng Li
Zheng Liu
Bin Ren
任斌
Shi-Gang Sun
孙世刚
Zhong-Qun Tian
田中群
Tim Lian
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  • 化学化工-已发表论文 [14469]
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Abstract
Au core Pd shell (Au@Pd) nanoparticles with controllable size from 35 to 100 nm were prepared by chemical deposition, of Pd over pre-formed 12 nm Au seeds. Both transmission electron microscopy and LTV-visible spectroscopy studies confirmed the coreshell structure of the synthesized nanoparticles. The Au@Pd nanoparticles dispersed on a polished Pt electrode surface exhibit high surface-enhanced Raman scattering (SERS) effect for the adsorbed pyridine and SCN-. With the aid of the long-range effect of the electromagnetic (EM) enhancement created by the SERS-active Au core underneath the Pd shell, the good quality SERS spectra of adsorbates on the palladium metal overlayer can be obtained. Such kind of SERS-active substrate can be used as an alternative substrate to massive metals for investigating adsorption and reactions occurring on the Pd metal catalyst. (c) 2005 Elsevier B.V. All rights reserved.
Citation
CHEMICAL PHYSICS LETTERS,2005,408(4-6):354-359
URI
http://dx.doi.org/doi:10.1016/j.cplett.2005.04.071
https://dspace.xmu.edu.cn/handle/2288/11190

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