Electrochemical Preparation and Spectral Properties of Au-Hg Core-shell Nanoparticles

Abstract

Abstract: Gold nanoparticles were assembled on the polyvinylpyridine modified ITO electrode to form a particle monolayer.Mercury nanoshell on the surface of the gold nanoparticles was obtained by electrochemical deposition.The formation of the mercury nanoshell resulted in a red shift and damping of the surface plasmon resonance of the inner gold nanoparticles.Molecules adsorbed on the mercury nanoshell can still experience the enhanced electric field from the gold core,as a result,the Raman scattering of the adsorbed molecules can be greatly enhanced.

Key words: Gold nanoparticles, Mercury nanoshell, Electrochemistry, Surface-enhanced Raman spectroscopy, Absorption spectroscopy

CLC Number:

O561.3

TrendMD:

LI Xiao-Wei, ZHOU Qun, ZHUANG Yan, ZHENG Jun-Wei, LU Tian-Hong . Electrochemical Preparation and Spectral Properties of Au-Hg Core-shell Nanoparticles[J]. Chem. J. Chinese Universities, 2005, 26(10): 1869.

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Electrochemical Preparation and Spectral Properties of Au-Hg Core-shell Nanoparticles

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