高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 398.

• Chemistry in Surface Science • 上一篇    下一篇

A Comparative Study on the Influence of Submonolayer Coverage Sn on SERS of Au and Pt Substrates

YAN Jia-Wei, SHE Chun-Xing, TANG Jing, TIAN Zhong-Qun, MAO Bing-Wei   

  1. State Key Laboratory for Physical Chemistry of Solid Surfaces, Institute of Physical Chemistry and Department of Chemistry, Xiamen University, Xiamen 361005
  • 出版日期:2000-12-31 发布日期:2000-12-31

A Comparative Study on the Influence of Submonolayer Coverage Sn on SERS of Au and Pt Substrates

YAN Jia-Wei, SHE Chun-Xing, TANG Jing, TIAN Zhong-Qun, MAO Bing-Wei   

  1. State Key Laboratory for Physical Chemistry of Solid Surfaces, Institute of Physical Chemistry and Department of Chemistry, Xiamen University, Xiamen 361005
  • Online:2000-12-31 Published:2000-12-31

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摘要：

Since the discovery of the surface enhanced Raman scattering (SERS) in mid-1970's,great efforts have been devoted to understand the enhancement mechanism as well as to extend the SERS system and application. There has been a consensus that the electromagnetic enhancement (EM) and chemical enhancement are the two important SERS mechanisms but each of them can only explain some of experimental results[1,2] The EM mechanism relies on the surface plasmon resonance under a proper incident laser excitation. Strong EM enhancement has been observed on metals such as Cu, Ag and Au but not on transition metals such as Pt. However, the surface electronic properties can be modulated through submonolayer quantity modification of foreign metal atoms, hi this paper, we report a comparative study on SERS of Au and Pt in the presence of underpotentially deposited (UPD) submonolayer Sn.

Abstract:

Since the discovery of the surface enhanced Raman scattering (SERS) in mid-1970's,great efforts have been devoted to understand the enhancement mechanism as well as to extend the SERS system and application. There has been a consensus that the electromagnetic enhancement (EM) and chemical enhancement are the two important SERS mechanisms but each of them can only explain some of experimental results[1,2] The EM mechanism relies on the surface plasmon resonance under a proper incident laser excitation. Strong EM enhancement has been observed on metals such as Cu, Ag and Au but not on transition metals such as Pt. However, the surface electronic properties can be modulated through submonolayer quantity modification of foreign metal atoms, hi this paper, we report a comparative study on SERS of Au and Pt in the presence of underpotentially deposited (UPD) submonolayer Sn.

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