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Acta Phys. -Chim. Sin.  2005, Vol. 21 Issue (10): 1117-1121    DOI: 10.3866/PKU.WHXB20051011
Article     
Study on the Interaction of 2,2′-bipyridine and Zn Electrode by Surface-enhanced Raman Spectroscopy
GU Renao; SHEN Xiao-ying; WANG Mei
Department of Chemistry, Suzhou University, Suzhou 215006
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Abstract  Surface enhanced Raman spectroscopy (SERS) was employed to study the adsorption of 2,2′-bipyridine(2,2′-biPy) on an electrochemical roughened Zn electrode. The results suggested that 2,2′-biPy adsorbed on Zn electrode with relatively strong interaction. For a relative positive initial potential, the potential of the 2,2′-biPy adsorption was negatively moved because of the adsorption of Zinc oxide species, while at a relative negative potential, the adsorption of 2,2′-biPy blocked the adsorption of oxygen species, and thus the 2,2′-biPy and oxygen species exhibited a competitive adsorption on Zn electrode. Moreover, the adsorption configuration of 2,2′-biPy was dependent on the applied potential. It was adsorbed through cis conformation to the surface at -1.3 V, while through trans conformation at -1.4 V.

Key wordsZn electrode      2,2′-bipyridine      Surface enhanced Raman spectroscopy      Adsorption      Conformational transition     
Received: 07 March 2005      Published: 15 October 2005
Corresponding Authors: GU Ren-ao     E-mail: ragu@suda.edu.cn
Cite this article:

GU Renao; SHEN Xiao-ying; WANG Mei. Study on the Interaction of 2,2′-bipyridine and Zn Electrode by Surface-enhanced Raman Spectroscopy. Acta Phys. -Chim. Sin., 2005, 21(10): 1117-1121.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20051011     OR     http://www.whxb.pku.edu.cn/Y2005/V21/I10/1117

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