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Citation: GU Renao, SHEN Xiao-ying, WANG Mei. Study on the Interaction of 2,2′-bipyridine and Zn Electrode by Surface-enhanced Raman Spectroscopy[J]. Acta Physico-Chimica Sinica, ;2005, 21(10): 1117-1121. doi: 10.3866/PKU.WHXB20051011 shu

Study on the Interaction of 2,2′-bipyridine and Zn Electrode by Surface-enhanced Raman Spectroscopy

1.
Department of Chemistry, Suzhou University, Suzhou 215006

Received Date: 7 March 2005
Available Online: 15 October 2005

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.
- Zn electrode;2,2′-bipyridine;Surface enhanced Raman spectroscopy; Adsorption;Conformational transition
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