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A surface-enhanced Raman spectroscopic (SERS) study of pyrazine adsorbed on roughened Rh electrodeswas performed. Potential and concentration effects on the adsorption behavior of pyrazine were investigated.The SER spectra display four pairs of overlapping bands with the relative intensity of each pair being highlypotential dependent, which has not been observed on other metals. The orientation change of the adsorbedpyrazine from the end-on to N/

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2006年12月06日

【期刊论文】Orientational behavior of cyanide on a roughened platinumsurface investigated by surface enhanced Raman spectroscopy

任斌， Bin Ren*， Xiao-Qin Li， De-Yin Wu， Jian-Lin Yao， Yong Xie， Zhong-Qun Tian

Chemical Physics Letters 322 (2000) 561-566，-0001，（）：

-1年11月30日

摘要

The surface Raman study of the electrode potential effect on the adsorption behavior of cyanide on the Pt surface wasperformed on a confocal microprobe Raman system with the help of a special surface pretreatment for the platinumelectrode. The abrupt change of the dependence of the CNy stretching vibration on the potential at ca. y0.6 V indicates asubtle orientation change of the adsorbed CN. This is supported by the changes of the Pt-C vibration located at ca. 400cmy1. A detailed discussion is given on the potential dependent adsorption behavior and the frequency shift of the majorvibrational bands.

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厦门大学，福建

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