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Electrochemical polymerization of acetylene on Rh electrodes probed by surface-enhanced Raman spectroscopy

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Electrochemical polymerization of acetylene on Rh electrodes probed by surface-enhanced Raman spectroscopy.htm (413bytes)
Date
2006-07
Author
Liu, Guo-kun
任斌
Wu, De-yin
吴德印
Lin, Tan-ming
Gu, Ren-ao
顾仁敖
Tian, Zhong-qun
田中群
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  • 化学化工-已发表论文 [14469]
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Abstract
By combining cyclic voltammetry (CV) and surface-enhanced Raman spectroscopy (SERS), the electrochemical behaviors of acetylene (C2H2) on a roughened Rh electrode in 0.1 M HClO4 solution were studied. On both roughened and smooth Rh surfaces, a clear loop in the cyclic voltammogram was observed in the negative potential region, indicating the formation of a new phase. However, only on the roughened Rh surface was the Raman signal of surface species observed. The resemblance of the detected signal to that of polyacetylene indicates the occurrence of polymerization of acetylene at potentials more negative than -0.3 V. The electropolymerization of acetylene is proceeded via an electrochemical radical addition assisted by hydrogen radical. A combined contribution of both the resonant Raman effect and especially surface-enhanced Raman effect may account for the observed signal. (c) 2006 Published by Elsevier B.V.
Citation
JOURNAL OF ELECTROANALYTICAL CHEMISTRY,2006,594(2):73-79
URI
http://dx.doi.org/doi:10.1016/j.jelechem.2006.04.013
https://dspace.xmu.edu.cn/handle/2288/10066

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