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金属/乙腈界面微量水的增强拉曼光谱
引用本文:孙玉华,曹佩根,陈惠,顾仁敖,姚建林,田中群.金属/乙腈界面微量水的增强拉曼光谱[J].光散射学报,2002,14(4):205-207.
作者姓名:孙玉华  曹佩根  陈惠  顾仁敖  姚建林  田中群
作者单位:1. 苏州大学化学系,苏州,215006
2. 厦门大学固体表面物理化学国家重点实验室,化学系,厦门,361005
基金项目:国家自然科学基金资助项目 (编号 :2 98730 33)
摘    要:本文概述了我们最近利用表面增强拉曼散射技术研究金属 /乙腈界面区痕 /微量水分子的界面行为所取得的进展。研究表明银电极双电层中存在多种吸附模式下的水分子结构。处于非水环境下的水分子的νO H与水系相比存在明显的差别。水分子间的氢键被不同程度地破坏导致几种模式下的水分子νO H均要高于水体系。铂电极表面的研究表明水分子的介入很大程度上限制了铂表面乙腈分子的解离吸附反应。

关 键 词:表面增强拉曼散射  乙腈    银电极  铂电极
文章编号:1004-5929(2002)04-0205-03
修稿时间:2001年8月3日

Surface-enhanced Raman Spectroscopy of Water at Metal/acetonitrile Interface
SUN Yu-hua,CAO Pei-gen,CHEN Hui,GU Ren-ao ,YAO Jian-lin,TIAN Zhong-qun.Surface-enhanced Raman Spectroscopy of Water at Metal/acetonitrile Interface[J].Chinese Journal of Light Scattering,2002,14(4):205-207.
Authors:SUN Yu-hua  CAO Pei-gen  CHEN Hui  GU Ren-ao  YAO Jian-lin  TIAN Zhong-qun
Institution:SUN Yu-hua1,CAO Pei-gen1,CHEN Hui,GU Ren-ao 1*,YAO Jian-lin2,TIAN Zhong-qun2
Abstract:The progress on the study of the adsorption behavior of trace water at the interface of metal/acetonitrile as a function of applied potential by using surface-enhanced Raman scattering (SERS) was briefly reviewed in this paper. Results show that several adsorption modes of water exist in the electrochemical double layer of silver. There are great differences between the nonaqueous acetonitrile system and aqueous one on the frequency of the vibration of ν O-H, whose value is higher in nonaqueous system. Potential-dependent SER spectra obtained from Pt electrodes show that the addition of water with a certain concentration inhibited greatly the dissociation reaction of acetonitrile at the interface.
Keywords:SERS  nonaqueous system  acetonitrile  water  silver electrode  platinum electrode
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