| 非水体系中金电极表面增强拉曼光谱研究新进展 |
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| 引用本文： | 顾仁敖,曹文东,曹佩根,孙玉华,姚建林,任斌,田中群.非水体系中金电极表面增强拉曼光谱研究新进展[J].光谱学与光谱分析,2001,21(3):308-310. |
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| 作者姓名： | 顾仁敖 曹文东 曹佩根 孙玉华 姚建林 任斌 田中群 |
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| 作者单位： | 1. 苏州大学化学系
2. 厦门大学 化学系, |
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| 基金项目： | 国家自然科学基金，厦门大学固体表面物理化学国家重点实验室开放课题资助项目 |
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| 摘 要： | 利用共焦显微拉曼系统，进行了甲醇溶液中硫氰酸根离子（SCN^-）在金电极上吸附行为的表面增强拉曼光谱（SERS）研究，结果表明：SCN^-与电极之间的相互作用非常强烈，在整个研究电位范围内都可以检测到其SERS信号。在－0．1～－0．6V区间内，SCN^-主要是以S端吸附在电极表面：而在－0．7V～－1．2V区间内，SCN^-主要是以N端吸附在电极表面。
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| 关 键 词： | 非水体系 金电极 表面增强拉曼散射 甲醇 电化学 硫氰酸根离子 吸附 拉曼光谱 |
| 修稿时间： | 2000年1月9日 |
New Progress of Surface Enhanced Raman Spectroscopic Studies on a Gold Electrode in a Nonaqueous System |
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| R Gu,W Cao,P Cao,Y Sun,J Yao,B Ren,Z Tian.New Progress of Surface Enhanced Raman Spectroscopic Studies on a Gold Electrode in a Nonaqueous System[J].Spectroscopy and Spectral Analysis,2001,21(3):308-310. |
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| Authors: | R Gu W Cao P Cao Y Sun J Yao B Ren Z Tian |
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| Institution: | Department of Chemistry, Suzhou University, 215006 Suzhou. |
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| Abstract: | Based on a highly sensitive new generation confocal microprobe Raman system, the adsorption behavior of thiocyanate (SCN-) on a gold electrode in methanol solution was investigated by SERS for the first time. Preliminary results demonstrated that the interaction between SCN- and the electrode is so strong that its SERS signal can be detected in the whole research potential region (-0.1 V(-)-1.4 V). The orientation change may occur in the potential range -0.6 V-0.7 V. From -0.1 V to -0.6 V SCN- is adsorbed mainly through S end onto Au surface while in the potential range of -0.7 V to -1.2 V it is oriented mainly through N end. The potential dependence of the Raman frequency of nu CN resulted in two different values of electrochemical Stark effect, suggesting the existence of molecular orientation change. |
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| Keywords: | Nonaqueous system Gold electrode SERS Methanol Thiocyanate |
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