| 碱性介质中纳米薄膜Ru电极上CO吸附的异常红外效应 |
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| 引用本文： | 郑明森,陈声培,孙世刚. 碱性介质中纳米薄膜Ru电极上CO吸附的异常红外效应[J]. 光谱学与光谱分析, 2000, 20(6): 755-757 |
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| 作者姓名： | 郑明森 陈声培 孙世刚 |
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| 作者单位： | 厦门大学化学系固体表面物理化学国家重点实验室,厦门,361005;厦门大学化学系固体表面物理化学国家重点实验室,厦门,361005;厦门大学化学系固体表面物理化学国家重点实验室,厦门,361005 |
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| 基金项目： | 国家自然科学基金!(2 98330 60 ),教育部科学技术重点研究项目!(991 77)资助 |
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| 摘 要： | 研制纳米级厚度的Ｒｕ薄膜电极,并运用电化学原位ＦＴＩＲ反射光谱研究碱性介质中ＣＯ的吸附。检测到ＣＯ以线型吸附态为主,但也存在少量桥式吸附态,分别在１９６０和１７８０ｃｍ＾－１附近红出红外吸收谱峰。发现纳米Ｒｕ膜电极具有异常红外效应,即ＣＯ谱峰方向倒反,强度增强和半峰宽增加,测得在碱性溶液中吸附态ＣＯ的红外吸收被增强了３３倍,其增强因子是酸性溶液中的两倍左右。
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| 关 键 词： | nm-Ru/GC CO FTIRS 增强因子 |
Abnormal Infrared Effects (AIREs) of nm-Ru/GC Electrode Towards CO Adsorption in Alkaline Solutions |
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| Mingsen ZHENG,Shengpei CHEN,Shigang SUN. Abnormal Infrared Effects (AIREs) of nm-Ru/GC Electrode Towards CO Adsorption in Alkaline Solutions[J]. Spectroscopy and Spectral Analysis, 2000, 20(6): 755-757 |
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| Authors: | Mingsen ZHENG Shengpei CHEN Shigang SUN |
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| Affiliation: | State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Institute of Physical Chemistry, Xiamen University, 361005 Xiamen. |
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| Abstract: | The adsorption of CO on electrode of nanometer thin film of Ru in 0.1 mol.L-1 NaOH solution was studied by using in-situ FTIR spectroscopy. The results revealed that the adsorbed CO in alkaline solutions is mainly in linear bonded from that yields IR absorption at around 1,960 cm-1, and a small portion of bridge bonded CO was also determined near 1,780 cm-1. The band centers of COL and COB have been red-shifted respectively about 50 and 60 cm-1 in comparison with the values measured in acid medium. The enhancement factor of IR absorption of CO on nm-Ru/GC electrode has been measured at 33 in 0.1 mol.L-1 NaOH solution, which is more than 2 times larger than the value determined in a 0.1 MH2SO4 solution. |
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| Keywords: | nm Ru/GC CO In situ FTIRES AIRE S |
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