| 甲酸在Pt(100)/Sb电极上氧化的时间分辨原位FTIR反射光谱研究 |
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| 引用本文： | 杨毅芸,吴启辉,周志有,郑明森,陈声培,孙世刚.甲酸在Pt(100)/Sb电极上氧化的时间分辨原位FTIR反射光谱研究[J].光谱学与光谱分析,2000,20(6):765-767. |
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| 作者姓名： | 杨毅芸 吴启辉 周志有 郑明森 陈声培 孙世刚 |
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| 作者单位： | 厦门大学固体表面物理化学国家重点实验室,化学系,物化所,厦门,361005 |
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| 基金项目： | 国家自然科学基金资助课题!( 2 99730 35) |
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| 摘 要： | 以电化学原位时间分辨ＦＴＩＲ反射光谱和循环伏安方法研究甲酸在不同Ｓｂ覆盖度修饰的Ｐｔ（１００）单晶电极上的氧化。发现Ｓｂａｄ的修饰抑制了甲酸的解离吸附，使反应经活性中间体直接氧化至ＣＯ２。电化学和红外光谱数据表明，θＳｂ＝０．２４的Ｐｔ（１００）／Ｓｂ电极具有最高的电催化活性。
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| 关 键 词： | 时间分辨FTIRS 甲酸 氧化 Pt（100）／Sbad电极 |
In Situ Time-resolved FTIR Studies of HCOOH Oxidation on Pt(100)/Sb Electrodes |
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| Yiyun YANG,Qihui WU,Zhiyou ZHOU,Mingsen ZHENG,Shengpei CHEN,Shigang SUN.In Situ Time-resolved FTIR Studies of HCOOH Oxidation on Pt(100)/Sb Electrodes[J].Spectroscopy and Spectral Analysis,2000,20(6):765-767. |
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| Authors: | Yiyun YANG Qihui WU Zhiyou ZHOU Mingsen ZHENG Shengpei CHEN Shigang SUN |
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| Institution: | 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 electrocatalytic oxidation of formic acid on Pt(100)/Sb electrodes of different coverage of Sb was investigated by using electrochemical techniques and in situ time resolve FTIRS.The results demonstrated that the diessociative adsorption of formic acid was inhibited by the presence of Sb ad on Pt(100) surface,as a consequence HCOOH can be oxidized directly into CO 2 via reactive intermediates.The rate of oxidation of formic acid varied with the coverage of Sb ad .It was revealed that at a Sb ad coverage of 0 24 the Pt(100)/Sb electrode exhibited the highest electrocatalytic activity for HCOOH oxidation. |
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| Keywords: | HCOOH oxidation Pt(100)/Sb electrodes In Situ time resolved FTIRS |
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