| Methanol Electrooxidation on Smooth Platinum Modified with Ru：the Influence of Ru Coverage and Potentials on Oxidative Current and Products |
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| 引用本文： | 王红森.Methanol Electrooxidation on Smooth Platinum Modified with Ru：the Influence of Ru Coverage and Potentials on Oxidative Current and Products[J].中国化学,2003,21(10):1330-1334. |
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| 作者姓名： | 王红森 |
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| 作者单位： | DepartmentofChemistry,BeijingNormalUniversity,Beijing100875,China |
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| 基金项目： | ProjectsupportedbytheScientificResearchFoundationfortheReturnedOverseasChineseScholars ,StateEducationMinistry |
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| 摘 要： | Methanol oxidation on smooth Pt electrode modified with differ-ent coverage of Ru was studied using cyclic voltammetry and potential step combined with differential electrochemical mass spectroscopy. The current efficiency of formed CO2 was calcu-lated from faraday current and ion current of m/z = 44. The results show that Ru modified Pt electrode with the coverage of ca. 0.3 has the highest catalytic activity for methanol electroox-idation, i. e. faraday current and the current efficiency of CO2 at the low potentials reach to the maximum. In addition, Ru loses its co-catalytic properties at the high potentials.
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| 关 键 词： | 甲醇 电解氧化 铂 改性 Ru 覆盖 氧化物 Pt 电化学质谱分析 循环伏安法 钌 |
Methanol Electrooxidation on Smooth Platinum Modified with Ru: the Influence of Ru Coverage and Potentials on Oxidative Current and Products |
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| WANG,Hong Sen.Methanol Electrooxidation on Smooth Platinum Modified with Ru: the Influence of Ru Coverage and Potentials on Oxidative Current and Products[J].Chinese Journal of Chemistry,2003,21(10):1330-1334. |
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| Authors: | WANG Hong Sen |
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| Affiliation: | WANG,Hong Sen Department of Chemistry,Beijing Normal University,Beijing 100875,China |
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| Abstract: | Methanol oxidation on smooth Pt electrode modified with different coverage of Ru was studied using cyclic voltammetry and potential step combined with differential electrochemical mass spectroscopy. The current efficiency of formed CO 2 was calculated from faraday current and ion current of m/z =44. The results show that Ru modified Pt electrode with the coverage of ca . 0 3 has the highest catalytic activity for methanol electrooxidation, i.e. faraday current and the current efficiency of CO 2 at the low potentials reach to the maximum. In addition, Ru loses its co catalytic properties at the high potentials. |
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| Keywords: | methanol electrooxidation Ru modified Pt current efficiency of CO 2 differential electrochemical mass spectroscopy cyclic voltammetry potential step |
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