| In situ time-resolved FTIRS study of adsorption and oxidation of ethylene glycol on Pt（100） electrode |
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| 作者姓名： | FAN Youjun ZHOU Zhiyou FAN Chunjie ZHEN Chunhua CHEN Shengpei SUN Shigang |
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| 作者单位： | State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, China |
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| 基金项目： | Acknowledgements This work was supported by the National Natural Science Foundation of China （Grant Nos. 20373059 and 90206039） and the “973” Program （Grant No. 2002CB211804）. |
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| 摘 要： | Adsorption and oxidation of ethylene glycol （EG） on Pt（100） electrode were studied by in situ timeresolved FTIRS （TRFTIRS）. The TRFTIR spectra recorded at 0.10 V illustrate that an IR band appears near 2050 cm^-1 at t 〉 5 s, corresponding to linearly bonded CO formed in dissociative adsorption of EG. The TRFTIR results have confirmed also that CO species are distributed uniformly on Pt（100） surface. Another band appears near 2342 cm^-1 at t 〉 70 s, associating with IR absorption of CO2 produced in the direct oxidation of EG. With the increase of electrode potential, the direct oxidation of EG becomes gradually the main reaction： When the potential is above 0.40 V, the oxidation of EG occurs mainly via the reactive intermediates, i.e. species containing -COOH determined by in situ TRFTIRS.
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| 关 键 词： | 乙烯乙二醇 FTIRS 吸附理论 电极 分离氧化 |
| 收稿时间： | 2004-10-29 |
| 修稿时间： | 2004-10-292005-03-21 |
In situ time-resolved FTIRS study of adsorption and oxidation of ethylene glycol on Pt(100) electrode |
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| FAN Youjun ZHOU Zhiyou FAN Chunjie ZHEN Chunhua CHEN Shengpei SUN Shigang.In situ time-resolved FTIRS study of adsorption and oxidation of ethylene glycol on Pt(100) electrode[J].Chinese Science Bulletin,2005,50(18):1995-1998. |
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| Authors: | Youjun Fan Zhiyou Zhou Chunjie Fan Chunhua Zhen Shengpei Chen Shigang Sun |
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| Institution: | FAN Youjun, ZHOU Zhiyou, FAN Chunjie, ZHEN Chunhua, CHEN Shengpei & SUN Shigang State Key Laboratory of Physical Chemistry of Solid Surfaces, Depart-ment of Chemistry, Xiamen University, Xiamen 361005, China |
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| Abstract: | Adsorption and oxidation of ethylene glycol (EG) on Pt(100) electrode were studied by in situ time-resolved FTIRS (TRFTIRS). The TRFTIR spectra recorded at 0.10 V illustrate that an IR band appears near 2050 cm-1 at t > 5 s, corresponding to linearly bonded CO formed in dissociative adsorption of EG. The TRFTIR results have confirmed also that CO species are distributed uniformly on Pt(100) surface. Another band appears near 2342 cm-1 at t > 70 s, associating with IR absorption of CO2 produced in the direct oxidation of EG. With the increase of electrode potential, the direct oxidation of EG becomes gradually the main reaction. When the potential is above 0.40 V, the oxidation of EG occurs mainly via the reactive intermediates, i.e. species containing –COOH determined by in situ TRFTIRS |
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| Keywords: | ethylene glycol Pt(100) electrode dissociative adsorptionand oxidation in situ time-resolved FTIR spectroscopy |
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