| nitial Potential" Effect on the Dissociative Adsorption of Methanol on A Roughened Platinum Electrode in Acidic Solution |
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| 引用本文： | Ze Lin LI1*,Bin REN2,Chun Xing SHE2,Xiao Ming XIAO1,Zhong Qun TIAN2* 1Department of Chemistry,Hunan Normal University,Changsha 410081 2State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry,Xiamen University,Xia. nitial Potential" Effect on the Dissociative Adsorption of Methanol on A Roughened Platinum Electrode in Acidic Solution[J]. 中国化学快报, 2001, 0(10) |
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| 作者姓名： | Ze Lin LI1* Bin REN2 Chun Xing SHE2 Xiao Ming XIAO1 Zhong Qun TIAN2* 1Department of Chemistry Hunan Normal University Changsha 410081 2State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry Xiamen University Xia |
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| 作者单位： | Ze Lin LI1*，Bin REN2，Chun Xing SHE2，Xiao Ming XIAO1，Zhong Qun TIAN2* 1Department of Chemistry，Hunan Normal University，Changsha 410081 2State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry，Xiamen University，Xia |
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| 基金项目： | Financial support by the National Natural Science Foundation of China (29833060，29903009，20073012)，and Visiting Scholar Foundation in State Key Labs of Ministry of Education of China，is gratefully acknowledged. |
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| 摘 要： | The research of electrocatalytic oxidation of small organic molecules such as methanol, formaldehyde and formic acid has been fascinating electrochemists for more than thirty years, owing to its significance in energy conversion and reaction mechanisms. The surface adsorbed species involved in these electrocatalytic reactions, especially reactive and poisoning intermediates, have been investigated by electrochemical, spectroscopic and other physicochemical methods1. However, Raman spectrosco…
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nitial Potential" Effect on the Dissociative Adsorption of Methanol on A Roughened Platinum Electrode in Acidic Solution |
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| Ze Lin LI,Bin REN,Chun Xing SHE,Xiao Ming XIAO,Zhong Qun TIAN. nitial Potential" Effect on the Dissociative Adsorption of Methanol on A Roughened Platinum Electrode in Acidic Solution[J]. Chinese Chemical Letters, 2001, 0(10) |
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| Authors: | Ze Lin LI Bin REN Chun Xing SHE Xiao Ming XIAO Zhong Qun TIAN |
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| Affiliation: | Ze Lin LI1*,Bin REN2,Chun Xing SHE2,Xiao Ming XIAO1,Zhong Qun TIAN2* 1Department of Chemistry,Hunan Normal University,Changsha 410081 2State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry,Xiamen University,Xia |
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| Abstract: | In situ Raman spectroscopic and voltammetric studies indicate that dissociative adsorption of methanol on the rough platinum electrode occurs in the hydrogen ad/desorption potential range, and the dissociative extent depends on the initial potential of the electrode before contacting methanol, in addition to the contacting time. As the dissociative product, carbon monoxide competes the site of strongly bound hydrogen preferentially, and shifts the ad/desorption potentials of weakly bound hydrogen towards more positive ones gradually with the increase of CO coverage. Whereas, formaldehyde dissociates more easily by far and completely suppresses H-adsorption. The confocal Raman spectroscopy developed on transition metals shows some intriguing advantages in investigating electrocatalytic oxidation of small organic molecules. |
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| Keywords: | Methanol formaldehyde dissociative adsorption in situ Raman spectroscopy. |
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