| 硫酸溶液中Pt(111)电极面上存在SO2-4的XPS证据 |
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| 引用本文： | 翟润生,蔡茂盛,D.M.Kolb. 硫酸溶液中Pt(111)电极面上存在SO2-4的XPS证据[J]. 物理化学学报, 1994, 10(8): 741-743. DOI: 10.3866/PKU.WHXB19940815 |
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| 作者姓名： | 翟润生 蔡茂盛 D.M.Kolb |
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| 作者单位： | State Key Laboratory for Catalysis,Chinese Academy of Sciences,Dalian 116023,Fritz-Haber-Institute der Max-Planck-Gesellschaft,Germany;University Ulm,Germany |
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| 摘 要： | Pt（111）电极在硫酸溶液中的循环伏安图已被多个研究小组所得到[1-3]．对图上出现的高于正常氢吸脱附电位出现的两个电流峰（Clavilier等[1]首次发现并称之为异常峰）的解释至今没有得到一致意见．分歧焦点是异常峰的出现是由于强键合吸附氢还是吸附其它阴离子所致·本文用XPS和LEED研究异常峰电位处浮出的Pt（111）电极表面，发现尖锐异常峰的出现是由于表面上吸附了离子．1实验文献＊中详细说明了实验所用装置．主要部份是把装有XPS、LEED、MS、Ar“枪的超高真空腔门HV）与测量循环伏安图的腔（EC）联在一起·UHV中基压强为4x…
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| 关 键 词： | 循环伏安图 Pt(111)电极 硫酸溶液 XPS |
| 收稿时间： | 1993-03-15 |
| 修稿时间： | 1993-09-13 |
XPS Evidence of Sulfate Anion Adsorption on Emersed Pt(111) in H_2SO_4 Solution |
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| Zhai Runsheng. XPS Evidence of Sulfate Anion Adsorption on Emersed Pt(111) in H_2SO_4 Solution[J]. Acta Physico-Chimica Sinica, 1994, 10(8): 741-743. DOI: 10.3866/PKU.WHXB19940815 |
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| Authors: | Zhai Runsheng |
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| Affiliation: | State Key Laboratory for Catalysis,Chinese Academy of Sciences,Dalian 116023|Fritz-Haber-Institute der Max-Planck-Gesellschaft,Germany;University Ulm,Germany |
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| Abstract: | A detailed study of the cyclic voltammtry curve of Pt(111) electrode in H2SO4 solution by X-ray photoe1ectron spectroscopy (XPS) and a low energy electron diffeaction (LEED) has provided firstly direct evidence that the anomalous features reported originally by Clavilier et al. are associated with the specific adsorption of sulfate ainons rather than hydrogen adsorption. The ()R30 structure on Pt(111) obtained after electrode emersion on the positive scan at more positive potentials than 0.23V vs. Ag/AgCl appears sedtaneously with sharp increase of XPS of O1s and S2p. This implies the relationship between anomalous peak and sulfate anion adsorption on emersed Pt(111 ) electrode. |
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| Keywords: | Cyclic voltammmetry curve Pt(111) electrode H_2SO_4 solution XPS |
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