Au单晶表面氟表面活性剂FSN自组装膜的电化学行为

doi:10.61558/2993-074X.2815

电化学（中英文） ›› 2011, Vol. 17 ›› Issue (1): 37-42. doi: 10.61558/2993-074X.2815

Au单晶表面氟表面活性剂FSN自组装膜的电化学行为

汤永安;颜佳伟;朱凤;孙春凤;毛秉伟;

厦门大学固体表面物理化学国家重点实验室化学化工学院化学系;

收稿日期:2011-02-28 修回日期:2011-02-28 出版日期:2011-02-28 发布日期:2011-02-28

Electrochemical Behaviors of Nonionic Fluorosurfactant Zonyl FSN Self-Assembled Monolayers on Au(111) and Au(100)

TANG Yong-an,YAN Jia-wei,ZHU Feng,SUN Chun-feng,MAO Bing-wei

(State Key Laboratory for Physical Chemistry of Solid Surfaces,and Department of Chemistry,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,Fujian,China

Received:2011-02-28 Revised:2011-02-28 Published:2011-02-28 Online:2011-02-28

摘要/Abstract

摘要： 研究Au(111)和Au(100)表面非离子型氟表面活性剂FSN自组装膜的电化学行为.电化学扫描隧道显微术和循环伏安法测试表明,在0～0.8 V电位区间,FSN自组装膜未发生氧化还原,均一性好,可稳定地存在于电极表面,并显著抑制硫酸根离子在电极表面的吸附和Au单晶表面的重构.在FSN自组装膜Au单晶电极的初始氧化阶段,Au(111)表面有少量突起,而Au(100)表面呈现台阶剧烈变化,但FSN自组装膜的吸附结构没有改变.与Au(100)表面相比,Au(111)表面形成的FSN自组装膜可更有效地抑制Au表面的氧化.

关键词: 非离子型氟表面活性剂, FSN, 自组装, Au(111), Au(100), 扫描隧道显微术

Abstract: The electrochemical behaviors of nonionic fluorosurfactant Zonyl FSN self-assembled monolayers on Au(111) and Au(100) were investigated by electrochemical scanning tunneling microscopy and cyclic voltammetry.In the potential range where the redox reaction of FSN molecules doesn′t occur,the structures of FSN self-assembled monolayers are uniform,which may suppress the adsorption of sulfate and the surface reconstruction of Au single crystal.At the initial stage of the oxidation of Au(111) and Au(100) surfaces covered by FSN self-assembled monolayers,Au(111) surface is characteristic of some protuberance,while Au(100) surface is characteristic of the movement of steps,however the structures of FSN self-assembled monolayers keep unchanged.Compared with Au(100),FSN self-assembled monolayers formed on Au(111) surface can suppress the oxidation of Au surface more efficiently.

Key words: nonionic fluorosurfactant, FSN, self-assembled monolayers, Au(111), Au(100), ECSTM

中图分类号:

O646.54

汤永安, 颜佳伟, 朱凤, 孙春凤, 毛秉伟, . Au单晶表面氟表面活性剂FSN自组装膜的电化学行为[J]. 电化学（中英文）, 2011, 17(1): 37-42.

TANG Yong-an, YAN Jia-wei, ZHU Feng, SUN Chun-feng, MAO Bing-wei . Electrochemical Behaviors of Nonionic Fluorosurfactant Zonyl FSN Self-Assembled Monolayers on Au(111) and Au(100)[J]. Journal of Electrochemistry, 2011, 17(1): 37-42.

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https://electrochem.xmu.edu.cn/CN/Y2011/V17/I1/37

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Au单晶表面氟表面活性剂FSN自组装膜的电化学行为

Electrochemical Behaviors of Nonionic Fluorosurfactant Zonyl FSN Self-Assembled Monolayers on Au(111) and Au(100)

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