Pt(100)/离子液体OMIPF6界面结构的STM研究

doi:10.13208/j.electrochem.160565

摘要/Abstract

摘要：

本文运用电化学扫描隧道显微术研究了离子液体OMIPF₆中Pt（100）表面结构在电化学双层区随电极电位的变化. OMI⁺阳离子在Pt（100）表面形成有序吸附结构，并且在约1.2 V宽的电位区间内稳定地存在Pt（100）表面。在电位负于-0.6 V时，有序吸附结构会发生向无序吸附结构的转变. 在电位正于+0.6 V时，较强的静电排斥力才能克服OMIPF₆与Pt（100）表面之间的化学作用，从而导致OMI+阳离子的脱附. 研究表明，OMI+阳离子具有的较长烷基侧链与Pt金属产生的较强化学相互作用是影响该Pt（100）/ OMIPF6界面结构的重要因素.

关键词: 电化学界面, 离子液体, Pt(100), 有序吸附

Abstract:

Potential-dependent structures of Pt(100)/ionic liquid 1-methyl-3-octylimidazolium hexafluorophosphate (OMIPF₆) interface have been studied by electrochemical scanning tunneling microscopy (ECSTM). The cation OMI⁺ forms ordered structure on Pt(100) surface, which exists in a potential region of about 1.2 V. When the potential is more negative than -0.6 V, it can be seen that the ordered structure transforms to disordered structure. When the potential shifts positively to +0.6 V, the desorption of cations OMI⁺occurs, which indicates that strong electrostatic repulsion is needed to overcome chemical interaction between OMIPF6 and Pt(100) surface, leading to the desorption. The above results demonstrate that owing to the longer alkyl chain OMI+ can interact strongly with Pt(100), which plays an important role in the structure of Pt(100)/ OMIPF₆ interface.

Key words: Electrochemical interface, Ionic liquid, Pt(100), Ordered adsorption

中图分类号:

O646

彭瑾，李棉刚，谢立强，颜佳伟，毛秉伟. Pt(100)/离子液体OMIPF₆界面结构的STM研究[J]. 电化学（中英文）, 2016, 22(6): 596-601.

PENG Jin, LI Mian-gang, XIE Li-qiang, YAN Jia-wei, MAO Bing-wei. An STM study on the Structure of Pt(100)/Ionic Liquid OMIPF₆ Interface[J]. Journal of Electrochemistry, 2016, 22(6): 596-601.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://electrochem.xmu.edu.cn/CN/10.13208/j.electrochem.160565

https://electrochem.xmu.edu.cn/CN/Y2016/V22/I6/596

参考文献

[1]. Michel Armand, Frank Endres, Douglas R. MacFarlane, et al. Ionic-liquid materials for the electrochemical challenges of the future[J]. Nature Materials, 2009, 8(8): 621-629.

[2]. Douglas R. Macfarlane, Maria Forsyth, Patrick C. Howlett, et al. Ionic liquids in electrochemical devices and processes: managing interfacial Electrochemistry[J]. Accounts Of Chemical Research, 2007, 40(11): 1165-1173.

[3]. Ohno,Hiroyuki, Electrochemical aspects of ionic liquids. Wiley-Interscience. 110-111.

[4]. Maxim V. Fedorov,Alexei A. Kornyshev. Ionic Liquids at Electrified Interfaces[J]. Chemical Reviews, 2014, 114(5): 2978-3036.

[5]. Li M G, Chen L, Zhong Y X, et al. The electrochemical interface of Ag(111) in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid-A combined in-situ scanning probe microscopy and impedance study[J]. Electrochimica Acta, 2016, 197: 282-289.

[6]. Su Y Z, Fu Y C, Wei Y M, et al. The Electrode/Ionic Liquid Interface: Electric Double Layer and Metal Electrodeposition[J]. Chemphyschem, 2010, 11(13): 2764-2778.

[7]. Zhong Y X, Yan J W, Li M G, et al. Electric Double Layer in Ionic Liquid Incorporated with Water Molecules: An AFM Force Curve Study[J]. ChemElectroChem, 2016. DOI: 10.1002/celc.201600177

[8]. Su Y Z, Yan J W, Li M G, et al. Electric Double Layer of Au(100)/Imidazolium-Based Ionic Liquids Interface: Effect of Cation Size[J]. Journal Of Physical Chemistry C, 2013, 117(1): 205-212.

[9]. Su Y Z., Fu Y C., Yan J W., et al. Double Layer of Au(100)/Ionic Liquid Interface and Its Stability in Imidazolium-Based Ionic Liquids[J]. Angewandte Chemie-International Edition, 2009, 48(28): 5148-5151.

[10]. O. Brummel, F. Faisal, T. Bauer, et al. Ionic Liquid-Modified Electrocatalysts: The Interaction of C(1)C(2)Im OTf with Pt(111) and its Influence on Methanol Oxidation Studied by Electrothemical IR Spectroscopy[J]. Electrochimica Acta, 2016, 188: 825-836.

[11]. F. A. Hanc-Scherer, M. A. Montiel, V. Montiel, et al. Surface structured platinum electrodes for the electrochemical reduction of carbon dioxide in imidazolium based ionic liquids[J]. Physical Chemistry Chemical Physics, 2015, 17(37): 23909-23916.

[12]. Wang W, Royce W. Murray. Electrochemistry and contact angles of an ionic liquid sessile droplet on films of monolayer-protected au nanoparticles[J]. Analytical Chemistry, 2007, 79(3): 1213-1220.

[13]. Yang Y Y, Zhang L N, Masatoshi Osawa, et al. Surface-Enhanced Infrared Spectroscopic Study of a CO-Covered Pt Electrode in Room-Temperature Ionic Liquid[J]. Journal Of Physical Chemistry Letters, 2013, 4(10): 1582-1586.

[14]. Xie X F(谢旭芬 ), Liang J H(梁景洪),Li J J(李纪军), et al. Underpotential Deposition of Germanium on Au(111) and Pt(111) Surfaces in Ionic Liquids [J]. Journal of Electrochemistry(电化学), 2014, 20(1):16.

[15]. A. M. Navarro-Suarez, J. C. Hidalgo-Acosta, L. Fadini, et al. Electrochemical Oxidation of Hydrogen on Basal Plane Platinum Electrodes in Imidazoliurn Ionic Liquids[J]. Journal Of Physical Chemistry C, 2011, 115(22): 11147-11155.

[16]. A. P. Sandoval, M. F. Suarez-Herrera,J. M. Feliu. Hydrogen redox reactions in 1-ethyl-2,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide on platinum single crystal electrodes[J]. Electrochemistry Communications, 2014, 46: 84-86.

[17]. E. E. Switzer, R. Zeller, Q. Chen, et al. Oxygen Reduction Reaction in Ionic Liquids: The Addition of Protic Species[J]. Journal Of Physical Chemistry C, 2013, 117(17): 8683-8690.

[18]. A. P. Sandoval, M. F. Suarez-Herrera,J. M. Feliu. IR and electrochemical synthesis and characterization of thin films of PEDOT grown on platinum single crystal electrodes in EMMIM Tf2N ionic liquid[J]. Beilstein Journal Of Organic Chemistry, 2015, 11: 348-357.

[19]. A. P. Sandoval, J. M. Feliu, R. M. Torresi, et al. Electrochemical properties of poly(3,4-ethylenedioxythiophene) grown on Pt(111) in imidazolium ionic liquids[J]. Rsc Advances, 2014, 4(7): 3383-3391.

[20]. Zhang X, Zhong Y X, Yan J W, et al. Probing double layer structures of Au (111)-BMIPF6 ionic liquid interfaces from potential-dependent AFM force curves[J]. Chemical Communications, 2012, 48(4): 582-584.

[21]. Zhong Y X, Yan J W, Li M G, et al. Resolving Fine Structures of the Electric Double Layer of Electrochemical Interfaces in Ionic Liquids with an AFM Tip Modification Strategy[J]. Journal Of the American Chemical Society, 2014, 136(42): 14682-14685.

[22]. Celine Cannes, Hubert Cachet, Catherine Debiemme-Chouvy, et al. Double Layer at BuMeIm Tf2N Ionic Liquid-Pt or -C Material Interfaces[J]. Journal Of Physical Chemistry C, 2013, 117(44): 22915-22925.

[23]. Marcel Drueschler, Benedikt Huber, Stefano Passerini, et al. Hysteresis Effects in the Potential-Dependent Double Layer Capacitance of Room Temperature Ionic Liquids at a Polycrystalline Platinum Interface[J]. Journal Of Physical Chemistry C, 2010, 114(8): 3614-3617.

[24]. Shimpei Makino, Yuki Kitazumi, Naoya Nishi, et al. Charging current probing of the slow relaxation of the ionic liquid double layer at the Pt electrode[J]. Electrochemistry Communications, 2011, 13(12): 1365-1368.

[25]. Zhou W, Soya Inoue, Takashi Iwahashi, et al. Double layer structure and adsorption/desorption hysteresis of neat ionic liquid on Pt electrode surface - an in-situ IR-visible sum-frequency generation spectroscopic study[J]. Electrochemistry Communications, 2010, 12(5): 672-675.

[26]. Paula Sebastian, Andrea P. Sandoval, Victor Climent, et al. Study of the interface Pt(111)/ Emmim NTf2 using laser-induced temperature jump experiments[J]. Electrochemistry Communications, 2015, 55: 39-42.

[27]. Zhang X(张笑), Zhong Y X(钟赟鑫),Yan J W(颜佳伟), et al. In -situ AFM force curve investigations on layered structures of Au(111)-ionic liquid interfaces and temperature dependence[J]. Journal of Electrochemistry(电化学), 2014, 20(4):295-301.

[28]. Hu X Y, Chen C L, Tang S, et al. An in situ STM investigation of EMITFSI ionic liquid on Au(111) in the presence of lithium salt[J]. Science Bulletin, 2015, 60(9): 877-883.

[29]. Hu X Y, Chen C L, Yan J W, et al. Electrochemical and in-situ scanning tunneling microscopy studies of bis(fluorosulfonyl)imide and bis(trifluoromethanesulfonyl)imide based ionic liquids on graphite and gold electrodes and lithium salt influence[J]. Journal of Power Sources, 2015, 293: 187-195.

[30]. M. Gnahm, T. Pajkossy,D. M. Kolb. The interface between Au(111) and an ionic liquid[J]. Electrochimica Acta, 2010, 55(21): 6212-6217.

Pt(100)/离子液体OMIPF₆界面结构的STM研究

An STM study on the Structure of Pt(100)/Ionic Liquid OMIPF₆ Interface

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

[1]	王越, 张立敏, 田阳. 基于电化学分子探针合理设计的高选择性长程活体分析[J]. 电化学（中英文）, 2022, 28(3): 2108451-.
[2]	叶珍珍, 张抒婷, 陈鑫祺, 王瑾, 金鹰, 崔超婕, 张磊, 钱陆明, 张刚, 骞伟中. 基于离子液体的超级电容在3 V及65 ^oC老化条件下的铝碳界面效应[J]. 电化学（中英文）, 2022, 28(12): 2219005-.
[3]	李丹丹, 纪翔宇, 陈明, 杨燕茹, 王晓东, 冯光. 低聚离子液体的体相与界面及其电化学储能应用[J]. 电化学（中英文）, 2022, 28(11): 2219002-.
[4]	潘晓娜, 刘丽来, 王治璞, 王丹, 李云, 杨培霞, 张锦秋, 安茂忠. 离子液体凝胶聚合物电解质的三元组分相互作用研究[J]. 电化学（中英文）, 2020, 26(3): 406-412.
[5]	张韩方, 魏风, 孙健, 荆梦莹, 何孝军. 离子液体辅助条件下由稻壳合成超级电容器用多孔炭[J]. 电化学（中英文）, 2019, 25(6): 764-772.
[6]	M. Rostom Ali, S Sankar Saha, Md Ziaur Rahman. 共晶基离子液体的钴电化学沉积[J]. 电化学（中英文）, 2018, 24(5): 546-554.
[7]	陈莉, 刘帅, 李棉刚, 苏建加, 颜佳伟, 毛秉伟. Au(111)/咪唑基离子液体界面结构研究：阳离子侧链长度的影响[J]. 电化学（中英文）, 2018, 24(5): 511-516.
[8]	于金芝，连叶，张锦秋，杨培霞，安茂忠. 激光刻蚀模板中电沉积特殊结构CIGS薄膜[J]. 电化学（中英文）, 2018, 24(1): 4-12.
[9]	张秋红，申保收，左宋林，卫歆雨. 离子液体电解质种类对活性炭电极超级电容器电化学性能的影响[J]. 电化学（中英文）, 2017, 23(6): 684-693.
[10]	林鑫，孙草草，刘峙嵘，曾程初. 离子液体负载的TEMPO/离子液体聚合物/碳黑三元复合材料在醇的电化学氧化中的应用[J]. 电化学（中英文）, 2017, 23(3): 322-326.
[11]	程琥, 聂晓燕, 申叶丹, . 哌啶型离子液体混合电解液在Li/LiCoO₂电池中的性能研究[J]. 电化学（中英文）, 2017, 23(1): 59-63.
[12]	陈姿颖，武倩倩，张健青，朱英红，马淳安. 负载型离子液体在C-H键电氧化活化中的应用研究[J]. 电化学（中英文）, 2017, 23(1): 1-6.
[13]	徐敏敏，梅金华，姚建林，顾仁敖. [BMIm]BF₄/Pt电极界面激光诱导电沉积Cu基材料研究[J]. 电化学（中英文）, 2016, 22(6): 577-581.
[14]	M. RostomAli*, Andrew P. Abbott, Karl S. Ryder. 采用AlCl₃-Emic-MgCl₂室温离子液体电沉积制备铝-镁合金[J]. 电化学（中英文）, 2015, 21(2): 172-180.
[15]	陈琼，朱英红，朱颖，李艳芳，马淳安*. 咪唑型离子液体对4–甲氧基甲苯的电氧化性能研究[J]. 电化学（中英文）, 2014, 20(5): 465-469.