An in Situ STM and DTS Study of the Extremely Pure [EMIM]FAP/Au(111) Interface

被引：22
作者：
Borisenko, Natalia [1 ,2 ]
El Abedin, Sherif Zein [1 ,2 ,3 ]
Endres, Frank [1 ,2 ]
机构：
[1] Clausthal Univ Technol, Inst Particle Technol, D-38678 Clausthal Zellerfeld, Germany
[2] EFZN Goslar, D-38640 Goslar, Germany
[3] Natl Res Ctr, Electrochem & Corros Lab, Cairo, Egypt
来源：
CHEMPHYSCHEM | 2012年 / 13卷 / 07期
关键词：
cyclic voltammetry; interfaces; ionic liquids; scanning tunneling microscopy; surface analysis; ELECTRICAL DOUBLE-LAYER; STABLE IONIC LIQUIDS; ELECTRODEPOSITION; CAPACITANCE; AIR; TEMPERATURE; MICROSCOPY; ALUMINUM; AU(111); SURFACE;
D O I：
10.1002/cphc.201100873
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Herein the structure of the interfacial layer between the air- and water-stable ionic liquid 1-ethyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([EMIM]FAP) and Au(111) is investigated using in situ scanning tunneling microscopy (STM), distance tunneling spectroscopy (DTS) and cyclic voltammetry (CV) measurements. The in situ STM measurements reveal that structured interfacial layers can be probed in both cathodic and anodic regimes at the IL/Au(111) interface. The structure of these layers is dependent on the applied electrode potential, the number of subsequent STM scans and the scan rate. Furthermore, first DTS results show that the tunneling barrier during the 1st STM scan does not seem to change significantly in the cathodic potential regime between the ocp (-0.2 V) and -2.0 V.
引用
收藏
页码：1736 / 1742
页数：7
相关论文
共 33 条
[1]   Structure in confined room-temperature ionic liquids [J].
Atkin, Rob ;
Warr, Gregory G. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (13) :5162-5168
[2]   An in situ STM/AFM and impedance spectroscopy study of the extremely pure 1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl) trifluorophosphate/Au(111) interface: potential dependent solvation layers and the herringbone reconstruction [J].
Atkin, Rob ;
Borisenko, Natalia ;
Drueschler, Marcel ;
El Abedin, Sherif Zein ;
Endres, Frank ;
Hayes, Robert ;
Huber, Benedikt ;
Roling, Bernhard .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2011, 13 (15) :6849-6857
[3]   AFM and STM Studies on the Surface Interaction of [BMP]TFSA and (EMIm]TFSA Ionic Liquids with Au(111) [J].
Atkin, Rob ;
El Abedin, Sherif Zein ;
Hayes, Robert ;
Gasparotto, Luiz H. S. ;
Borisenko, Natalia ;
Endres, Frank .
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (30) :13266-13272
[4]   Double Layer in Ionic Liquids: Overscreening versus Crowding [J].
Bazant, Martin Z. ;
Storey, Brian D. ;
Kornyshev, Alexei A. .
PHYSICAL REVIEW LETTERS, 2011, 106 (04)
[5]  
Bonnell D., 2001, SCANNING PROBE MICRO, P76
[6]   A Contribution to the Theory of Electrocapillarity [J].
Chapman, David Leonard .
PHILOSOPHICAL MAGAZINE, 1913, 25 (148) :475-481
[7]   Purification or contamination? The effect of sorbents on ionic liquids [J].
Clare, Bronya R. ;
Bayley, Paul M. ;
Best, Adam S. ;
Forsyth, Maria ;
MacFarlane, Douglas R. .
CHEMICAL COMMUNICATIONS, 2008, (23) :2689-2691
[8]   An Experimental and Theoretical Study of the Aluminium Species Present in Mixtures of AlCl3 with the Ionic Liquids [BMP]Tf2N and [EMIm]Tf2N [J].
Eiden, Philipp ;
Liu, Qunxian ;
El Abedin, Sherif Zein ;
Endres, Frank ;
Krossing, Ingo .
CHEMISTRY-A EUROPEAN JOURNAL, 2009, 15 (14) :3426-3434
[9]   THE THERMODYNAMICS OF ELECTROLYTES AT HIGHER CONCENTRATION [J].
EIGEN, M ;
WICKE, E .
JOURNAL OF PHYSICAL CHEMISTRY, 1954, 58 (09) :702-714
[10]   Electrodeposition of nano- and microcrystalline aluminium in three different air and water stable ionic liquids [J].
El Abedin, S. Zein ;
Moustafa, E. M. ;
Hempelmann, R. ;
Natter, H. ;
Endres, F. .
CHEMPHYSCHEM, 2006, 7 (07) :1535-1543
1234