Structure of [C4mpyr][NTf2] Room-Temperature Ionic Liquid at Charged Gold Interfaces

被引：98
|
作者：
Lauw, Yansen [1 ,2 ]
Horne, Michael D. [2 ]
Rodopoulos, Theo [2 ]
Lockett, Vera [3 ]
Akgun, Bulent [4 ,5 ]
Hamilton, William A. [1 ]
Nelson, Andrew R. J. [1 ]
机构：
[1] Australian Nucl Sci & Technol Org, Kirrawee Dc, NSW 2232, Australia
[2] CSIRO Proc Sci & Engn, Clayton, Vic 3169, Australia
[3] Univ S Australia, Ian Wark Res Inst, Mawson Lakes, SA 5095, Australia
[4] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[5] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA
来源：
LANGMUIR | 2012年 / 28卷 / 19期
关键词：
ENHANCED RAMAN-SCATTERING; ELECTRICAL DOUBLE-LAYER; DIFFERENTIAL CAPACITANCE; ADSORPTION; ELECTRODEPOSITION; SPECTROSCOPY; ELECTROLYTE; ENERGY; MODEL; STM;
D O I：
10.1021/la3005757
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The structure of 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([C(4)mpyr][NTf2]) room-temperature ionic liquid at an electrified gold interface was studied using neutron reflectometry, cyclic voltammetry, and differential capacitance measurements. Subtle differences were observed between the reflectivity data collected on a gold electrode at three different applied potentials. Detailed analysis of the fitted reflectivity data reveals an excess of [C(4)mpyr] at the interface, with the amount decreasing at increasingly positive potentials. A cation rich interface was found even at a positively charged electrode, which indicates a nonelectrostatic (specific) adsorption of [C(4)mpyr] onto the gold electrode.
引用
收藏
页码：7374 / 7381
页数：8
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