Anion Enhancement at the Liquid Vacuum Interface of an Ionic Liquid Mixture

被引：22
|
作者：
Zhang, Yong [1 ]
Khalifa, Yehia [2 ]
Maginn, Edward J. [1 ]
Newberg, John T. [2 ]
机构：
[1] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA
[2] Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2018年 / 122卷 / 48期
关键词：
RAY PHOTOELECTRON-SPECTROSCOPY; ELECTRONIC ENVIRONMENT; MOLECULAR-DYNAMICS; SURFACE-COMPOSITION; INITIAL CONFIGURATIONS; BINARY-MIXTURES; ATOMIC CHARGES; WATER; SUBSTITUENTS; SIMULATIONS;
D O I：
10.1021/acs.jpcc.8b07995
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：
The liquid vacuum interface was investigated for a ionic liquid (IL) mixture containing 1-ethyl-3-methylimidazolium acetate, [C2MIM] [OAc], and 1ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, [C2MIM] [TFSI]. Herein, we detail a quantitative connection between molecular simulations and angle-resolved X-ray photoemission spectroscopy for an IL vacuum interface. Results show that for a mixture with a low concentration of [TFSI](-), the anion [OAc](-) is slightly depleted from the interface, whereas the [TFSI](-) anion is significantly enhanced relative to the bulk. Both experiments and simulations reveal that the mole fraction of [TFSI](-) increases significantly from the bulk value in the top 17 angstrom. Furthermore, simulations show that [TFSI](-) has a preferred orientation at the liquid-vacuum interface.
引用
收藏
页码：27392 / 27401
页数：10
相关论文
共 50 条
  • [1] Ionic Liquid Mixture at the Vacuum Interface and the Peaks and Antipeaks Analysis of X-ray Reflectivity
    Wu, Fei
    Karunaratne, Waruni V.
    Margulis, Claudio J.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2019, 123 (08): : 4914 - 4925
  • [2] Ionic Liquid Anion Controlled Nanoscale Gold Morphology Grown at a Liquid Interface
    Bhawawet, Nakara
    Essner, Jeremy B.
    Wage, Durgesh V.
    Baker, Gary A.
    LANGMUIR, 2017, 33 (24) : 6029 - 6037
  • [3] Determining the composition of the vacuum-liquid interface in ionic-liquid mixtures
    Smoll, E. J., Jr.
    Tesa-Serrate, M. A.
    Purcell, S. M.
    D'Andrea, L.
    Bruce, D. W.
    Slattery, J. M.
    Costen, M. L.
    Minton, T. K.
    McKendrick, K. G.
    FARADAY DISCUSSIONS, 2018, 206 : 497 - 522
  • [4] Anion Exchange at the Liquid/Solid Interface of Ultrathin Ionic Liquid Films on Ag(111)
    Lexow, Matthias
    Heller, Bettina S. J.
    Maier, Florian
    Steinrueck, Hans-Peter
    CHEMPHYSCHEM, 2018, 19 (22) : 2978 - 2984
  • [5] Anion Effects on the Solid/Ionic Liquid Interface and the Electrodeposition of Zinc
    Liu, Zhen
    Cui, Tong
    Lu, TianQi
    Ghazvini, Maryam Shapouri
    Endres, Frank
    JOURNAL OF PHYSICAL CHEMISTRY C, 2016, 120 (36): : 20224 - 20231
  • [6] Different Hydrogen Bond Changes Driven by Surface Segregation Behavior of Imidazolium-Based Ionic Liquid Mixture at the Liquid-Vacuum Interface
    Yang, Deshuai
    Huang, Yiping
    Wang, Xueping
    He, Ruiyao
    Zhou, Guobing
    Chen, Xiangshu
    Yang, Zhen
    LANGMUIR, 2020, 36 (40) : 11798 - 11808
  • [7] En route formation of ion pairs at the ionic liquid–vacuum interface
    Friedrich Malberg
    Oldamur Hollóczki
    Martin Thomas
    Barbara Kirchner
    Structural Chemistry, 2015, 26 : 1343 - 1349
  • [8] Ionic Disruption of the Liquid-Liquid Interface
    Shamay, Eric S.
    Richmond, Geraldine L.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (29): : 12590 - 12597
  • [9] Anion sensitivity of monoglycerides at the liquid-liquid interface
    Muzzio, Michelle
    Tisor, Omoakhe
    Lopez, David
    Lee, Sunghee
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2013, 246
  • [10] Interfacial nanostructure and friction of a polymeric ionic liquid-ionic liquid mixture as a function of potential at Au(111) electrode interface
    Li, Hua
    Zhang, Yunxiao
    Jones, Seamus
    Segalman, Rachel
    Warr, Gregory G.
    Atkin, Rob
    JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2022, 606 : 1170 - 1178
12345