• 文献标题:   Adsorption properties of amino acid-based ionic liquids (AAILs) on edge fluorinated graphene surface - a DFT study
  • 文献类型:   Article
  • 作  者:   SHYAMA M, LAKSHMIPATHI S
  • 作者关键词:   dft, ionic liquid, graphene, fluorine
  • 出版物名称:   MOLECULAR SIMULATION
  • ISSN:   0892-7022 EI 1029-0435
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1080/08927022.2021.1948544 EA JUL 2021
  • 出版年:   2021

▎ 摘  要

We have investigated the adsorption properties of amino acid-based ionic liquids (AAILs) on edge fluorinated graphene surface (FG). Adsorption of organic ILs on the FG surface occurs via hydrogen bonds (X-H center dot center dot center dot FC), electrostatic interactions, and pi center dot center dot center dot pi interactions. There are large charge transfers between the interfaces, primarily from the lone pair of the fluorine (C-F bond) to the X-H (X = C, N, O) bond of both cations/anions AAILs. These non-conventional reversible hydrogen bridges are essential in surface interactions. However, substantial charge transfer occurs to cations and anions in both aromatic and aliphatic systems, respectively. Interestingly, aromatic AAILs are firmly physisorbed than aliphatic ILs. The inclusion of dispersion corrections increases the accuracy of total binding energy contributions from multiple adsorption interactions and predicts the complex's kinetic stability. Molar volume values determine the materiality of AAIL/FG to bulk systems.