• 文献标题:   Interfacial Liquid Water on Graphite, Graphene, and 2D Materials
  • 文献类型:   Review
  • 作  者:   GARCIA R
  • 作者关键词:   interfacial water, graphitewater interface, 2d materialswater interface, solidliquid interface, afm, threedimensional afm, airborne contaminant, wca, molecular dynamics simulation
  • 出版物名称:   ACS NANO
  • ISSN:   1936-0851 EI 1936-086X
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.1021/acsnano.2c10215 EA DEC 2022
  • 出版年:   2023

▎ 摘  要

The optical, electronic, and mechanical properties of graphite, few layer, and two-dimensional (2D) materials have prompted a considerable number of applications. Biosensing, energy storage, and water desalination illustrate applications that require a molecular-scale understanding of the interfacial water structure on 2D materials. This review introduces the most recent experimental and theoretical advances on the structure of interfacial liquid water on graphite-like and 2D materials surfaces. On pristine conditions, atomic-scale resolution experiments revealed the existence of 1-3 hydration layers. Those layers were separated by -0.3 nm. The experimental data were supported by molecular dynamics simulations. However, under standard working conditions, atomic-scale resolution experiments revealed the presence of 2-3 hydrocarbon layers. Those layers were separated by -0.5 nm. Linear alkanes were the dominant molecular specie within the hydrocarbon layers. Paradoxically, the interface of an aged 2D material surface immersed in water does not have water molecules on its vicinity. Free-energy considerations favored the replacement of water by alkanes.