Impermeability of graphene and its applications

被引：605

作者：

Berry, Vikas ^{[1
]}

机构：

[1] Kansas State Univ, Dept Chem Engn, Manhattan, KS 66506 USA

来源：

CARBON | 2013年 / 62卷

基金：

美国国家科学基金会;

关键词：

CARBON NANOTUBE MEMBRANES; POROUS GRAPHENE; WATER TRANSPORT; GAS; SEPARATION; MOLECULES; MODEL;

D O I：

10.1016/j.carbon.2013.05.052

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：

This review discusses the genesis of impermeability in graphene and its extraordinary applications in fluid-encasement for wet electron-microscopy, selective gas-permeation, nanopore-bio-diffusion, and barrier coating against rusting and environmental hazards. As the thinnest material, graphene is composed of sp(2) hybridized carbon atoms linked to one another in a 2D honeycomb lattice with high electron-density in its aromatic rings, which blocks-off all molecules. This phenomena, in combination with its strong structure (C-C bond energy = 4.9 eV and intrinsic strength = 43 N/m) makes graphene the most impermeable membrane (thinnest membrane that is impermeable). Apart from the applications mentioned above, graphene coatings have enabled fundamental studies on chemical processes and fluid structures. For example, graphene can allow electron imaging of nanocrystal nucleation process and water-lattice-structure due to its impermeability. Along with being the strongest, most conductive, and optically-absorbing material (similar to 2.3% optical absorbance), graphene's impermeability opens a wide range of exciting opportunities. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1 / 10

页数：10

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