Abstract

We investigate separation of gas-mixtures using a graphene membrane. By introducing a water slab between a gas-mixture and the graphene membrane, we show that the gas-mixture can be separated based on the water-solubility of the gas molecule. By considering various gas-mixtures we show that the separation ratio follows the water-solubility ratio of the gas molecules in the mixture. We also demonstrate the water-solubility-driven separation of gas-mixtures using a carbon nanotube, but we show that the graphene membrane provides higher selectivity ratio because of its single-atom thickness.

Original languageEnglish (US)
Pages (from-to)546-553
Number of pages8
JournalJournal of Membrane Science
Volume428
DOIs
StatePublished - Feb 1 2013

Keywords

  • Gas separation
  • Graphene
  • Molecular dynamics

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Materials Science(all)
  • Biochemistry
  • Filtration and Separation

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