• 文献标题:   Tunable water desalination across graphene oxide framework membranes
  • 文献类型:   Article
  • 作  者:   NICOLAI A, SUMPTER BG, MEUNIERA V
  • 作者关键词:  
  • 出版物名称:   PHYSICAL CHEMISTRY CHEMICAL PHYSICS
  • ISSN:   1463-9076 EI 1463-9084
  • 通讯作者地址:   Rensselaer Polytech Inst
  • 被引频次:   105
  • DOI:   10.1039/c4cp01051e
  • 出版年:   2014

▎ 摘  要

The performance of graphene oxide framework (GOF) membranes for water desalination is assessed using classical molecular dynamics (MD) simulations. The coupling between water permeability and salt rejection of GOF membranes is studied as a function of linker concentration n, thickness h and applied pressure Delta P. The simulations reveal that water permeability in GOF-(n,h) membranes can be tuned from similar to 5 (n = 32 and h = 6.5 nm) to 400 L cm(-2) day(-1) MPa-1 (n = 64 and h = 2.5 nm) and follows a C(n)h(-alpha n) an law. For a given pore size (n = 16 or 32), water permeability of GOF membranes increases when the pore spacing decreases, whereas for a given pore spacing (n = 32 or 64), water permeability increases by up to two orders of magnitude when the pore size increases. Furthermore, for linker concentrations n