▎ 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