Figure 5. (a) Gas permeation properties and
CO2/CH4 selectivities of
the
(I) pristine PSF membrane, (II) MOF-NP/PSF, (III) pMOF-MS/PSF, and (IV)
pUiO-66-MS/PSF MMMs. (b) CO2 and CH4adsorption isotherms with the corresponding fitting lines by dual
sorption model. (c) Solubility and
CO2/CH4 solubility selectivity of
different membranes. (d) Diffusivity and
CO2/CH4 diffusivity selectivity of
different membranes.