Fig. 4: MOF-in-COF membrane morphology and gas-permeation performance.
From: MOF-in-COF molecular sieving membrane for selective hydrogen separation
Schematic showing the pore structure (a, e), top-view (b, f) and cross-sectional (c, g) SEM images of ZIF-8-in-TpPa-1 membrane (a–c) and ZIF-67-in-TpBD membrane (e–g). d, h EDXS mappings and elemental distributions corresponding to (c, g). C Kα1_2 signal, red; Al Kα1 signal, purple; Zn Kα1 and Co Kα1 signals, green. H2 permeances and separation factors of (i) ZIF-8-in-TpPa-1 membrane and (j) ZIF-67-in-TpBD for equimolar binary gases. All measurements at 298 K and 1 bar.
