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. 2021 Jan 4;12:38. doi: 10.1038/s41467-020-20298-7

Fig. 1. Preparation of MOF-in-COF membrane and morphological characterization.

Fig. 1

a Scheme depicting ZIF-67-in-TpPa-1 membrane synthesis and schematic of single pore structure. Top-view (bd) and cross-sectional (eg, i) SEM images of porous α-Al2O3 substrate (b, e), supported TpPa-1 layer (c, f) and ZIF-67-in-TpPa-1 membrane (d, g, i). h Optical photograph of membranes. j EDXS mapping and elemental distributions corresponding to (i).