Fig. 2: Characterization of COF-OEt and NT-OEt materials.
From: Microporous organic nanotube assisted design of high performance nanofiltration membranes

a Illustration of the condensation reaction used to produce the materials. b PXRD patterns, c XPS spectra, and d FTIR spectra of COF-OEt and NT-OEt. e N2 adsorption-desorption isotherm (77 K); inset figure is the PSD profile of NT-OEt. Representative TEM images of f COF-OEt and g NT-OEt. The insets show elemental analyses obtained via high-resolution transmission electron microscopy (HR-TEM) for the powders.