Fig. 2: Characterization of MPMs.

a Illustration of fabrication process of MPMs, in which GO@UiO-66 nanosheets and PVDF binder working as the brick and mortar respectively. N2 sorption isotherm curves (b), pore size distributions (c), and XRD patterns (d) of simulated UiO-66, GO@UiO-66, and MPM fabricated based on GO@UiO-66. e SEM images of GO@UiO-66. Top (f) and cross-sectional (g, h) SEM views of a representative MPM with different magnifications. i Nano-CT reconstruction of MPM. j Cross-sectional SEM view of a representative thin MPM.