Fig. 2
From: Fast and selective fluoride ion conduction in sub-1-nanometer metal-organic framework channels
Fabrication and characterization of PET-UiO-66-X nanochannels. a Schematic of a single bullet-shaped nanochannel and SEM images of the channel tip, cross section (the scale bar is 500 nm) and base. Average tip diameter is 36.3 ± 5.6 nm, while average base diameter is 328.3 ± 35.2 nm. The PET nanochannel surface possesses BDC linkers for in-situ growth of UiO-66-X MOFs. b Schematic of a PET-UiO-66-X nanochannel and SEM images of the nanochannel tip, cross section (the scale bar is 500 nm) and base (SEM images of PET-UiO-66-NH2 are shown as an example). Schematic of UiO-66-X crystal structure along the PET-nanochannel surface. c N2 adsorption/desorption isotherms of UiO-66, UiO-66-NH2, and UiO-66-N+(CH3)3. d Pore size distributions of UiO-66-X MOFs. The distributions for UiO-66-NH2 and UiO-66-N+(CH3)3 are displayed vertically for ease of viewing. Pore size decreases as MOFs functional group size increases
