fig6

Figure 6. (A) Schematic representation of the construction and the pore structure of ZU-16 (TIFSIX-3) materials with pyrazine linker; (B) CO₂ adsorption isotherms on various anion-functionalized ultramicroporous materials at 298 K; (C and D) CO₂/N₂ (1/99, flow rate: 5 mL min^-1) and CO₂/CH₄ (50/50, flow rate: 4 mL min^-1) conducted on ZU-16-Co. Reproduced with permission from Zhang et al.^[105]. Copyright 2021 Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.