Figure 3

Up: FT-IR spectra of pyridine-2,5-dicarboxylic acid (H2PDC), ZrCl4, Zr-UiO-66-PDC and [Zr-UiO-66-PDC-SO3H]Cl. Down: PXRD pattern of the [Zr-UiO-66-PDC-SO3H]Cl.

Up: FT-IR spectra of pyridine-2,5-dicarboxylic acid (H2PDC), ZrCl4, Zr-UiO-66-PDC and [Zr-UiO-66-PDC-SO3H]Cl. Down: PXRD pattern of the [Zr-UiO-66-PDC-SO3H]Cl.