We confirmed that there is still a high degree of porosity by measuring nitrogen adsorption at 77 K (Supporting Information Figure ). From the nitrogen isotherm, we calculated a BET surface area of 430 m 2 /g, indicating well-maintained porosity throughout synthesis and activation, although this is lower than the Zeo++ predicted surface area of 860 m 2 /g for the pristine MOF. This lower porosity further supports the expectation of some pore occlusion.