Highly efficient sorption and luminescence sensing of oxoanionic species by 8-connected alkyl-amino functionalized Zr MOFs.

In the present study we provide the sorption properties of four 8-connected Zr MOFs with the general formula H[ZrO(RNH-BDC)]·solvent (RNH-BDC = 2-alkyl-amine-terephthalate; R = ethyl-, ; R = propyl-, ; R = isobutyl-, ; R = -butyl, ) towards toxic Cr(VI) and radionuclide-related ReO oxoanions. These MOFs represent superior sorbents for the removal of oxoanionic species, in terms of kinetics, sorption isotherms, selectivity and regeneration/reusability. The excellent sorption capability of the MOFs is due to a combination of surface and intra-framework sorption phenomena.