A post-synthetic approach triggers selective and reversible sulphur dioxide adsorption on a metal–organic framework

Abstract

We report the application of a post-synthetic solid-state cation-exchange process to afford a novel 3D MOF with hydrated barium cations hosted at pores able to trigger selective and reversible SO₂ adsorption. Computational modelling supports the full reversibility of the adsorption process on the basis of weak supramolecular interactions between SO₂ and coordinated water molecules.