A microporous cationic metal–organic framework for the efficient removal of dichromate and the selective adsorption of dyes from water

Abstract

A unique microporous cationic metal–organic framework, namely [Cd(tipo)(HCOO)(H₂O)]·NO₃·DMF (1), has been synthesized and structurally characterized [tipo = tris(4-(1H-imidazol-1-yl)phosphine oxide)]. This compound exhibits rapid and selective separation of methyl orange. Meanwhile, it has also been developed as a potential adsorbent material for the efficient removal of Cr₂O₇²⁻ from aqueous solutions with a high uptake of up to 228 mg g⁻¹.