Efficient and selective removal of Pb from aqueous solution by using an O functionalized metal-organic framework.

Lead (Pb) is one of the most widespread and highly toxic heavy metals in the environment. The design and synthesis of adsorbent materials for the selective and efficient removal of Pb from aqueous solution has received much attention. Herein, the ligand 4,4'-azoxydibenzoic acid with the O group was elaborately selected to construct a novel Pr-based MOF for Pb removal.