Sulfonated Sub-1-nm Metal–Organic Framework Channels with Ultrahigh Proton Selectivity
Xingya Li, Huacheng Zhang, Jue Hou, Ranwen Ou, Yinlong Zhu, Chen Zhao, Tianyue Qian, Christopher D. Easton, Cordelia Selomulya, Matthew R. Hill, Huanting Wang
Abstract
of ∼70, which are ∼3 times of that of UiO-66-NH-SAG channels, and ∼15 times of that of UiO-66@SAG channels. The ultrahigh proton selectivity in the sulfonated sub-1-nm MOF channels is mainly attributed to the narrow window-cavity pore structure functionalized with nanoconfined high-density sulfonic acid groups that facilitate fast proton transport and simultaneously exclude other cations. Our work opens an avenue to develop functional MOF channels for selective ion conduction and efficient ion separation.
Topics & Concepts
ChemistrySelectivityProtonSulfonic acidIonOrganic chemistryPhysicsQuantum mechanicsCatalysisFuel Cells and Related MaterialsAdvanced battery technologies researchMetal-Organic Frameworks: Synthesis and Applications