Engineering Leaf-Like UiO-66-SO3H Membranes for Selective Transport of Cations

• DOI: 10.1007/s40820-020-0386-6
• Publication Date: 2020-02-17T03:02:20Z
• Authors: Tingting Xu; Muhammad Aamir Sh...; Xin Wang; Bin Wu; Liang Ge; Tongwen Xu
• Keywords: Nanomaterials

Abstract Metal–organic frameworks (MOFs) with angstrom-sized pores are promising functional nanomaterials for the fabrication of cation permselective membranes (MOF-CPMs). However, only a few research reports show successful preparation MOF-CPMs good separation performance due to several inherent problems in MOFs, such as arduous self-assembly, poor water resistance, and tedious strategies. Besides, low permeation flux absence assisting functionalities MOFs is another big issue, which limits their widespread use membrane technology. Therefore, it necessary fabricate using simplistic strategies improve permeation. In this context, we report facile situ smart growth strategy successfully produce ultrathin (< 600 nm) leaf-like UiO-66-SO 3 H at surface anodic alumina oxide. The physicochemical characterizations confirm that sulfonated ion transport channels exist as-prepared membranes, accelerate (~ 3× faster than non-functionalized UiO-66 membrane) achieve high selectivity (Na + /Mg 2+ > 140). outstanding validates importance introducing sulfonic acid groups MOF-CPMs.