RESUMO
Developing a facile strategy for constructing oriented mixed matrix membranes (MMMs) with uniformly dispersed and high-loading metal-organic frameworks (MOFs) is a crucial scientific challenge in probing the enhanced capability and potential applications of MOF-polymer MMMs. Herein, a novel synchronous synthetic method for constructing oriented CuBDC/poly(m-phenylenediamine) (CuBDC/PmPD) MMM with uniform MOF dispersion at high loading at the air-solution interface via the dual function of metal ions is reported. The resulting MMM exhibits excellent separation performance in ion sieving and seawater desalination due to the structural integrity of the proposed membrane and the highly interconnected channels created through the oriented distribution of MOF in a polymer matrix. Such a cutting-edge approach may provide promising insights into the development of advanced MMMs with optimized structure and superior performances.
RESUMO
Endowed with rich structural diversity and tunable functionalities, metal-organic frameworks (MOFs) have become appealing candidates in diverse applications. Nonetheless, many existing MOFs possess varying degrees of chemical instability in some extreme conditions, which significantly hampers their practical applications. Herein, we successfully fabricated a series of MOFs/parylene-N hybrid materials by introducing a parylene-N layer onto the exterior surface of MOFs via the chemical vapor deposition technique. Strikingly, the shielding layer not only imparts the chemical stability of MOFs without obviously impacting their inherent nature but also makes the coated MOFs possess outstanding catalytic performance in water-mediated organic reactions. Such an integrated system might open a new window for MOFs to broaden the scope of real-world application in harsh aqueous environments.