首页|Fabrication of Highly Oriented Ultrathin Zirconium Metal‐Organic Framework Membrane from Nanosheets towards Unprecedented Gas Separation
Fabrication of Highly Oriented Ultrathin Zirconium Metal‐Organic Framework Membrane from Nanosheets towards Unprecedented Gas Separation
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Wiley
Abstract Concurrent regulation of crystallographic orientation and thickness of zirconium metal–organic framework (Zr‐MOF) membranes is challenging but promising for their performance enhancement. In this study, we pioneered the fabrication of uniform triangular‐shaped, 40?nm thick UiO‐66 nanosheet (NS) seeds by employing an anisotropic etching strategy. Through innovating confined counter‐diffusion‐assisted epitaxial growth, highly (111)‐oriented 165?nm‐thick UiO‐66 membrane was prepared. The significant reduction in thickness and diffusion barrier in the framework endowed the membrane with unprecedented CO2 permeance (2070 GPU) as well as high CO2/N2 selectivity (35.4), which surpassed the performance limits of state‐of‐the‐art polycrystalline MOF membranes. In addition, highly (111)‐oriented 180?nm‐thick NH2‐UiO‐66 membrane showing superb H2/CO2 separation performance with H2 permeance of 1230 GPU and H2/CO2 selectivity of 41.3, was prepared with the above synthetic procedure.
NSTL
Wiley
