American Chemical Society
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Pressure-Assisted Synthesis of HKUST‑1 Thin Film on Polymer Hollow Fiber at Room Temperature toward Gas Separation

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journal contribution
posted on 2014-03-26, 00:00 authored by Yiyin Mao, Junwei Li, Wei Cao, Yulong Ying, Luwei Sun, Xinsheng Peng
The scalable fabrication of continuous and defect-free metal-organic framework (MOF) films on the surface of polymeric hollow fibers, departing from ceramic supported or dense composite membranes, is a huge challenge. The critical way is to reduce the growth temperature of MOFs in aqueous or ethanol solvents. In the present work, a pressure-assisted room temperature growth strategy was carried out to fabricate continuous and well-intergrown HKUST-1 films on a polymer hollow fiber by using solid copper hydroxide nanostrands as the copper source within 40 min. These HKUST-1 films/polyvinylidenefluoride (PVDF) hollow fiber composite membranes exhibit good separation performance for binary gases with selectivity 116% higher than Knudsen values via both inside-out and outside-in modes. This provides a new way to enable for scale-up preparation of HKUST-1/polymer hollow fiber membranes, due to its superior economic and ecological advantages.