基于 UiO-66 衍生 MOFs 的混合基质复合膜用于 CO 分离。

Mixed-Matrix Composite Membranes Based on UiO-66-Derived MOFs for CO Separation.

机构信息

Institute for Nanoscience and Nanotechnology (INST) , Sharif University of Technology , P.O. Box 11155-8639, Tehran , Iran.

Department of Chemical and Petroleum Engineering , Sharif University of Technology , P.O. Box 11155-9465, Tehran , Iran.

出版信息

ACS Appl Mater Interfaces. 2019 Mar 6;11(9):9448-9461. doi: 10.1021/acsami.8b20869. Epub 2019 Feb 25.

DOI:10.1021/acsami.8b20869

PMID:30724557

Abstract

We demonstrated a novel mixed-matrix composite membrane (MMCM) based on acrylated polyurethane (APU) and UiO-66 nanoparticles to separate CO/N mixture. UiO-66 and functionalized UiO-66 including NH-UiO-66 and glycidyl methacrylate (GMA)-UiO-66 were loaded into APU/2-hydroxyethyl methacrylate (APUH) matrix at variable concentrations between 3 and 30 wt %. APUH/GMA-UiO-66 MMCMs exhibited strong adhesion with a support layer of polyester/polysulfone, which was not deteriorated after immersion in water for a long time (20 days). Incorporation of UiO-66 and its functionalized forms increased simultaneously permeability and CO/N selectivity, which were indeed superior in comparison with those of MMCMs reported previously. GMA-UiO-66-filled MMCM displayed a CO permeance of 14.5 Barrer and a CO/N selectivity of 53 at a critical concentration (25 wt %). This attractive separation performance of APUH/UiO-66 offered an exciting platform for the development of composite membranes for sustainable CO separations.

摘要

我们展示了一种基于丙烯酰化聚氨酯（APU）和 UiO-66 纳米粒子的新型混合基质复合膜（MMCM），用于分离 CO/N 混合物。UiO-66 和功能化的 UiO-66（包括 NH-UiO-66 和甲基丙烯酸缩水甘油酯（GMA）-UiO-66）以 3 到 30wt%之间的不同浓度负载到 APU/2-羟乙基甲基丙烯酸酯（APUH）基质中。APUH/GMA-UiO-66 MMCM 与聚酯/聚砜支撑层具有很强的附着力，在长时间（20 天）浸泡在水中后不会恶化。UiO-66 及其功能化形式的掺入同时提高了渗透性和 CO/N 选择性，与以前报道的 MMCM 相比，这确实具有优越性。在临界浓度（25wt%）下，GMA-UiO-66 填充的 MMCM 的 CO 渗透系数为 14.5 Barrer，CO/N 选择性为 53。APUH/UiO-66 的这种有吸引力的分离性能为可持续 CO 分离的复合膜的开发提供了一个令人兴奋的平台。