GO-guided direct growth of highly oriented metal-organic framework nanosheet membranes for H2 /CO2 separation

Chemical Science
Yujia LiXiongfu Zhang

Abstract

Highly oriented, ultrathin metal-organic framework (MOF) membranes are attractive for practical separation applications, but the scalable preparation of such membranes especially on standard tubular supports remains a huge challenge. Here we report a novel bottom-up strategy for directly growing a highly oriented Zn2(bIm)4 (bIm = benzimidazole) ZIF nanosheet tubular membrane, based on graphene oxide (GO) guided self-conversion of ZnO nanoparticles (NPs). Through our approach, a thin layer of ZnO NPs confined between a substrate and a GO ultrathin layer self-converts into a highly oriented Zn2(bIm)4 nanosheet membrane. The resulting membrane with a thickness of around 200 nm demonstrates excellent H2/CO2 gas separation performance with a H2 performance of 1.4 × 10-7 mol m-2 s-1 Pa-1 and an ideal separation selectivity of about 106. The method can be easily scaled up and extended to the synthesis of other types of Zn-based MOF nanosheet membranes. Importantly, our strategy is particularly suitable for the large-scale fabrication of tubular MOF membranes that has not been possible through other methods.

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Citations

Jun 11, 2019·Chemical Society Reviews·Chao ZhangZhi-Kang Xu
Feb 6, 2020·Chemistry, an Asian Journal·Youdong ChengDan Zhao
Oct 7, 2020·Physical Chemistry Chemical Physics : PCCP·Shuyi LinYinwei Li
Aug 7, 2018·Chemical Science·Ming LiYunbin He
Jun 9, 2020·Research : a Science Partner Journal·Yujie BanWeishen Yang
May 28, 2020·Membranes·Mingyuan FangMona Semsarilar
Nov 24, 2020·Chemical Society Reviews·Haozhen DouZhongwei Chen
Dec 16, 2020·Chemical Society Reviews·Zixi KangSvetlana Mintova
Jan 23, 2021·Chemical Society Reviews·Esmail DoustkhahM Hussein N Assadi
Nov 3, 2020·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·Shreedevi Arun KumarAkhilesh K Gaharwar
Aug 10, 2021·Chemical Communications : Chem Comm·Jeong Pil KimDae Woo Kim
Dec 19, 2018·ACS Applied Materials & Interfaces·Fangfang YangHeqing Jiang

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Methods Mentioned

BETA
delamination
X-ray
transmission electron microscopy
atomic force microscopy

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