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

Yujia Li, Haiou Liu, Huanting Wang, Jieshan Qiu, Xiongfu Zhang

Research output: Contribution to journalArticleResearchpeer-review

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.

Original languageEnglish
Pages (from-to)4132-4141
Number of pages10
JournalChemical Science
Volume9
Issue number17
DOIs
Publication statusPublished - 2018

Cite this

Li, Yujia ; Liu, Haiou ; Wang, Huanting ; Qiu, Jieshan ; Zhang, Xiongfu. / GO-guided direct growth of highly oriented metal-organic framework nanosheet membranes for H2/CO2 separation. In: Chemical Science. 2018 ; Vol. 9, No. 17. pp. 4132-4141.
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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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GO-guided direct growth of highly oriented metal-organic framework nanosheet membranes for H2/CO2 separation. / Li, Yujia; Liu, Haiou; Wang, Huanting; Qiu, Jieshan; Zhang, Xiongfu.

In: Chemical Science, Vol. 9, No. 17, 2018, p. 4132-4141.

Research output: Contribution to journalArticleResearchpeer-review

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