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Ultra-facile aqueous synthesis of nanoporous zeolitic imidazolate framework membranes for hydrogen purification and olefin/paraffin separation

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Abstract

An extremely simple one-step method was discovered to synthesize defect-free zeolitic imidazolate framework-8 (ZIF-8) films in aqueous solution by utilizing dopamine as a modulator. In situ dopamine polymerization is considered to inhibit the homogenous nucleation of ZIF-8 and slow down its heterogeneous nucleation, whilst the formed polydopamine facilitates the counter-diffusion growth of the ZIF-8 layer and patches the possible defects simultaneously. The designed ZIF-8 composite membrane exhibits exceptional separation performance with a H2/C3H8 permselectivity of 6688 and a C3H6/C3H8 permselectivity of 99, which can realize hydrogen and other energy-efficient continuous gas separation processes for sustainable clean energy.

Graphical abstract: Ultra-facile aqueous synthesis of nanoporous zeolitic imidazolate framework membranes for hydrogen purification and olefin/paraffin separation

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Publication details

The article was received on 06 Dec 2018, accepted on 25 Mar 2019 and first published on 25 Mar 2019


Article type: Communication
DOI: 10.1039/C8TA11748A
Citation: J. Mater. Chem. A, 2019, Advance Article

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    Ultra-facile aqueous synthesis of nanoporous zeolitic imidazolate framework membranes for hydrogen purification and olefin/paraffin separation

    X. Jiang, S. Li, Y. Bai and L. Shao, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C8TA11748A

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