Journal article

Oriented two-dimensional zeolitic imidazolate framework-L membranes and their gas permeation properties

Zhaoxiang Zhong, Jianfeng Yao, Rizhi Chen, Zexian Low, Ming He, Jefferson Zhe Liu, Huanting Wang

Journal of Materials Chemistry A | ROYAL SOC CHEMISTRY | Published : 2015

Abstract

A two-dimensional zeolitic imidazolate framework (ZIF), ZIF-L, with a unique anisotropic pore system makes it an excellent material for investigating ZIF membranes with crystallographically preferred orientation and their effects on gas separation properties. A b-oriented ZIF-L membrane was successfully prepared from a randomly oriented seed layer. In contrast, a c-oriented ZIF-L crystal layer was attached to a support through vacuum filtration in the presence of polyethyleneimine. After a short-time secondary growth, the oriented layer grew into a continuous membrane with a high degree of c-out-of-plane orientation. Gas separation studies demonstrated the orientation-dependent separation be..

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University of Melbourne Researchers

Grants

Awarded by National Natural Science Foundation of China


Funding Acknowledgements

This work is in part supported by the Australian Research Council (ARC). H. W. thanks ARC for a Future Fellowship. Z. Z. acknowledges the support from the National Natural Science Foundation of China (no. 21276124), and thanks the Monash University for hosting his visiting research.