Journal article

Effective Gas Separation Performance Enhancement Obtained by Constructing Polymorphous Core-Shell Metal-Organic Frameworks

Yingdian He, Mingzhe Sun, Qinghu Zhao, Jin Shang, Yuanmeng Tian, Penny Xiao, Qinfen Gu, Liangchun Li, Paul A Webley

ACS Applied Materials & Interfaces | American Chemical Society | Published : 2019

Abstract

We reported a new polymorphous core–shell metal–organic framework (MOF) in the form of a three-dimensional MOF core wrapped in a two-dimensional layered MOF shell by applying a general acid–solvent synergy synthesis. This hybrid material can achieve high adsorptive selectivity/capacity simultaneously, which is validated by the unary isotherms of CO2 and N2 conducted at 273 K (0–1 bar). The MOF-S@MOF-C with a 7-day exchange showed the highest CO2/N2 selectivity (32.7) among our samples and a moderate CO2 capacity (2.3 mmol/g), which are 3 times and 1.6 times those of the MOF-C and MOF-S, respectively. We attributed the enhanced selective adsorption performance to the negligible N2 uptake exhi..

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Grants

Awarded by National Natural Science Foundation of China


Awarded by Research Grants Council of Hong Kong


Awarded by City University of Hong Kong Start-Up grant


Awarded by Australian Research Council (ARC)


Funding Acknowledgements

J.S. gratefully acknowledges the financial support from the National Natural Science Foundation of China (21706224), the Research Grants Council of Hong Kong (CityU 21301817), and City University of Hong Kong Start-Up grant (7200524). The authors acknowledge Australian Research Council (ARC) funding (DP2013000024). SEM experiment was conducted by Dr. Ranjeet Sigh. TEM was conducted by Dr. Sergey Rubanov. Part of work was undertaken at the PD beamline, Australian Synchrotron (ANSTO).