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Lin R, Ge L, Liu S, et al. Mixed-Matrix Membranes with Metal-Organic Framework-Decorated CNT Fillers for Efficient CO2 Separation. ACS Appl Mater Interfaces. 2015;7(27):14750-7doi: 10.1021/acsami.5b02680.
Lin, R., Ge, L., Liu, S., Rudolph, V., & Zhu, Z. (2015). Mixed-Matrix Membranes with Metal-Organic Framework-Decorated CNT Fillers for Efficient CO2 Separation. ACS applied materials & interfaces, 7(27), 14750-7. https://doi.org/10.1021/acsami.5b02680
Lin, Rijia, et al. "Mixed-Matrix Membranes with Metal-Organic Framework-Decorated CNT Fillers for Efficient CO2 Separation." ACS applied materials & interfaces vol. 7,27 (2015): 14750-7. doi: https://doi.org/10.1021/acsami.5b02680
Lin R, Ge L, Liu S, Rudolph V, Zhu Z. Mixed-Matrix Membranes with Metal-Organic Framework-Decorated CNT Fillers for Efficient CO2 Separation. ACS Appl Mater Interfaces. 2015 Jul 15;7(27):14750-7. doi: 10.1021/acsami.5b02680. Epub 2015 Jul 01. PMID: 26090690.
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ACS Appl Mater Interfaces. 2015 Jul 15;7(27):14750-7. doi: 10.1021/acsami.5b02680. Epub 2015 Jul 01.

Mixed-Matrix Membranes with Metal-Organic Framework-Decorated CNT Fillers for Efficient CO2 Separation.

ACS applied materials & interfaces

Rijia Lin, Lei Ge, Shaomin Liu, Victor Rudolph, Zhonghua Zhu

Affiliations

  1. †School of Chemical Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia.
  2. ‡School of Chemical Engineering, Curtin University of Technology, Perth, Western Australia 6102, Australia.

PMID: 26090690 DOI: 10.1021/acsami.5b02680

Abstract

Carbon nanotube (CNT) mixed-matrix membranes (MMMs) show great potential to achieve superior gas permeance because of the unique structure of CNTs. However, the challenges of CNT dispersion in polymer matrix and elimination of interfacial defects are still hindering MMMs to be prepared for high gas selectivity. A novel CNT/metal-organic framework (MOF) composite derived from the growth of NH2-MIL-101(Al) on the surface of CNTs have been synthesized and applied to fabricate polyimide-based MMMs. Extra amino groups and active sites were introduced to external surface of CNTs after MOF decoration. The good adhesion between the synthesized CNT-MIL fillers and polymer phase was observed, even at a high filler loadings up to 15%. Consequently, MMMs containing the synthesized MOF/CNT composite exhibit not only a large CO2 permeability but also a high CO2/CH4 selectivity; the combined performance of permeability and selectivity is even above the Robeson upper bound. The strategy of growing MOFs on CNTs can be further utilized to develop a more effective approach to further improve MMM performance through the decoration of MOFs on existing fillers that have high selectivity to specific gas.

Keywords: carbon nanotubes; high-performance separation; metal−organic frameworks; mixed-matrix membranes; surface decoration

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