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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Yingdian He
  • Qinghu Zhao
  • Penny Xiao
  • Qinfen Gu
  • Liangchun Li
  • Paul A. Webley

Detail(s)

Original languageEnglish
Pages (from-to)30234-30239
Journal / PublicationACS applied materials & interfaces
Volume11
Issue number33
Early online date24 Jul 2019
Publication statusPublished - 11 Aug 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 exhibited by the outer shell of MOF-S@MOF-C. This study provides a new route for elevating gas separation performance by constructing multifunctional core-shell materials.

Research Area(s)

  • CO2 separation, core-shell, gas adsorption, in situ synchrotron powder X-ray diffraction, metal-organic frameworks

Citation Format(s)

Effective Gas Separation Performance Enhancement Obtained by Constructing Polymorphous Core-Shell Metal-Organic Frameworks. / He, Yingdian; Sun, Mingzhe; Zhao, Qinghu; Shang, Jin; Tian, Yuanmeng; Xiao, Penny; Gu, Qinfen; Li, Liangchun; Webley, Paul A.

In: ACS applied materials & interfaces, Vol. 11, No. 33, 11.08.2019, p. 30234-30239.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review