Guest size limitation in metal–organic framework crystal–glass composites. Issue 13 (11th March 2021)

• Record Type: Journal Article
• Authors: Ashling, Christopher W.; Macreadie, Lauren K.; Southern, Thomas J. F.; Zhang, Yiming; McHugh, Lauren N.; Evans, Rachel C.; Kaskel, Stefan; Telfer, Shane G.; Bennett, Thomas D.
• Is Part Of: Journal of materials chemistry. Volume 9:Issue 13(2021)
• Page Start: 8386
• Page End: 8393
• Publication Date: 2021-03-11
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d0ta11229a
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : MOF crystal-glass composites (MOF CGCs) are materials with crystalline MOFs embedded within a MOF glass. Here we develop two novel MOF CGCs, and explore the gas uptake and guest-size limitations within these materials. Abstract : Metal–organic framework crystal–glass composites (MOF CGCs) have previously been formed by embedding crystalline MIL-53(Al) within a ZIF-62 glass ( a g ZIF-62) matrix. Here we highlight thermal stability considerations in the formation of MOF CGCs, and subsequently report the synthesis of two novel MOF CGCs, by incorporating MIL-118 and UL-MOF-1 within a g ZIF-62. These new materials, alongside the prototypical MOF CGC, formed using MIL-53(Al), were studied using scanning electron microscopy, powder X-ray diffraction, and gas sorption techniques. The gas uptake in composites formed from MIL-118C and UL-MOF-1 is largely dominated by the a g ZIF-62 matrix, suggesting that to improve the porosity of the MOF CGC, the matrix porosity must be improved, or a percolation threshold must be overcome.