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Metal-organic framework crystal-glass composites

DOI: 10.1038/s41467-019-10470-z DOI Help

Authors: Jingwei Hou (University of Cambridge) , Christopher W. Ashling (University of Cambridge) , Sean M. Collins (University of Cambridge) , Andraž Krajnc (National Institute of Chemistry, Slovenia) , Chao Zhou (University of Cambridge) , Louis Longley (University of Cambridge) , Duncan N. Johnstone (University of Cambridge) , Philip Chater (Diamond Light Source) , Shichun Li (University of Cambridge; China Academy of Engineering Physics) , Marie-vanessa Coulet (Aix-Marseille Univ, CNRS) , Philip L. Llewellyn (Aix-Marseille Univ, CNRS) , François-xavier Coudert (Chimie ParisTech, PSL University, CNRS) , David Keen (ISIS Facility) , Paul A. Midgley (University of Cambridge) , Gregor Mali (National Institute of Chemistry, Slovenia) , Vicki Chen (University of New South Wales; University of Queensland) , Thomas D. Bennett (University of Cambridge)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Nature Communications , VOL 10 , PAGES 2580

State: Published (Approved)
Published: June 2019
Diamond Proposal Number(s): 171151 , 19130 , 16983

Open Access Open Access

Abstract: The majority of research into metal-organic frameworks (MOFs) focuses on their crystalline nature. Recent research has revealed solid-liquid transitions within the family, which we use here to create a class of functional, stable and porous composite materials. Described herein is the design, synthesis, and characterisation of MOF crystal-glass composites, formed by dispersing crystalline MOFs within a MOF-glass matrix. The coordinative bonding and chemical structure of a MIL-53 crystalline phase are preserved within the ZIF-62 glass matrix. Whilst separated phases, the interfacial interactions between the closely contacted microdomains improve the mechanical properties of the composite glass. More significantly, the high temperature open pore phase of MIL-53, which spontaneously transforms to a narrow pore upon cooling in the presence of water, is stabilised at room temperature in the crystal-glass composite. This leads to a significant improvement of CO2 adsorption capacity.

Journal Keywords: Glasses; Metal–organic frameworks; Organic–inorganic nanostructures; Porous materials

Subject Areas: Materials

Diamond Offline Facilities: Electron Physical Sciences Imaging Centre (ePSIC)
Instruments: E02-JEM ARM 300CF , I15-1-X-ray Pair Distribution Function (XPDF)

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