| Autor: |
Ashling CW; Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K., Johnstone DN; Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K., Widmer RN; Department of Earth Sciences , University of Cambridge , Downing Street , Cambridge , CB2 3EQ U.K., Hou J; Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K., Collins SM; Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K., Sapnik AF; Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K., Bumstead AM; Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K., Midgley PA; Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K., Chater PA; Diamond Light Source Ltd. , Diamond House, Harwell Campus , Didcot , Oxfordshire OX11 0DE U.K., Keen DA; ISIS Facility , Rutherford Appleton Laboratory , Harwell Campus , Didcot , Oxfordshire OX11 0QX U.K., Bennett TD; Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K. |
| Abstrakt: |
Metal-organic framework crystal-glass composites (MOF-CGCs) are materials in which a crystalline MOF is dispersed within a MOF glass. In this work, we explore the room-temperature stabilization of the open-pore form of MIL-53(Al), usually observed at high temperature, which occurs upon encapsulation within a ZIF-62(Zn) MOF glass matrix. A series of MOF-CGCs containing different loadings of MIL-53(Al) were synthesized and characterized using X-ray diffraction and nuclear magnetic resonance spectroscopy. An upper limit of MIL-53(Al) that can be stabilized in the composite was determined for the first time. The nanostructure of the composites was probed using pair distribution function analysis and scanning transmission electron microscopy. Notably, the distribution and integrity of the crystalline component in a sample series were determined, and these findings were related to the MOF-CGC gas adsorption capacity in order to identify the optimal loading necessary for maximum CO 2 sorption capacity. |
