Simultaneously Enhanced Hydrophilicity and Stability of a Metal‐Organic Framework via Post‐Synthetic Modification for Water Vapor Sorption/Desorption
- Department of Chemical and Biomolecular Engineering &, Institute for NanoBioTechnology Johns Hopkins University 3400N. Charles Street Baltimore MD 21218 USA
- Department of Chemical and Biomolecular Engineering &, Institute for NanoBioTechnology Johns Hopkins University 3400N. Charles Street Baltimore MD 21218 USA, School of Nano &, Materials Science and Engineering Kyungpook National University 2559 Gyeongsang-daero, Sangju-si Gyeongsangbuk-do 37224 Republic of Korea
- Department of Chemical and Biomolecular Engineering and Catalysis Center for Energy Innovation University of Delaware Newark DE 19716 USA
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA, Department of Chemistry and Chemical Theory Center University of Minnesota 207 Pleasant Street SE Minneapolis MN 55455 USA
- Department of Chemical Engineering and Materials Science University of Minnesota 421 Washington Avenue SE Minneapolis MN 55455 USA
- Applied Physics Laboratory Johns Hopkins University 11100 Johns Hopkins Road Laurel MD 20723 USA
- Department of Chemical and Biomolecular Engineering &, Institute for NanoBioTechnology Johns Hopkins University 3400N. Charles Street Baltimore MD 21218 USA, Applied Physics Laboratory Johns Hopkins University 11100 Johns Hopkins Road Laurel MD 20723 USA
With increasing demands for high‐performance water sorption materials, metal‐organic frameworks (MOFs) have gained considerable attention due to their high maximum uptake capacities. In many cases, however, high overall capacity is not necessarily accomplishing high working capacity under operating conditions, due to insufficient hydrophilicity and/or water stability. Herein, we present a post‐synthetic modification (PSM) of MOF‐808, with di‐sulfonic acids enhancing simultaneously its hydrophilicity and water stability without sacrificing its uptake capacity of ≈30 mmol g −1 . Di‐sulfonic acid PSM enabled a shift of the relative humidity (RH) associated with a sharp step in water vapor sorption from 35–40 % RH in MOF‐808 to below 25 % RH. While MOF‐808 lost uptake capacity and crystallinity over multiple sorption/desorption cycles, the di‐sulfonic acid PSM MOF‐808 retained >80 % of the original capacity. PSM MOF‐808 exhibited good hydrothermal stability up to 60 °C and high swing capacity.
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- SC0001004
- OSTI ID:
- 1894726
- Journal Information:
- Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 44 Vol. 134; ISSN 0044-8249
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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