A robust metal–organic framework for dynamic light-induced wwing adsorption of carbon dioxide
Date
2016
Authors
Li, H.
Martinez, M.
Perry, Z.
Zhou, H.
Falcaro, P.
Doblin, C.
Lim, S.
Hill, A.
Halstead, B.
Hill, M.
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Journal article
Citation
Chemistry - A European Journal, 2016; 22(32):11176-11179
Statement of Responsibility
Haiqing Li, Marta Rubio Martinez, Zachary Perry, Hong-Cai Zhou, Paolo Falcaro, Christian Doblin, Seng Lim, Anita J. Hill, Barry Halstead and Matthew R.Hill
Conference Name
Abstract
Adsorbents for CO₂ capture need to demonstrate efficient release. Light-induced swing adsorption (LISA) is an attractive new method to release captured CO₂ that utilizes solar energy rather than electricity. MOFs, which can be tailored for use in LISA owing to their chemical functionality, are often unstable in moist atmospheres, precluding their use. A MOF is used that can release large quantities of CO₂ via LISA and is resistant to moisture across a large pH range. PCN-250 undergoes LISA, with UV flux regulating the CO₂ desorption capacity. Furthermore, under UV light, the azo residues within PCN-250 have constrained, local, structural flexibility. This is dynamic, rapidly switching back to the native state. Reusability tests demonstrate a 7.3 % and 4.9 % loss in both adsorption and LISA capacity after exposure to water for five cycles. These minimal changes confirm the structural robustness of PCN-250 and its great potential for triggered release applications.
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© 2016 Wiley-VCH Verlag GmbH &Co. KGaA, Weinheim