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A Robust Metal–Organic Framework for Dynamic Light‐Induced Swing Adsorption of Carbon Dioxide
Author(s) -
Li Haiqing,
Martinez Marta Rubio,
Perry Zachary,
Zhou HongCai,
Falcaro Paolo,
Doblin Christian,
Lim Seng,
Hill Anita J.,
Halstead Barry,
Hill Matthew R.
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201602671
Subject(s) - adsorption , robustness (evolution) , swing , carbon dioxide , flexibility (engineering) , desorption , materials science , chemical engineering , reusability , electricity , nanotechnology , environmental science , chemistry , computer science , physics , organic chemistry , engineering , biochemistry , statistics , mathematics , software , quantum mechanics , gene , programming language , acoustics
Adsorbents for CO 2 capture need to demonstrate efficient release. Light‐induced swing adsorption (LISA) is an attractive new method to release captured CO 2 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 CO 2 via LISA and is resistant to moisture across a large pH range. PCN‐250 undergoes LISA, with UV flux regulating the CO 2 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.