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Lookup NU author(s): Dr Xiao Han, Emeritus Professor Mark ThomasORCiD
This is the of an article that has been published in its final definitive form by Nature Publishing Group, 2018.
For re-use rights please refer to the publisher's terms and conditions.
© 2018 The Author(s) Nitrogen dioxide (NO2) is a major air pollutant causing significant environmental1,2 and health problems3,4. We report reversible adsorption of NO2 in a robust metal–organic framework. Under ambient conditions, MFM-300(Al) exhibits a reversible NO2 isotherm uptake of 14.1 mmol g−1, and, more importantly, exceptional selective removal of low-concentration NO2 (5,000 to <1 ppm) from gas mixtures. Complementary experiments reveal five types of supramolecular interaction that cooperatively bind both NO2 and N2O4 molecules within MFM-300(Al). We find that the in situ equilibrium 2NO2 ↔ N2O4 within the pores is pressure-independent, whereas ex situ this equilibrium is an exemplary pressure-dependent first-order process. The coexistence of helical monomer–dimer chains of NO2 in MFM-300(Al) could provide a foundation for the fundamental understanding of the chemical properties of guest molecules within porous hosts. This work may pave the way for the development of future capture and conversion technologies.
Author(s): Han X, Godfrey HGW, Briggs L, Davies AJ, Cheng Y, Daemen LL, Sheveleva AM, Tuna F, McInnes EJL, Sun J, Drathen C, George MW, Ramirez-Cuesta AJ, Thomas KM, Yang S, Schroder M
Publication type: Article
Publication status: Published
Journal: Nature Materials
Year: 2018
Volume: 17
Pages: 691-696
Online publication date: 11/06/2018
Acceptance date: 10/05/2018
Date deposited: 16/04/2018
ISSN (print): 1476-1122
ISSN (electronic): 1476-4660
Publisher: Nature Publishing Group
URL: https://doi.org/10.1038/s41563-018-0104-7
DOI: 10.1038/s41563-018-0104-7
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