Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41467-019-08972-x
Title: Rational approach to guest confinement inside MOF cavities for low-temperature catalysis
Authors: Wang, T.
Gao, L.
Hou, J.
Herou, S.J.A.
Griffiths, J.T.
Li, W.
Dong, J.
Gao, S.
Titirici, M.-M.
Kumar, R.V.
Cheetham, A.K. 
Bao, X.
Fu, Q.
Smoukov, S.K.
Issue Date: 2019
Publisher: Nature Publishing Group
Citation: Wang, T., Gao, L., Hou, J., Herou, S.J.A., Griffiths, J.T., Li, W., Dong, J., Gao, S., Titirici, M.-M., Kumar, R.V., Cheetham, A.K., Bao, X., Fu, Q., Smoukov, S.K. (2019). Rational approach to guest confinement inside MOF cavities for low-temperature catalysis. Nature Communications 10 (1) : 1340. ScholarBank@NUS Repository. https://doi.org/10.1038/s41467-019-08972-x
Rights: Attribution 4.0 International
Abstract: Geometric or electronic confinement of guests inside nanoporous hosts promises to deliver unusual catalytic or opto-electronic functionality from existing materials but is challenging to obtain particularly using metastable hosts, such as metal–organic frameworks (MOFs). Reagents (e.g. precursor) may be too large for impregnation and synthesis conditions may also destroy the hosts. Here we use thermodynamic Pourbaix diagrams (favorable redox and pH conditions) to describe a general method for metal-compound guest synthesis by rationally selecting reaction agents and conditions. Specifically we demonstrate a MOF-confined RuO 2 catalyst (RuO 2 @MOF-808-P) with exceptionally high catalytic CO oxidation below 150 °C as compared to the conventionally made SiO 2 -supported RuO 2 (RuO 2 /SiO 2 ). This can be caused by weaker interactions between CO/O and the MOF-encapsulated RuO 2 surface thus avoiding adsorption-induced catalytic surface passivation. We further describe applications of the Pourbaix-enabled guest synthesis (PEGS) strategy with tutorial examples for the general synthesis of arbitrary guests (e.g. metals, oxides, hydroxides, sulfides). © 2019, The Author(s).
Source Title: Nature Communications
URI: https://scholarbank.nus.edu.sg/handle/10635/209911
ISSN: 2041-1723
DOI: 10.1038/s41467-019-08972-x
Rights: Attribution 4.0 International
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