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Capturing carbon dioxide from air by using amine-functionalized metal-organic frameworks

Jian Yang, Guang Yang, Zhijie Chen*



This work highlights two different strategies for functionalizing amino groups in MOF-808: directly bind amino acid to zirconium cluster and polyamine incorporation via nucleophilic substitution. The synthesized MOF-808-AAs and MOF-808-PAs exhibited remarkable CO2 uptake capacity with amino group. Furthermore, under humidity condition, the CO2 uptake capacity is greatly enhanced by dynamic breakthrough measurements. This research reveals that amine-functionalized MOF-808 are promising sorbents for direct air capture of CO2 and propose a new strategy for functionalizing MOFs with post-modification for other applications.

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