Enhancement of catalytic hydrolysis activity for organophosphates by the metal–organic framework MOF-808-NH2via post-synthetic modification.

Autor: Garibay, Sergio J., Tovar, Trenton M., Iordanov, Ivan O., Peterson, Gregory W., DeCoste, Jared B.
Zdroj: Journal of Materials Chemistry A; 7/7/2023, Vol. 11 Issue 25, p13300-13308, 9p
Abstrakt: Metal–organic frameworks (MOFs) necessitate buffers or basic amine moieties for high activity and turnover in the hydrolysis of organophosphates. While polymeric amine buffers can be integrated with a MOF, all solid-state formulations suffer from active site poisoning of the secondary building units (SBUs) within MOFs which inhibits further catalytic turnover. Herein, we developed a simple soaking procedure with a basic aqueous solution that reactivates the active sites of spent MOFs after organophosphate catalysis. Moreover, we develop amine functionalized MOF-808 derivatives through de novo synthesis with H3-BTC-NH2 (BTC = 1,3,5-benzenetricarboxylic acid) and post-synthetic modification (PSM) that are highly active for organophosphate hydrolysis under non-buffered aqueous conditions. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index