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Air Oxidation of Sulfur Mustard Gas Simulant Using a Pyrene-Based Metal-Organic Framework Photocatalyst

preprint
submitted on 22.08.2019 and posted on 23.08.2019 by Ghada Ayoub, Mihails Arhangelskis, Xuan Zhang, Florencia Son, Timur Islamoglu, Tomislav Friscic, Omar Farha
We demonstrate a microporous metal-organic framework NU-400 based on a 2,7-disubstituted pyrene linker as a highly efficient photosensitizer for generating singlet oxygen and subsequent oxidative degradation of chemical warfare agents (CWAs). The high activity of NU-400 permits photocatalytic conversion of the 2-chloroethyl ethyl sulfide (CEES) mustard gas simulant into a benign sulfoxide derivative, in air, with less than 15 minutes half-life. This is a considerable improvement to NU-1000 based on a 1,3,6,8-tetrasubstituted pyrene unit, demonstrating how variation of the substitution pattern of a metal-organic framework linker permits modification of its photoactive behavior.

Funding

Defense Threat Reduction Agency (HDTRA1-18-1-0003)

National Science and Engineering Research Council (NSERC) Discovery Grant (RGPIN-2017-06467)

NSERC E.W.R. Steacie Memorial Fellowship (SMFSU 507347-17)

McGill University Graduate Student Mobility Award

Northwestern University

History

Email Address of Submitting Author

ghada.ayoub@mail.mcgill.ca

Institution

McGill University

Country

Canada

ORCID For Submitting Author

0000-0002-5864-8681

Declaration of Conflict of Interest

No conflict of interest.

Version Notes

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