Selective Decontamination of the Reactive Air Pollutant Nitrous Acid via Node-Linker Cooperativity in a Metal-Organic Framework

McGrath, Devon T. and Ryan, Michaella D. and MacInnis, John J. and Vandenboer, Trevor and Young, Cora J. and Katz, Michael J. (2019) Selective Decontamination of the Reactive Air Pollutant Nitrous Acid via Node-Linker Cooperativity in a Metal-Organic Framework. Chemical Science, 10 (21). pp. 5576-5581. ISSN 2041-6539

[English] PDF (The version available in this research repository is a postprint. It has the same peer-reviewed content as the published version, but lacks publisher layout and branding.) - Accepted Version Available under License Creative Commons Attribution Non-commercial. Download (660kB)

Abstract

Nitrous acid (HONO) is a reservoir of NOx and an emerging pollutant having direct impacts on air quality, both in- and outdoors, as well as on human health. In this work, the amine-functionalized metal–organic framework (MOF), UiO-66-NH2, was investigated due to its potential to selectively decontaminate nitrous acid at environmentally relevant concentrations. UiO-66-NH2 proved to be effective in the removal of nitrous acid from a continuous gaseous stream. This is observed via the formation of an aryl diazonium salt that subsequently converts to a phenol with a concomitant release of nitrogen gas. This process is preceded via the formation of the nitrosonium cation (likely protonation from an acidic proton on the node). Thus, UiO-66-NH2 is capable of selectively converting the pollutant nitrous acid to benign products.

Actions (login required)

View Item