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Issue 21, 2019
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Selective decontamination of the reactive air pollutant nitrous acid via node-linker cooperativity in a metal–organic framework

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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.

Graphical abstract: Selective decontamination of the reactive air pollutant nitrous acid via node-linker cooperativity in a metal–organic framework

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Publication details

The article was received on 19 Mar 2019, accepted on 26 Apr 2019 and first published on 29 Apr 2019


Article type: Edge Article
DOI: 10.1039/C9SC01357A
Chem. Sci., 2019,10, 5576-5581
  • Open access: Creative Commons BY license
    All publication charges for this article have been paid for by the Royal Society of Chemistry

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    Selective decontamination of the reactive air pollutant nitrous acid via node-linker cooperativity in a metal–organic framework

    D. T. McGrath, M. D. Ryan, J. J. MacInnis, T. C. VandenBoer, C. J. Young and M. J. Katz, Chem. Sci., 2019, 10, 5576
    DOI: 10.1039/C9SC01357A

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