Photocatalytic removal of the greenhouse gas nitrous oxide by liposomal microreactors

Piper, Samuel E. H., Casadevall, Carla, Reisner, Erwin, Clarke, Thomas A., Jeuken, Lars J. C., Gates, Andrew J. ORCID: https://orcid.org/0000-0002-4594-5038 and Butt, Julea N. ORCID: https://orcid.org/0000-0002-9624-5226 (2022) Photocatalytic removal of the greenhouse gas nitrous oxide by liposomal microreactors. Angewandte Chemie International Edition. ISSN 1433-7851

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Abstract

Nitrous oxide (N2O) is a potent greenhouse and ozone-reactive gas for which emissions are growing rapidly due to increasingly intensive agriculture. Synthetic catalysts for N2O decomposition typically contain precious metals and/or operate at elevated temperatures driving a desire for more sustainable alternatives. Here we demonstrate self-assembly of liposomal microreactors enabling catalytic reduction of N2O to the climate neutral product N2. Photoexcitation of graphitic N-doped carbon dots delivers electrons to encapsulated N2O Reductase enzyme via a lipid-soluble biomolecular wire provided by the MtrCAB protein complex. Within the microreactor, electron transfer from MtrCAB to N2O Reductase is facilitated by the general redox mediator methyl viologen. The liposomal microreactors use only earth-abundant elements to catalyze N2O removal in ambient, aqueous conditions.

Item Type: Article
Additional Information: Funding was from the UK Biotechnology and Biological Sciences Research Council (BB/S002499/1, BB/S00159X/1, BB/S000704/1, BB/S008942/1, a Doctoral Training Partnership PhD studentship to SEHP) and Engineering and Physical Sciences Research Council (EP/M001989/1). The European Commission is acknowledged for a Marie Sklodowska-Curie Individual Fellowship (890745-SmArtC to CC). Access to transmission electron microscopy was provided through the EPSRC Multi-User Equipment Call (EP/P030467/1). For the purpose of open access, the author has applied a CC BY public copyright license to any Author Accepted Manuscript version arising. The data that support the findings of this study are openly available in figshare at DOI: 10.6084/m9.figshare.20337783.
Uncontrolled Keywords: carbon dot,enzyme catalysis,liposomes,nitrous oxide,photochemistry,chemistry(all),catalysis,sdg 13 - climate action,3* ,/dk/atira/pure/subjectarea/asjc/1600
Faculty \ School: Faculty of Science > School of Biological Sciences
Faculty of Science > School of Chemistry
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Depositing User: LivePure Connector
Date Deposited: 12 Aug 2022 10:33
Last Modified: 26 Sep 2022 14:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/87200
DOI: 10.1002/anie.202210572

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