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Photocatalytic Removal of the Greenhouse Gas Nitrous Oxide by Liposomal Microreactors.

Published version
Peer-reviewed

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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 enzymes 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.

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Keywords

Carbon Dot, Enzyme Catalysis, Liposomes, Nitrous Oxide, Photochemistry

Journal Title

Angew Chem Weinheim Bergstr Ger

Conference Name

Journal ISSN

0044-8249
1521-3757

Volume Title

Publisher

Wiley
Sponsorship
Engineering and Physical Sciences Research Council (EP/P030467/1)
Biotechnology and Biological Sciences Research Council (BB/S00159X/1)
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (890745)