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Media type:
E-Article
Title:
Electrochemical Nitric Oxide Reduction on Metal Surfaces
Contributor:
Wan, Hao;
Bagger, Alexander;
Rossmeisl, Jan
Published:
Wiley, 2021
Published in:
Angewandte Chemie International Edition, 60 (2021) 40, Seite 21966-21972
Language:
English
DOI:
10.1002/anie.202108575
ISSN:
1433-7851;
1521-3773
Origination:
Footnote:
Description:
AbstractElectrocatalytic denitrification is a promising technology for removing NOx species (NO3−, NO2− and NO). For NOx electroreduction (NOxRR), there is a desire for understanding the catalytic parameters that control the product distribution. Here, we elucidate selectivity and activity of catalyst for NOxRR. At low potential we classify metals by the binding of *NO versus *H. Analogous to classifying CO2 reduction by *CO vs. *H, Cu is able to bind *NO while not binding *H giving rise to a selective NH3 formation. Besides being selective, Cu is active for the reaction found by an activity‐volcano. For metals that does not bind NO the reaction stops at NO, similar to CO2‐to‐CO. At potential above 0.3 V vs. RHE, we speculate a low barrier for N coupling with NO causing N2O formation. The work provides a clear strategy for selectivity and aims to inspire future research on NOxRR.