Issue 9, 2023

Atomically isolated and unsaturated Sb sites created on Sb2S3 for highly selective NO electroreduction to NH3

Abstract

Sb2S3 comprising an atomically isolated and unsaturated Sb (SbAIU) site is demonstrated as a fascinating catalyst for highly selective electrochemical NO-to-NH3 conversion (NORR). Theoretical calculations reveal the crucial function of SbAIU sites to favor the adsorption and activation of NO, accelerate the protonation energetics of the NO-to-NH3 pathway and impede the coverage of H2O/H species, thereby boosting both NORR activity and selectivity. Consequently, the developed SbAIU-rich Sb2S3 catalyst exhibits an excellent NO-to-NH3 faradaic efficiency of 93.7% and a high NH3 yield rate of 168.6 μmol h−1 cm−2, representing the highest NORR selectivity among all reported NORR catalysts.

Graphical abstract: Atomically isolated and unsaturated Sb sites created on Sb2S3 for highly selective NO electroreduction to NH3

Supplementary files

Article information

Article type
Research Article
Submitted
14 feb 2023
Accepted
28 mrt 2023
First published
28 mrt 2023

Inorg. Chem. Front., 2023,10, 2708-2715

Atomically isolated and unsaturated Sb sites created on Sb2S3 for highly selective NO electroreduction to NH3

K. Chen, Y. Zhang, W. Du, Y. Guo and K. Chu, Inorg. Chem. Front., 2023, 10, 2708 DOI: 10.1039/D3QI00268C

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