Main-group indium single-atom catalysts for electrocatalytic NO reduction to NH 3

Main-group metal elements show great potential for exploring high-performance catalysts for electrochemical reduction of NO to NH 3 (NORR) but remain largely unexplored. Herein, as a proof-of-concept, main-group In single atoms confined in an amorphous MoO 3 substrate (In 1 /a-MoO 3 ) are explored a...

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Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2023-03, Vol.11 (13), p.6814-6819
Main Authors: Chen, Kai, Zhang, Nana, Wang, Fuzhou, Kang, Jilong, Chu, Ke
Format: Article
Language:English
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Summary:Main-group metal elements show great potential for exploring high-performance catalysts for electrochemical reduction of NO to NH 3 (NORR) but remain largely unexplored. Herein, as a proof-of-concept, main-group In single atoms confined in an amorphous MoO 3 substrate (In 1 /a-MoO 3 ) are explored as an efficient NORR catalyst, showing a maximum NH 3 yield of 242.6 μmol h −1 cm −2 and NH 3 -faradaic efficiency of 92.8%. Further experiments and theoretical results identify single-site In atoms as the dominating active centers to simultaneously inhibit the hydrogen evolution and optimize the hydrogenation energetics of the NO-to-NH 3 pathway.
ISSN:2050-7488
2050-7496
DOI:10.1039/D3TA00606A