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- Title
Single-Atom Bi Alloyed Pd Metallene for Nitrate Electroreduction to Ammonia.
- Authors
Chen, Kai; Ma, Ziyu; Li, Xingchuan; Kang, Jilong; Ma, Dongwei; Chu, Ke
- Abstract
Electrochemical reduction of nitrate to ammonia (NO3RR) holds a great promise for attaining both NH3 electrosynthesis and wastewater purification. Herein, single-atom Bi alloyed Pd metallene (Bi1Pd) is reported as a highly effective NO3RR catalyst, showing a near 100% NH3-Faradaic efficiency with the corresponding NH3 yield of 33.8 mg h-1 cm-2 at -0.6 V versus RHE, surpassing those of almost all ever reported NO3RR catalysts. In-depth theoretical and operando spectroscopic investigations unveil that single-atom Bi electronically couples with its neighboring Pd atoms to synergistically activate NO3- and destabilize *NO on Bi1Pd, leading to the reduced energy barrier ofthe potential-determining step (*NO→*NOH) and enhanced protonation energetics of NO3--to-NH3 pathway.
- Subjects
ACTIVATION energy; ELECTROLYTIC reduction; DENITRIFICATION; ELECTROSYNTHESIS; ALLOYS; PROTON transfer reactions
- Publication
Advanced Functional Materials, 2023, Vol 33, Issue 12, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202209890