Atomically isolated and unsaturated Sb sites created on Sb2S3 for highly selective NO electroreduction to NH3. Issue 9 (6th April 2023)

• Record Type: Journal Article
• Authors: Chen, Kai; Zhang, Ying; Du, Wenyu; Guo, Yali; Chu, Ke
• Is Part Of: Inorganic chemistry frontiers. Volume 10:Issue 9(2023)
• Page Start: 2708
• Page End: 2715
• Publication Date: 2023-04-06
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d3qi00268c
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : Sb2 S3 comprising atomically isolated and unsaturated Sb (SbAIU ) sites is demonstrated as an efficient catalyst for NORR, attributed to the critical role of SbAIU sites in promoting NORR and inhibiting competitive hydrogen evolution. Abstract : Sb2 S3 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 H2 O/H species, thereby boosting both NORR activity and selectivity. Consequently, the developed SbAIU -rich Sb2 S3 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.