A defect engineered p-block SnS2−x catalyst for efficient electrocatalytic NO reduction to NH3. Issue 1 (24th November 2022)

• Record Type: Journal Article
• Authors: Li, Xiaotian; Zhang, Guike; Shen, Peng; Zhao, Xiaolin; Chu, Ke
• Is Part Of: Inorganic chemistry frontiers. Volume 10:Issue 1(2023)
• Page Start: 280
• Page End: 287
• Publication Date: 2022-11-24
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2qi02118h
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : Defect-engineered SnS2− x has been demonstrated for the first time as an efficient p-block catalyst for electrocatalytic NO reduction to NH3 (NORR), attributed to the active Sn-VS sites that selectively activate NO and reduce the energy barriers of the NORR pathway. Abstract : Electrocatalytic NO reduction to NH3 (NORR) has emerged as an attractive approach for simultaneously realizing NO abatement and ammonia generation. Herein, we demonstrate for the first time that p-block Sn-based materials are promising NORR catalysts. A defect engineering strategy is employed to develop a SnS2− x catalyst enriched with S-vacancy (VS ) defects. SnS2− x delivers an exceptional NH3 -faradaic efficiency of 90.3% with an NH3 yield rate of 78.6 μmol h −1 cm −2, outperforming most reported d-block NORR catalysts. Theoretical computations unveil that the high NORR performance of SnS2− x arises from the active Sn-VS sites which can selectively activate NO and reduce the energy barriers of the NORR pathway.