A Janus antimony sulfide catalyst for highly selective N2 electroreduction. Issue 71 (6th August 2020)

• Record Type: Journal Article
• Authors: Nan, Haifeng; Liu, Yaping; Li, Qingqing; Shen, Peng; Chu, Ke
• Is Part Of: Chemical communications. Volume 56:Issue 71(2020)
• Page Start: 10345
• Page End: 10348
• Publication Date: 2020-08-06
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d0cc04764c
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Sb2 S3 delivered an excellent NRR faradaic efficiency of 24.1% at −0.3 V, attributed to the Janus role of active Sb centers that contributed to the boosted NRR and the suppressed HER. Abstract : The antimony sulfide Sb2 S3 is firstly explored as a Janus catalyst for highly selective nitrogen reduction reaction (NRR). The developed Sb2 S3 nanoflowers delivered an excellent faradaic efficiency of 24.1% and a high NH3 yield of 33.4 μg h −1 mg −1 at −0.3 V. Theoretical calculations revealed that the high NRR selectivity of Sb2 S3 originated from the Janus role of active Sb centers: on one hand, Sb exhibited a strong Sb5p–N2p hybridization upon initial N2 protonation, capable of effectively activating the NRR with a low reaction barrier. On the other hand, Sb could concurrently impede the hydrogen evolution by hindering the H + adsorption.