articleAdvanced Functional MaterialsJan 15, 2023Closed access

Single‐Atom Bi Alloyed Pd Metallene for Nitrate Electroreduction to Ammonia

KCKai ChenZMZiyu MaXLXingchuan LiJKJilong KangDMDongwei Ma

Lanzhou Jiaotong University · Henan University

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Abstract

Abstract Electrochemical reduction of nitrate to ammonia (NO 3 RR) holds a great promise for attaining both NH 3 electrosynthesis and wastewater purification. Herein, single‐atom Bi alloyed Pd metallene (Bi 1 Pd) is reported as a highly effective NO 3 RR catalyst, showing a near 100% NH 3 ‐Faradaic efficiency with the corresponding NH 3 yield of 33.8 mg h −1 cm −2 at −0.6 V versus RHE, surpassing those of almost all ever reported NO 3 RR catalysts. In‐depth theoretical and operando spectroscopic investigations unveil that single‐atom Bi electronically couples with its neighboring Pd atoms to synergistically activate NO 3 − and destabilize *NO on Bi 1 Pd, leading to the reduced energy barrier of the…

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6

Topics & keywords

Topics
Keywords
  • Electrosynthesis
  • Catalysis
  • Materials science
  • Faraday efficiency
  • Ammonia
  • Protonation
  • Atom (system on chip)
  • Yield (engineering)
UN Sustainable Development Goals
  • Clean water and sanitation
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