articleAdvanced Functional MaterialsJan 18, 2023Closed access

Lewis Acid Fe‐V Pairs Promote Nitrate Electroreduction to Ammonia

NZNana ZhangGZGuike ZhangPSPeng ShenHZHu ZhangDMDongwei Ma

Lanzhou Jiaotong University · University of Science and Technology Beijing · +1 more institution

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Abstract

Abstract Electrochemical reduction of nitrate to ammonia (NO 3 RR) has been recognized as an appealing approach to realize both sustainable NH 3 production and waste nitrate removal. Herein, from the perspective of Lewis acid‐base interaction, a single‐atom Fe‐doped V 2 O 5 (Fe‐V 2 O 5 ) catalyst enriched is designed with Lewis acid sites, which present the maximum NH 3 ‐Faradaic efficiency of 97.1% with the corresponding NH 3 yield of 12.5 mg h −1 cm −2 at –0.7 V versus RHE. Mechanistic studies based on theoretical calculations and operando spectroscopic characterizations identify the creation of Lewis acid Fe‐V pairs on Fe‐V 2 O 5 , which can synergetically activate the NO 3 − , promote the hydrogenation…

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Topics & keywords

Topics
Keywords
  • Lewis acids and bases
  • Ammonia
  • Nitrate
  • Catalysis
  • Electrochemistry
  • Selectivity
  • Yield (engineering)
  • Inorganic chemistry
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