articleAdvanced Functional MaterialsApr 23, 2024BRONZE OA

Tandem Electrocatalytic Reduction of Nitrite to Ammonia on Rhodium–Copper Single Atom Alloys

JXJiaqi XiangCQChaofan QiangSSShiyao ShangKCKai ChenCKChaoyang Kang

Lanzhou Jiaotong University · Henan University

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Abstract

Abstract Electrocatalytic reduction of NO 2 − to NH 3 (NO 2 RR) presents a fascinating approach for simultaneously migrating NO 2 − pollutants and producing valuable NH 3 . In this study, single‐atom Rh‐alloyed copper (CuRh 1 ) is explored as a highly active and selective catalyst toward the NO 2 RR. Combined theoretical calculations and in situ FTIR/EPR spectroscopic experiments uncover the synergistic effect of Rh 1 and Cu to promote the NO 2 RR energetics of CuRh 1 through a tandem catalysis pathway, in which Rh 1 activates the preliminary adsorption and hydrogenation of NO 2 − (NO 2 − → *NO 2 → *NOOH → *NO), while the generated *NO on Rh 1 is then transferred on Cu substrate which promotes the…

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Topics & keywords

Topics
Keywords
  • Faraday efficiency
  • Catalysis
  • Copper
  • Electrolysis
  • Materials science
  • Rhodium
  • Ammonia
  • Nitrite
UN Sustainable Development Goals
  • Clean water and sanitation
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