电化学（中英文）2025，Vol.31Issue(4)：1-11,11.DOI:10.61558/2993-074X.3525
Fe3C纳米晶体电催化一氧化氮还原合成氨
Electrocatalytic Nitric Oxide Reduction to Yield Ammonia over Fe3C Nanocrystals
摘要
Abstract
Nitric oxide(NO),which generally originates from vehicle exhaust and industrial flue gases,is one of the most serious air pollutants.In this case,the electrochemical NO reduction reaction(NORR)not only removes the atmospheric pollutant NO but also produces valuable ammonia(NH3).Hence,through the synthesis and modification of Fe3C nanocrystal cata-lysts,the as-obtained optimal sample of Fe3C/C-900 was adopted as the NORR catalyst at ambient conditions.As a result,the Fe3C/C-900 catalyst showed an NH3 Faraday efficiency of 76.5％and an NH3 yield rate of 177.5 μmol·h-1·cm-2 at the working potentials of-0.8 and-1.2 V versus reversible hydrogen electrode(vs.RHE),respectively.And it delivered a stable NORR activity during the electrolysis.Moreover,we attribute the high NORR properties of Fe3C/C-900 to two aspects:one is the enhanced intrinsic activity of Fe3C nanocrystals,including the lowering of the energy barrier of rate-limiting step(*NOH→*N)and the inhibition of hydrogen evolution;on the other hand,the favorable dispersion of active components,the effective adsorption of gaseous NO,and the release of liquid NH3 products facilitated by the porous carbon substrate.关键词
一氧化氮还原/合成氨/Fe3C纳米晶体/电催化/理论计算Key words
Nitric oxide reduction/NH3 synthesis/Fe3C nanocrystal/Electrolysis/Theoretical calculation引用本文复制引用
林森,张浪,侯童,丁俊阳,彭紫默,刘亦帆,刘熙俊..Fe3C纳米晶体电催化一氧化氮还原合成氨[J].电化学（中英文）,2025,31(4):1-11,11.基金项目
This work was financially supported by the Guangxi Natural Science Fund for Distinguished Young Schol-ars(2024GXNSFFA010008),and Shenzhen Science and Technology Program(JCYJ20230807112503008). （2024GXNSFFA010008）
