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Electroreduction of Nitrogen to Ammonia at Iron Catalytic Sites Generated at Interfaces Utilizing Iron Phosphides and Heme-Type Complexes : article2022, izvirni znanstveni članek
Opis: There has been growing interest in the development of durable,
specific and reasonably efficient low-cost catalysts for nitrogen
(N2) electroreduction reaction, or nitrogen fixation, particularly in
aqueous solutions capable of producing ammonia under ambient,
or near ambient, conditions. The successful electrocatalytic
reduction of nitrogen (N2) and formation of NH3 in alkaline an
medium has been reported here using the Fe3P phase of iron
phosphide. Detection of in-situ formed product has been achieved
by probing the electrooxidation of NH3 to nitrogen (N2) using the
additional working electrode modified with Pt nanoparticles. On
mechanistic grounds, the iron (Fe0) sites seem to be electrocatalytic
active during the reduction of nitrogen. The iron sites can also be
generated within the phtalocyanine ring binding metal ions through
four inwardly projecting nitrogen centers. Furthermore,
horseradish peroxidase metalloenzyme, in which a large alpha-
helical protein binds heme as a redox cofactor, is capable of
inducing electroduction of N2.
Ključne besede: Electroreduction of Nitrogen to Ammonia
Iron Catalytic Sites
Iron Phosphides
Objavljeno v RUNG: 06.02.2023; Ogledov: 808; Prenosov: 0
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