August 7, 2025ChemSusChem

Fe3+/Fe2+‐Tuned Iron Oxides for Enhanced Interfacial Nitrate Activation Toward Efficient Electrochemical Ammonia Production

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Electrochemical nitrate-to-ammonia conversion shows high ammonia yield in a mesoporous catalyst, suggesting improved efficiency and performance.

The mesoporous FeOx catalyst achieves an ammonia yield rate of 255.40 μmol cm−2 h−1, demonstrating superior performance.
A Faradaic efficiency for ammonia production reached 91.63% at −1.0 V versus RHE, outperforming many Fe-based catalysts.
Dynamic regulation of nitrate adsorption occurs through cathodically tuned Fe3+/Fe2+ redox pairs.
The design combining nanostructural engineering and electronic modulation enhances multistep electrocatalysis reactions.

Zhou et al. (2025) studied this question.

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Electrochemical nitrate-to-ammonia conversion shows high ammonia yield in a mesoporous catalyst, suggesting improved efficiency and performance.