Reactivity of nitrogen atoms from Zif-8 structure deposited over Ti 3 C 2 MXene in the electrochemical nitrogen reduction reaction

The electrochemical nitrogen reduction reaction (NRR) to produce NH is the most efficient, eco-friendly and cost-effective alternative to the Haber-Bosch process. It is crucial to investigate and develop electrocatalysts selective for NH synthesis. In recent studies, the Ti C MXene has emerged as a...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2023-08, Vol.59 (67), p.10133-10136
Main Authors: Marinho, André L A, Comminges, Clément, Habrioux, Aurélien, Célérier, Stéphane, Bion, Nicolas, Morais, Cláudia
Format: Article
Language:English
Subjects:
Catalysis
Chemical Sciences
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Summary:The electrochemical nitrogen reduction reaction (NRR) to produce NH is the most efficient, eco-friendly and cost-effective alternative to the Haber-Bosch process. It is crucial to investigate and develop electrocatalysts selective for NH synthesis. In recent studies, the Ti C MXene has emerged as a highly promising electrocatalyst for the NRR process. In this work, we explore the effect of Zif-8 addition over MXene sheets in order to control the rate of hydrogen evolution reaction (HER). Despite the better result obtained for Zif-8@Ti C (3.0 μg NH g h at -0.55 V/RHE), the ammonia produced when using Zif-8@Ti C as cathode material is shown to be originated from nitrogen atoms contained in the Zif-8 structure instead of those of N . The results shed light to the need to fully understand the N electroreduction process over -containing electrocatalysts.
ISSN:1359-7345
1364-548X
DOI:10.1039/d3cc02693k