Role of Interfacial Water Structure in the Electroreduction of NO over Cu2O
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 46384–46391 |
Journal / Publication | ACS Applied Materials and Interfaces |
Volume | 16 |
Issue number | 35 |
Online published | 23 Aug 2024 |
Publication status | Published - 4 Sept 2024 |
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Abstract
The electrochemical nitric oxide reduction reaction (NORR), which utilizes water as the sole hydrogen source, has the potential to facilitate ammonia production while concurrently mitigating pollutants. However, limited research has been dedicated to characterizing the structure of interfacial water due to the challenges associated with probing this intricate system, impeding the development of more efficient catalysts for the NORR process. Herein, the Cu2O microcrystals with distinct exposed facets, including {100}, {110}, and {111}, are employed for the model catalysts to investigate interfacial water structure and intermediate species in the NORR process. The results from shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) indicated that the NORR performance in 0.1 M Na2SO4 (with heavy water as the solvent) was positively correlated to the proportion of hydrated Na+ ion water. In addition, a sequence of intermediates from the NORR, including *NOH, *NH, *NH2, and *NH3, was detected by employing a combination of multiple in situ characterization methods. Furthermore, in conjunction with experimental results and theoretical calculations, we revealed the potential reaction pathway of NORR. This study offers novel insights into the NORR mechanism and valuable guidance for the design of high-performance catalysts for ammonia production. © 2024 American Chemical Society.
Research Area(s)
- Cu2O, interfacial water, intermediates, NO reduction reaction, surface-enhanced Raman spectroscopy
Citation Format(s)
Role of Interfacial Water Structure in the Electroreduction of NO over Cu2O. / Bai, Chunpeng; Fan, Shiying; Li, Xinyong et al.
In: ACS Applied Materials and Interfaces, Vol. 16, No. 35, 04.09.2024, p. 46384–46391.
In: ACS Applied Materials and Interfaces, Vol. 16, No. 35, 04.09.2024, p. 46384–46391.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review