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  Electrochemical reduction of nitrate to ammonia via direct eight-electron transfer using a copper–molecular solid catalyst

Chen, G., Yuan, Y., Jiang, H., Ren, S.-Y., Ding, L.-X., Ma, L., et al. (2020). Electrochemical reduction of nitrate to ammonia via direct eight-electron transfer using a copper–molecular solid catalyst. Nature Energy. doi:10.1038/s41560-020-0654-1.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-CEA4-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-CEA5-8
Genre: Journal Article

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 Creators:
Chen, Gaofeng1, Author              
Yuan, Yifei, Author
Jiang, Haifeng, Author
Ren, Shi-Yu, Author
Ding, Liang-Xin, Author
Ma, Lu, Author
Wu, Tianpin, Author
Lu, Jun, Author
Wang, Haihui, Author
Affiliations:
1Aleksandr Savateev, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2421702              

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Free keywords: Electrocatalysis, Heterogeneous catalysis, Materials for energy and catalysis
 Abstract: Ammonia (NH3) is essential for modern agriculture and industry and is a potential energy carrier. NH3 is traditionally synthesized by the Haber–Bosch process at high temperature and pressure. The high-energy input of this process has motivated research into electrochemical NH3 synthesis via nitrogen (N2)–water reactions under ambient conditions. However, the future of this low-cost process is compromised by the low yield rate and poor selectivity, ascribed to the inert N≡N bond and ultralow solubility of N2. Obtaining NH3 directly from non-N2 sources could circumvent these challenges. Here we report the eight-electron direct electroreduction of nitrate to NH3 catalysed by copper-incorporated crystalline 3,4,9,10-perylenetetracarboxylic dianhydride. The catalyst exhibits an NH3 production rate of 436 ± 85 μg h−1 cm−2 and a maximum Faradaic efficiency of 85.9% at −0.4 V versus a reversible hydrogen electrode. This notable performance is achieved by the catalyst regulating the transfer of protons and/or electrons to the copper centres and suppressing hydrogen production.

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Language(s): eng - English
 Dates: 2020-07-27
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1038/s41560-020-0654-1
 Degree: -

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Title: Nature Energy
Source Genre: Journal
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Publ. Info: London : Springer Nature
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISSN: 2058-7546