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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, 5(8), 605-613. doi:10.1038/s41560-020-0654-1.

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

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Schlagwörter: Electrocatalysis, Heterogeneous catalysis, Materials for energy and catalysis
 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2020-07-272020
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1038/s41560-020-0654-1
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Titel: Nature Energy
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Springer Nature
Seiten: - Band / Heft: 5 (8) Artikelnummer: - Start- / Endseite: 605 - 613 Identifikator: ISSN: 2058-7546