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Angewandte Chemie
Article . 2023 . Peer-reviewed
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Einzelpartikel‐Elektrochemie belegt die dynamische Transformation von Cu2O und Co3O4 während der Tandemkatalyse zur Umwandlung von NO3− in NH3

Authors: Zhang, Jian; He, Wenhui; Quast, Thomas; Junqueira, João R. C.; Saddeler, Sascha; Schulz, Stephan; Schuhmann, Wolfgang;

Einzelpartikel‐Elektrochemie belegt die dynamische Transformation von Cu2O und Co3O4 während der Tandemkatalyse zur Umwandlung von NO3− in NH3

Abstract

AbstractDie elektrochemische Umwandlung von Nitrat in Ammoniak ist ein wichtiger und nachhaltiger Ansatz zur Wiederherstellung des weltweit gestörten Stickstoffkreislaufs. Die rationale Entwicklung von Katalysatoren für die Nitratreduktionsreaktion (NO3RR) auf der Grundlage eines detaillierten Verständnisses des Reaktionsmechanismus ist von großer Bedeutung. Wir berichten über einen Cu2O+Co3O4‐Tandemkatalysator, der die NH3‐Produktionsrate im Vergleich zu Co3O4 um das ≈2.7‐fache und im Vergleich zu Cu2O um das ≈7.5‐fache steigert. Am wichtigsten ist jedoch, dass wir einzelne würfelförmige Cu2O‐ und Co3O4‐Nanopartikel einzeln und zusammen auf Kohlenstoff‐Nanoelektroden platzieren, was einen Einblick in den Mechanismus der Tandemkatalyse ermöglicht. Die Struktur‐ und Phasenentwicklung der einzelnen Cu2O+Co3O4‐Nanowürfel während der NO3RR wird mit Hilfe der Transmissionselektronenmikroskopie an identischer Stelle belegt. Die Kombination von Einzelpartikel‐Elektrochemie mit präziser Nanopositionierung wirft ein direktes Licht auf die dynamische Umwandlung einzelner Katalysatorpartikel während der Tandemkatalyse.

Keywords

Identical Location, Transmissionselektronenmikroskopie, Nanoelektrode, Nitrat-Reduktionsreaktion, Single-Entity-Elektrochemie, Tandem-Katalyse

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
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4
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