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Probing CO₂ Reduction Pathways for Copper Catalysis Using an Ionic Liquid as a Chemical Trapping Agent

Zhang, Gui‐Rong ; Straub, Sascha‐Dominic ; Shen, Liu‐Liu ; Hermans, Yannick ; Schmatz, Patrick ; Reichert, Andreas M. ; Hofmann, Jan P. ; Katsounaros, Ioannis ; Etzold, Bastian J. M. (2021)
Probing CO₂ Reduction Pathways for Copper Catalysis Using an Ionic Liquid as a Chemical Trapping Agent.
In: Angewandte Chemie International Edition, 2020, 59 (41)
doi: 10.26083/tuprints-00019357
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Item Type: Article
Type of entry: Secondary publication
Title: Probing CO₂ Reduction Pathways for Copper Catalysis Using an Ionic Liquid as a Chemical Trapping Agent
Language: English
Date: 2021
Place of Publication: Darmstadt
Year of primary publication: 2020
Publisher: Wiley
Journal or Publication Title: Angewandte Chemie International Edition
Volume of the journal: 59
Issue Number: 41
DOI: 10.26083/tuprints-00019357
Corresponding Links:
Origin: Secondary publication service
Abstract:

The key to fully leveraging the potential of the electrochemical CO₂ reduction reaction (CO2RR) to achieve a sustainable solar-power-based economy is the developmentof high-performance electrocatalysts. The development process relies heavily on trial and error methods due to poormechanistic understanding of the reaction. Demonstrated here is that ionic liquids (ILs) can be employed as achemical trapping agent to probe CO2RR mechanistic pathways. This method is implemented by introducing a small amount of an IL([BMIm][NTf₂]) to a copper foam catalyst, on which a wide range of CO2RR products,including formate, CO, alcohols, and hydrocarbons, can be produced. The IL can selectively suppress the formation of ethylene, ethanol and n-propanol while having little impact on others. Thus, reaction networks leading to various products can be disentangled. The results shed new light on the mechanistic understanding of the CO2RR, and provide guidelines for modulating the CO2RR properties. Chemical trapping using an IL adds to the toolbox to deduce the mechanistic understanding of electrocatalysis and could be applied to other reactions as well.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-193578
Classification DDC: 500 Science and mathematics > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Surface Science
07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie I
Date Deposited: 26 Aug 2021 12:19
Last Modified: 21 Nov 2022 07:11
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19357
PPN: 501785604
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