Journal
CHEMISTRY-SWITZERLAND
Volume 3, Issue 3, Pages 687-703Publisher
MDPI
DOI: 10.3390/chemistry3030048
Keywords
copper foam; CO2 reduction; electrocatalysis; heterogeneous catalyst; modified electrodes
Categories
Funding
- Welsh European Funding Office (WEFO) through the Welsh Government
- Engineering and Physical Sciences Research Council (EPSRC) through the SUSTAIN Manufacturing Hub [EP/S018107/1, EP/N009525/1]
- European Regional Development Fund (ERDF)
- EPSRC [EP/M028267/1]
- European Regional Development Fund through the Welsh Government [80708]
- Ser Solar project via the Welsh Government
- EPSRC [EP/M028267/1, EP/N009525/1, EP/S018107/1] Funding Source: UKRI
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In this study, a porous copper electrode capable of catalyzing the reduction of carbon dioxide into higher-value products was fabricated and investigated. The morphological and crystal structure of the foams under different conditions were analyzed, along with their performance as a catalyst. Alterations in the morphology, crystallinity and surface composition of the catalyst were found to be conducive to the deactivation of the copper foams after CO2 electrolysis.
The utilization of carbon dioxide is a major incentive for the growing field of carbon capture. Carbon dioxide could be an abundant building block to generate higher-value chemical products. Herein, we fabricated a porous copper electrode capable of catalyzing the reduction of carbon dioxide into higher-value products, such as ethylene, ethanol and propanol. We investigated the formation of the foams under different conditions, not only analyzing their morphological and crystal structure, but also documenting their performance as a catalyst. In particular, we studied the response of the foams to CO2 electrolysis, including the effect of urea as a potential additive to enhance CO2 catalysis. Before electrolysis, the pristine and urea-modified foam copper electrodes consisted of a mixture of cuboctahedra and dendrites. After 35 min of electrolysis, the cuboctahedra and dendrites underwent structural rearrangement affecting catalysis performance. We found that alterations in the morphology, crystallinity and surface composition of the catalyst were conducive to the deactivation of the copper foams.
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