In Situ Infrared Spectroscopic Evidence of Enhanced Electrochemical CO 2 Reduction and C–C Coupling on Oxide-Derived Copper
Hong Kong University of Science and Technology · Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution · +1 more institution
Abstract
The reaction mechanism of CO2 electroreduction on oxide-derived copper has not yet been unraveled even though high C2+ Faradaic efficiencies are commonly observed on these surfaces. In this study, we aim to explore the effects of copper anodization on the adsorption of various CO2RR intermediates using in situ surface-enhanced infrared absorption spectroscopy (SEIRAS) on metallic and mildly anodized copper thin films. The in situ SEIRAS results show that the preoxidation process can significantly improve the overall CO2 reduction activity by (1) enhancing CO2 activation, (2) increasing CO uptake, and (3) promoting C–C coupling. First, the strong *COO– redshift indicates that the preoxidation process…
Citation impact
- FWCI
- 25.76
- Percentile
- 100%
- References
- 92
Authors
11- EPErnest Pahuyo Delmo
Hong Kong University of Science and Technology
- YWYian Wang
Hong Kong University of Science and Technology
- YSYihua Song
Hong Kong University of Science and Technology
- SZShangqian Zhu
Hong Kong University of Science and Technology
- HZHaichuan Zhang
Hong Kong University of Science and Technology
Topics & keywords
- Chemistry
- Copper
- Electrochemistry
- Infrared
- Coupling (piping)
- In situ
- Oxide
- Chemical reduction