Investigating the Role of Copper Oxide in Electrochemical CO 2 Reduction in Real Time
Open accessAbstract
Copper oxides have been of considerable interest as electrocatalysts for CO 2 reduction (CO2R) in aqueous electrolytes. However, their role as an active catalyst in reducing the required overpotential and improving the selectivity of reaction compared with that of polycrystalline copper remains controversial. Here, we introduce the use of selected-ion flow tube mass spectrometry, in concert with chronopotentiometry, in situ Raman spectroscopy, and computational modeling, to investigate CO2R on Cu 2 O nanoneedles, Cu 2 O nanocrystals, and Cu 2 O nanoparticles. We show experimentally that the selective formation of gaseous C 2 products (i.e., ethylene) in CO2R is preceded by the reduction of the copper oxide (Cu 2 OR) surface to metallic copper. On the basis of density functional theory modeling, CO2R products are not formed as long as Cu 2 O is present at the surface because Cu 2 OR is kinetically and energetically more favorable than CO2R.
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Liu et al. reported a B- and N-co-doped nanodiamond catalyst, with very high ethanol selectivity (FE of 93.2%) at -1.0 V vs. RHE.
“Liu et al. reported a B-and N-co-doped nanodiamond catalyst,, with very high ethanol selectivity (FE of 93.2 %) at -1.0 V vs. RHE.[119]”
From Electrochemical CO <sub>2</sub> Reduction into Chemical Feedstocks: From Mechanistic Electrocatalysis Models to System Design (2019) · cites this paper as [119]
The combination of B and N co-doping and the balance between the N content and H2 evolution potential were key for achieving high ethanol selectivity.
“The combination of B and N co-doping and the balance between the N content and H2 evolution potential were key for achieving high ethanol selectivity.”
From Electrochemical CO <sub>2</sub> Reduction into Chemical Feedstocks: From Mechanistic Electrocatalysis Models to System Design (2019) · cites this paper as [119]
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- Authors
- Mandal, L., Yang, K. R., Motapothula, M. R., Ren, D., Lobaccaro, P., Patra, A., Sherburne, M., Batista, V. S., Yeo, B. S., Ager, J. W., Martin, J., & Venkatesan, T.
- Affiliations
- National University of Singapore (SG)
- Yale University (US)
- University of California, Berkeley (US)
- Yale Energy Sciences Institute and Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
- Corresponding author
- Ager, Joel W.
- Martin, Jens
- Venkatesan, T.
- ORCID
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-02-13
- Volume
- 10
- Issue
- 10
- Pages
- 8574-8584
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2788054763
- Cited by
- 269
- References
- 71
- Citations by year
- 2026: 20 · 2025: 24 · 2024: 25 · 2023: 33 · 2022: 46 · 2021: 37 · 2020: 47 · 2019: 28 · 2018: 9
- FWCI
- 6.98
- Type
- journal article
- Language
- en
- Open access
- green
- www.osti.gov
- Locations
- ACS Applied Materials & Interfaces (publishedVersion)
- PubMed (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- Funders
- Ministry of Education - Singapore
- National Research Foundation Singapore (R398000086592)
- National University of Singapore (R-143-000-683-112)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
- Keywords
- electrochemical CO2 reduction, copper oxide, Cu2O nanocrystals, Cu2O nanoparticles, ethylene selectivity, C2+ products, reaction kinetics, reaction energetics, selected ion flow tube mass spectrometry, in situ Raman spectroscopy, density functional theory modeling
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