Cited by 269CO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionAdvanced Photocatalysis Techniques

Investigating the Role of Copper Oxide in Electrochemical CO 2 Reduction in Real Time

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Mandal, Lily, Yang, Ke R., Motapothula, Mallikarjuna Rao, Ren, Dan, Lobaccaro, Peter, Patra, Abhijeet, Sherburne, Matthew, Batista, Victor S. +4 more·2018·ACS Applied Materials & Interfaces

Abstract

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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Crossref · 10.1021/acsami.7b15418

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  1. Lum, Y.; Ager, J. W. Stability of Residual Oxides in Oxide-Derived Cu Catalysts for Electrochemical CO 2 Reduction Investigated with 18O Labeling Angew. Chem. Int. Ed. 2018, 57,551 -554.
  2. Ren, X.; Rinke, P.; Scheffler, M. Exploring the random phase approximation: application to CO adsorption. Phys. Rev. B, 2009, 80, 045402 1-8.

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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.
Venue
ACS Applied Materials & Interfaces
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
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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