Cited by 279CO2 Reduction Techniques and CatalystsIonic liquids properties and applicationsCarbon dioxide utilization in catalysis

Switching the Reaction Course of Electrochemical CO 2 Reduction with Ionic Liquids

Sun, Liyuan, Ramesha, Ganganahalli K., Kamat, Prashant V., Brennecke, Joan F.·2014·Langmuir

Abstract

The ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]) offers new ways to modulate the electrochemical reduction of carbon dioxide. [emim][Tf2N], when present as the supporting electrolyte in acetonitrile, decreases the reduction overpotential at a Pb electrode by 0.18 V as compared to tetraethylammonium perchlorate as the supporting electrolyte. More interestingly, the ionic liquid shifts the reaction course during the electrochemical reduction of carbon dioxide by promoting the formation of carbon monoxide instead of oxalate anion. With increasing concentration of [emim][Tf2N], a carboxylate species with reduced CO2 covalently bonded to the imidazolium ring is formed along with carbon monoxide. The results highlight the catalytic effects of the medium in modulating the CO2 reduction products.

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Crossref · 10.1021/la5009076

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Authors
Sun, L., Ramesha, G. K., Kamat, P. V., & Brennecke, J. F.
Affiliations
University of Notre Dame (US)
Corresponding author
  • Kamat, Prashant V.
  • Brennecke, Joan F.
Venue
Langmuir
Published
2014-05-22
Volume
30
Issue
21
Pages
6302-6308
ISSN
  • 0743-7463 (ISSN-L)
  • 1520-5827
OpenAlex
W2332861710
Cited by
279
References
39
Citations by year
2026: 11 · 2025: 15 · 2024: 32 · 2023: 22 · 2022: 29 · 2021: 28 · 2020: 33 · 2019: 27 · 2018: 15 · 2017: 14 · 2016: 28 · 2015: 22 · 2014: 3
FWCI
7.37
Type
journal article
Language
en
Open access
closed
Locations
  • Langmuir (publishedVersion)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Chemical Engineering › Catalysis › Ionic liquids properties and applications
  • Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Carbon dioxide utilization in catalysis
Keywords
electrochemical CO2 reduction, ionic liquids, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, supporting electrolyte, carbon monoxide production, oxalate anion, lead electrode, acetonitrile, tetraethylammonium perchlorate

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