The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
Poly-Amide Modified Copper Foam Electrodes for Enhanced Electrochemical Reduction of Carbon Dioxide
Abstract
A strategy to modulate the electrocatalytic activity of copper toward CO 2 reduction involving adsorption of acrylamide, acrylic acid, and allylamine polymers is presented. Modification of electrodeposited copper foam with poly(acrylamide) leads to a significant enhancement in faradaic efficiency for ethylene from 13% (unmodified foam) to 26% at −0.96 V vs RHE, whereas methane yield is unaffected. Effects from crystalline phase distribution and copper oxide phases are ruled out as the source of enhancement through XPS and in situ XRD analysis. DFT calculations reveal that poly(acrylamide) adsorbs on the copper surface via the oxygen atom on the carbonyl groups and enhances ethylene formation by (i) charge donation to the copper surface that activates CO for dimerization, (ii) chemical stabilization of the CO dimer (a key intermediate for C 2 products) by hydrogen-bond interactions with the −NH 2 group, and (iii) facilitating the adsorption of CO molecules near the polymer, increasing local surface coverage. Poly(acrylamide) with copper acts as a multipoint binding catalytic system where the interplay between activation and stabilization of intermediates results in enhanced selectivity toward ethylene formation. Modification with poly(acrylic acid) which has a similar structure to poly(acrylamide) also shows some enhancement in activity but is unstable, whereas poly(allylamine) completely suppresses CO 2 reduction in favor of the hydrogen evolution reaction.
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Cites
New insights into the electrochemical reduction of carbon dioxide on metallic copper surfaces
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Cited by
Electrocatalysis for CO 2 conversion: from fundamentals to value-added products
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Electrochemical CO2-to-ethylene conversion on polyamine-incorporated Cu electrodes
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Heterostructured Catalysts for Electrocatalytic and Photocatalytic Carbon Dioxide Reduction
Prabhu, P., Jose, V., & Lee, J. (2020) · Advanced Functional Materials · doi:10.1002/adfm.201910768 · Cited by 432
Highly Selective Reduction of CO2 to C2+ Hydrocarbons at Copper/Polyaniline Interfaces
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Metadata
- Authors
- Ahn, S., Klyukin, K., Wakeham, R. J., Rudd, J. A., Lewis, A. R., Alexander, S., Carla, F., Alexandrov, V., & Andreoli, E.
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-04-03
- Volume
- 8
- Issue
- 5
- Pages
- 4132-4142
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W2795665698
- Cited by
- 230
- References
- 10
- FWCI
- 4.41
- Type
- journal article
- Language
- en
- Open access
- closed
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