Publications
Detailed Information
Bicarbonate Is Not a General Acid in Au-Catalyzed CO2 Electroreduction
Cited 192 time in
Web of Science
Cited 195 time in Scopus
- Authors
- Issue Date
- 2017-11
- Publisher
- American Chemical Society
- Citation
- Journal of the American Chemical Society, Vol.139 No.47, pp.17109-17113
- Abstract
- We show that bicarbonate is neither a general acid nor a reaction partner in the rate-limiting step of electrochemical CO2 reduction catalysis mediated by planar polycrystalline Au surfaces. We formulate microldnetic models and propose diagnostic criteria to distinguish the role of bicarbonate. Comparing these models with the observed zero-order dependence in bicarbonate and simulated interfacial concentration gradients, we conclude that bicarbonate is not a general acid cocatalyst. Instead, it acts as a viable proton donor past the rate-limiting step and a sluggish buffer that maintains the bulk but not local pH in CO2-saturated aqueous electrolytes.
- ISSN
- 0002-7863
- Files in This Item:
- There are no files associated with this item.
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.