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Lateral Adsorbate Interactions Inhibit HCOO- While Promoting CO Selectivity for CO2 Electrocatalysis on Ag

preprint
submitted on 09.10.2018 and posted on 10.10.2018 by Divya Bohra, Isis Ledezma-Yanez, Guanna Li, Wiebren De Jong, Evgeny A. Pidko, Wilson A. Smith

The analysis presented in this manuscript helps bridge an important fundamental discrepancy between the existing theoretical and experimental knowledge regarding the performance of Ag catalysts for CO2 electrochemical reduction (CO2ER). The results demonstrate how the intermediate species *OCHO is formed readily en-route the HCOOpathway and plays a decisive role in determining selectivity of a predominantly CO producing catalyst such as Ag. Our theoretical and experimental approach develops a better understanding of the nature of competition as well as the complex interactions between the reaction intermediates leading to CO, HCOO and H2 during CO2ER.


Details of computational and experimental methods are present in the Supporting Information provided.



Funding

NWO support via the VIDI grant (WAS and DB). NWO support via VENI grant (GL).

History

Email Address of Submitting Author

D.Bohra@tudelft.nl

Institution

Delft University of Technology

Country

The Netherlands

ORCID For Submitting Author

0000-0002-5800-6056

Declaration of Conflict of Interest

None

Version Notes

pre-peer-review version

Licence

Exports