Boosting Surface Coverage of CO Intermediates through Multimetallic Interface Interactions for Efficient CO2 Electrochemical Reduction
Given the inherent challenges of the CO2 electroreduction (CO2ER) reaction, solely from CO2 and H2O, it is desirable to develop selective product formation pathways. This can be achieved by designing multimetallic nanocomposites that provide optimal CO coverage, allowing for tunability in the product formation. In this work, Ag and Zn codoped-SrTiO3 (ZAST) composite immobilized carbon black (CB)-modified GCE working electrode (ZAST@CB/GCE) was developed for the electrochemical conversion of CO2 to multicarbon products. The complete reaction was carried out in a CO2-saturated aqueous system of 0.5 M KHCO3 electrolyte. A potential-dependent product selectivity was suggested based on the NMR results, wherein raising the potential value enhanced the formation of liquid products such as acetone and alcohols while suppressing competitive HER. The total Faradaic efficiency for liquid products reached an impressive 97% at a potential of ?0.6 V vs. RHE. This represents a significant advancement in acetone production pathways and valorization of CO2ER technology. 2025 American Chemical Society.
Babu, Ann Mariella; Gandhi, Mansi; Amreen, Khairunnisa; Varghese, Anitha
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https://doi.org/10.1021/acs.langmuir.4c03226 https://www.scopus.com/pages/publications/85216467234?origin=resultslist
Babu A.M., CHRIST University, Karnataka, Bangalore, 560029, India; Gandhi M., CHRIST University, Karnataka, Bangalore, 560029, India; Amreen K., St. Anns College for women-Mehdipatnam, Telangana, Hyderabad, 500028, India; Varghese A., CHRIST University, Karnataka, Bangalore, 560029, India