Electroreduction of carbon dioxide to formate using highly efficient bimetallic Sn-Pd aerogels

Electroreduction of carbon dioxide to formate using highly efficient bimetallic Sn-Pd aerogels

Abdinejad, M. (TU Delft ChemE/Materials for Energy Conversion and Storage)
Motlagh, Mozhgan Khorasani (University of Toronto)
Noroozifar, Meissam (University of Toronto)
Kraatz, Heinz Bernhard (University of Toronto)

2022

Electrochemical reduction of carbon dioxide (CO2) to valuable materials is a promising approach to suppress atmospheric CO2 levels. In order to bring this strategy to a commercial scale, the design of efficient, cost-effective, and robust catalysts is essential. Current advances in CO2 conversion technology use bimetallic components that enhance electrocatalysis via the introduction of binding site diversity. In this work, Sn-Pd bimetallic aerogels supported by carbon nanotubes (Sn-Pd/CNT) demonstrate selective electroreduction of CO2 to formate in ambient conditions. Amino substituents were introduced as an additional CO2 capture site (Sn-Pd/CNT-NH2), further enhancing the electrocatalytic activity and resulting in 91% formate selectively and a current density of -39 mA cm-2 at -0.4 V vs. RHE. The results demonstrate the potential of alloying Sn with other earth-abundant metals to promote the electrochemical conversion of CO2 to value-added materials. We believe this study provides valuable insights into the intricate relationship of bimetallic aerogels and shows the potential of the -NH2 group as a facilitator for CO2 capture and conversion that will inspire new forays into the development of competitive catalytic systems.

http://resolver.tudelft.nl/uuid:aa764b2c-38df-4070-8f00-ff26037b047a

https://doi.org/10.1039/d1ma01057c

Materials Advances, 3 (2), 1224-1230

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journal article

© 2022 M. Abdinejad, Mozhgan Khorasani Motlagh, Meissam Noroozifar, Heinz Bernhard Kraatz