Engineering Cu modified Sn-based catalysts for enhanced electrochemical carbon dioxide reduction Saira Ajmal Uppsala University, Sweden The rising concentration of atmospheric CO 2 due to anthropogenic emissions is a major contributor to climate change, necessitating innovative strategies for its mitigation. Electrocatalytic CO 2 reduction (CO2RR) into high- value hydrocarbons and fuels offers a sustainable pathway to address this challenge, leveraging existing energy infrastructure and enabling carbon recycling. In our work, we explore the synthesis of CuSn-based catalysts for enhanced CO 2 RR performance. SnO 2 thin films were fabricated via atomic layer deposition (ALD), followed by modification with copper using controlled techniques. The role of Cu in altering the electronic structure and tuning the active sites of Sn-based catalysts. Our Initial results demonstrate that Cu incorporation significantly enhances the selectivity toward C 2 products, indicating its crucial role in facilitating C–C coupling during CO 2 electroreduction. This study might provide new insights into the design of bimetallic electrocatalysts for efficient and selective CO 2 conversion.
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© The Author(s), 2025
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