biostudies-literatureHerranz DComunidad de Madrid4070https://www.ebi.ac.uk/biostudies/studies/S-EPMC12429331biostudies-literatureUnknown18(17)The electrochemical reduction in CO₂ (CO2RR) to syngas and value-added hydrocarbons offers a promising route for sustainable CO₂ utilization. This work develops tuneable Cu-Sn bimetallic catalysts via electrodeposition, optimized for CO2RR in a zero-gap flow cell fed with CO₂-saturated KHCO₃ solution, a configuration closer to industrial scalability than conventional H-cells. By varying electrodeposition parameters (pH, surfactant DTAB, and metal precursors), we engineered catalysts with distinct selectivity profiles: Cu-Sn(B), modified with DTAB, achieved 50% Faradaic efficiency (FE) to CO at -2.2 V and -50 mA·cm^-2, outperforming Ag-based systems that require higher overpotentials. Meanwhile, Cu-Sn(A) favoured C₂H₄ (35% FE at -100 mA·cm^-2), and Cu-Sn(C) shifted selectivity to CH₄ (26% FE), demonstrating product tunability. The catalysts' performance stems from synergistic Cu-Sn interactions and DTAB-induced morphological control, as revealed by SEM/EDX and electrochemical analysis. Notably, all systems operated at lower voltages than literature benchmarks while maintaining moderate CO₂ utilization (32-49% outlet). This study highlights the potential of electrodeposited Cu-Sn catalysts for energy-efficient CO2RR, bridging the gap between fundamental research and industrial application in syngas and hydrocarbon production.Materials (Basel, Switzerland)Modified Cu-Sn Catalysts Enhance CO2RR Towards Syngas Generation.PMC12429331SI4/PJI/2024-00168Rodriguez MOcon PHerranz DMaroto AAviles Moreno JRfalseModified Cu-Sn Catalysts Enhance CO2RR Towards Syngas Generation.The electrochemical reduction in CO₂ (CO2RR) to syngas and value-added hydrocarbons offers a promising route for sustainable CO₂ utilization. This work develops tuneable Cu-Sn bimetallic catalysts via electrodeposition, optimized for CO2RR in a zero-gap flow cell fed with CO₂-saturated KHCO₃ solution, a configuration closer to industrial scalability than conventional H-cells. By varying electrodeposition parameters (pH, surfactant DTAB, and metal precursors), we engineered catalysts with distinct selectivity profiles: Cu-Sn(B), modified with DTAB, achieved 50% Faradaic efficiency (FE) to CO at -2.2 V and -50 mA·cm^-2, outperforming Ag-based systems that require higher overpotentials. Meanwhile, Cu-Sn(A) favoured C₂H₄ (35% FE at -100 mA·cm^-2), and Cu-Sn(C) shifted selectivity to CH₄ (26% FE), demonstrating product tunability. The catalysts' performance stems from synergistic Cu-Sn interactions and DTAB-induced morphological control, as revealed by SEM/EDX and electrochemical analysis. Notably, all systems operated at lower voltages than literature benchmarks while maintaining moderate CO₂ utilization (32-49% outlet). This study highlights the potential of electrodeposited Cu-Sn catalysts for energy-efficient CO2RR, bridging the gap between fundamental research and industrial application in syngas and hydrocarbon production.2025-01-01T00:00:00Z2025 Aug2026-04-08T19:16:34.557Z2026-04-08T12:11:08.218ZS-EPMC124293314094249510.3390/ma18174070