Nanostructured Tin Catalysts for Selective Electrochemical Reduction of Carbon Dioxide to Formate

作者：Sheng Zhang, Peng Kang, Thomas J. Meyer · 发表于：Journal of the American Chemical Society · 年份：2014 · DOI：10.1021/ja4113885 · 被引用次数：1160 · 研究领域：CO2 Reduction Techniques and Catalysts、Electrocatalysts for Energy Conversion、Ionic liquids properties and applications

High surface area tin oxide nanocrystals prepared by a facile hydrothermal method are evaluated as electrocatalysts toward CO2 reduction to formate. At these novel nanostructured tin catalysts, CO2 reduction occurs selectively to formate at overpotentials as low as ∼340 mV. In aqueous NaHCO3 solutions, maximum Faradaic efficiencies for formate production of >93% have been reached with high stability and current densities of >10 mA/cm(2) on graphene supports. The notable reactivity toward CO2 reduction achieved here may arise from a compromise between the strength of the interaction between CO2(•-) and the nanoscale tin surface and subsequent kinetic activation toward protonation and further reduction.