Size Effects of Highly Dispersed Bismuth Nanoparticles on Electrocatalytic Reduction of Carbon Dioxide to Formic Acid

作者：Guangri Jia, Ying Wang, Mingzi Sun, Hao Zhang, Lejing Li, Yanbiao Shi, Lizhi Zhang, Xiaoqiang Cui, Tsz Woon Benedict Lo, Bolong Huang, Jimmy C. Yu · 发表于：Journal of the American Chemical Society · 年份：2023 · DOI：10.1021/jacs.3c04727 · 被引用次数：199 · 研究领域：CO2 Reduction Techniques and Catalysts、Carbon dioxide utilization in catalysis、Ionic liquids properties and applications

High Resolution Image Download MS PowerPoint Slide Electrocatalytic reduction of carbon dioxide into value-added chemical fuels is a promising way to achieve carbon neutrality. Bismuth-based materials have been considered as favorable electrocatalysts for converting carbon dioxide to formic acid. Moreover, size-dependent catalysis offers significant advantages in catalyzed heterogeneous chemical processes. However, the size effects of bismuth nanoparticles on formic acid production have not been fully explored. Here, we prepared Bi nanoparticles uniformly supported on porous TiO 2 substrate electrocatalytic materials by in situ segregation of the Bi element from Bi 4 Ti 3 O 12 . The Bi-TiO 2 electrocatalyst with Bi nanoparticles of 2.83 nm displays a Faradaic efficiency of greater than 90% over a wide potential range of 400 mV. Theoretical calculations have also demonstrated subtle electronic structural evolutions induced by the size variations of Bi nanoparticles, where the 2.83 nm Bi nanoparticles display the most active p-band and d-band centers to guarantee high electroactivity toward CO 2 RR.