Institute for Sustainable Energy, College of Sciences, Shanghai University, Shangda Road 99, Baoshan, Shanghai 200444, China.
Dalton Trans. 2023 Apr 25;52(16):5277-5286. doi: 10.1039/d3dt00598d.
The electrochemical reduction of CO (ERCO) into economically valuable chemicals is one of the most promising ways to achieve carbon neutrality. Perovskite materials have shown potential applications in high-temperature catalysis and photocatalysis due to their unique structure, but their catalytic performance during the aqueous ERCO has rarely been investigated. In this study, we developed an efficient YbBiO perovskite catalyst (YBO@800) for CO conversion to formate, with a maximum faradaic efficiency of 98.3% at -0.9 V, as well as a considerable faradaic efficiency (>90%) over a wide potential range (from -0.8 to -1.2 V). Further analyses demonstrated that the structural evolution of YBO@800 occurred during the ERCO process, and the subsequent construction of the Bi/YbBiO heterostructure played a significant role in optimizing the rate-determining step of the ERCO. This work inspires the development of perovskite catalysts for the ERCO and provides insight into the influence of the surface reconstruction of catalysts on their electrochemical performance.
电化学还原 CO（ERCO）为有经济价值的化学品是实现碳中和最有前途的方法之一。钙钛矿材料由于其独特的结构，在高温催化和光催化方面显示出潜在的应用，但它们在水相 ERCO 中的催化性能很少被研究。在这项研究中，我们开发了一种高效的 YbBiO 钙钛矿催化剂（YBO@800），用于将 CO 转化为甲酸盐，在 -0.9 V 时的最大法拉第效率为 98.3%，在很宽的电位范围内（从 -0.8 到 -1.2 V）具有相当高的法拉第效率（>90%）。进一步的分析表明，YBO@800 在 ERCO 过程中发生了结构演变，随后构建的 Bi/YbBiO 异质结构在优化 ERCO 的速率决定步骤方面发挥了重要作用。这项工作激发了对 ERCO 用钙钛矿催化剂的开发，并深入了解了催化剂表面重构对其电化学性能的影响。
