Wang Xuanyu, Zou Yanhong, Zhang Yanxing, Marchetti Barbara, Liu Yuyu, Yi Jin, Zhou Xiao-Dong, Zhang Jiujun
Institute for Sustainable Energy, College of Sciences, Shanghai University, Shanghai 200444, China.
School of Physics, Henan Normal University, Xinxiang, Henan 453007, China.
J Colloid Interface Sci. 2022 Nov 15;626:836-847. doi: 10.1016/j.jcis.2022.07.008. Epub 2022 Jul 4.
Electrochemical reduction of carbon dioxide (ERCO) allows for the conversion of CO to value-added low-carbon chemicals. Catalysts are indispensable for an efficient ERCO process. In this work, a Sn-based metal-organic framework (Sn-MOF) was synthesized as an electrocatalyst for the conversion of CO to formate (HCOO). Such a Sn-MOF electrocatalyst exhibits an outstanding performance with a formate selectivity up to 92% and a current density of 23.2 mA cm at -1.2 V. Density functional theory calculations were used to probe and analyze the catalytic ERCO mechanism. This work shows the possibility to achieve a high efficiency of a pure Sn-MOF in catalyzing ERCO directly. In addition, this work provides insights into the design and synthesis of highly efficient ERCO electrocatalysts for practical applications.
二氧化碳的电化学还原（ERCO）能够将CO转化为增值低碳化学品。催化剂对于高效的ERCO过程不可或缺。在这项工作中，合成了一种锡基金属有机框架（Sn-MOF）作为将CO转化为甲酸盐（HCOO）的电催化剂。这种Sn-MOF电催化剂表现出优异的性能，在-1.2 V时甲酸盐选择性高达92%，电流密度为23.2 mA cm 。采用密度泛函理论计算来探究和分析催化ERCO机理。这项工作表明了直接实现纯Sn-MOF在催化ERCO方面高效性的可能性。此外，这项工作为实际应用中高效ERCO电催化剂的设计与合成提供了思路。
