In Situ Reconstruction of Cu–N Coordinated MOFs to Generate Dispersive Cu/Cu2O Nanoclusters for Selective Electroreduction of CO2to C2H4

作者：Chang Liu, Xiang‐Da Zhang, Jian-Mei Huang, Mengxue Guan, Ming Xu, Zhi‐Yuan Gu · 发表于：ACS Catalysis · 年份：2022 · DOI：10.1021/acscatal.2c04275 · 被引用次数：220 · 研究领域：CO2 Reduction Techniques and Catalysts、Ionic liquids properties and applications、Advanced Photocatalysis Techniques

Electrochemical reduction of CO 2 to obtain high-value-added feedstocks is a promising strategy to alleviate the energy crisis. Cu-based catalysts generate multi-carbon products with high activity in the CO 2 reduction reaction (CO 2 RR), although great challenges remain in the selectivity and stability of Cu-based catalysts. Here, highly active Cu/Cu 2 O nanoclusters were produced via in situ electrochemical reconstruction using Cu–N coordinated MOFs as precursors for the highly selective C 2 H 4 synthesis, showing a Faradaic efficiency of 70.2 ± 1.7% toward C 2 H 4 with a partial current density of 12.38 mA·cm –2 at −1.03 V vs RHE in the CO 2 RR. In situ infrared spectroscopy with the observation of *CO*CO and *CO*COH intermediates confirmed the C 2 H 4 formation pathway, while in situ Raman spectroscopy, ex situ XPS, and HRTEM evidenced that the coexisting Cu 2 O and Cu nanoclusters were the active sites. The in situ reconstruction method could be used to synthesize catalysts with high activity and selectivity for CO 2 electroreduction.