Mass transfer, kinetics, and mechanism of electrochemical CO₂ reduction have been explored on a model mesostructure of highly-ordered copper inverse opal (Cu-IO), which was fabricated by Cu electrodeposition in a hexagonally-closed packed polystyrene template. As the number of Cu-IO layers increases, the formation of C₂ products such as C₂H₄ and C₂H₅OH was significantly enhanced at reduced overpotentials (∼200 mV) compared to a planar Cu electrode. At the thickest layer, we observe for the first time the formation of acetylene (C₂H₂), which can be generated through a kinetically slow reaction pathway and be a key descriptor in the unveiling of the CC coupling reaction mechanism. Based on our experimental observation, a plausible reaction pathway in Cu mesostructures is rationalized.

在高阶铜反蛋白石（Cu-10）的模型介观结构上，探索了传质，动力学和电化学还原CO _2的机理，该模型是通过在六边形封闭的填充聚苯乙烯模板中电沉积Cu制成的。随着Cu-IO层数的增加，与平面Cu电极相比，在降低的过电势（约200 mV）下，C ₂产物（如C ₂ H ₄和C ₂ H ₅ OH）的形成显着增强。在最厚的一层，我们第一次观察到乙炔（C ₂ H ₂）可以通过动力学缓慢的反应途径生成，并且是C C偶联反应机理揭示中的关键描述词。根据我们的实验观察，合理化了铜介观结构中的合理反应途径。