框架化学在电化学还原二氧化碳中的应用（英文）

框架化学在电化学还原二氧化碳中的应用（英文）The framework chemistry has attracted significant attention in the field of el

框架化学在电化学还原二氧化碳中的应用（英文） The framework chemistry has attracted significant attention in the field of electrochemical reduction of carbon dioxide (CO2) owing to its exceptional features such as high surface area, surface defect engineering, and unique electron transport pathways. The precise control over the chemical composition and morphology of the frameworks offers numerous benefits to enhance the catalytic activity and selectivity of CO2 reduction products. In this article, we discuss the recent advancements in the utilization of framework chemistry in electrochemical CO2 reduction, including the active site engineering of metal-organic frameworks (MOFs), porous organic frameworks (POFs), and covalent organic frameworks (COFs). Metal-organic frameworks (MOFs) have emerged as apotential candidate for electrochemical CO2 reduction since their large surface areas and tunable chemical compositions offer an excellent platform for active site engineering. The functionalization of MOFs with metal or metal oxide nanoparticles not only enhances their catalytic activity towards CO2 reduction but also allows for the selective formation of specific product species. For example, incorporating Fe and Ni nanoparticles into aMIL-101 structure increased the selectivity of CO2 reduction to formic acid and CO, respectively. Besides, the doping of MOFs with heteroatoms such as N, S, or Palso plays avital role in catalysis, as it can modulate the charge distribution and electron transfer of the framework. Porous organic frameworks (POFs) are another class of frameworks that are widely explored in electrochemical CO2 reduction since their tunable pore sizes and structures can facilitate selective gas diffusion and enhance the surface area for maximum adsorption of CO2. POFs can also be functionalized by incorporating catalytic groups such as transition metals and metal oxides to enhance catalytic activity. For example, acopper-based POF showed exceptional electrocatalytic performance towards CO2 reduction to formate, with aFaradaic efficiency of around 95%. Covalent organic frameworks (COFs) have also been investigated as an effective platform for the electrochemical reduction of CO2. COFs possess well-defined pore structures and surface areas, which provide excellent ion transport and facilitate dissolved CO2 access to catalytic sites. Moreover, their exceptional structural robustness and stability offer long-term electrochemical stability for CO2 reduction. In particular,