铜基催化剂在电还原二氧化碳领域的应用研究

Application of Cu-based catalysts in the electroreduction of carbon dioxide

为了实现碳达峰碳中和的国家战略,利用可再生能源发电将二氧化碳电催化转化为化学品再利用,这引起了科学界的广泛关注.铜基催化剂可将二氧化碳电还原为高附加值的多碳产物,但仍需研究其催化机理来提高催化产物的选择性和催化效率.根据铜的状态可将铜基催化剂分为单原子铜基催化剂、定向晶面铜基催化剂、氧化态铜基催化剂和铜合金/复合催化剂.本文简要介绍了以上4类铜基催化剂的常见制备方法、结构特点、电催化还原二氧化碳的效果和可能的催化机理.

To achieve the national strategy of carbon neutralization,the electroreduction of carbon dioxide into usable reagents via renewable energy has caused widespread concern in the scientific community.Cubased electrocatalysts can reduce carbon dioxide to high value-added multi carbon products,but the catalytic mechanism still needs to be studied to improve its selectivity and efficiency.Depending on the state of the Cu,Cu-based catalysts can be divided into Cu alloy/composite catalysts,single-atom,oriented crystalline,and oxidized Cu-based catalysts.This paper introduced the common preparation methods,structural characteristics,effect of electro catalytic reduction of carbon dioxide,and possible catalytic mechanism of the four types of Cu-based catalysts mentioned above.