Ren Dan, Gao Jing, Zakeeruddin Shaik M, Grätzel Michael
Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne.
Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne;, Email:
Chimia (Aarau). 2019 Nov 1;73(11):928-935. doi: 10.2533/chimia.2019.928.
Electrochemical reduction of carbon dioxide, using the electricity generated from renewable energy sources, has the potential of rendering a carbon-neutral energy economy. Developing selective, efficient and robust electrocatalysts is the key step towards establishing this promising technology. While different nanostructures of Cu have been extensively studied for the formation of C-C₃ alcohols and hydrocarbons, Cu-based bimetallic catalysts showed better activity compared to monometallic Cu. In this review, we will first summarize recent advances in designing Cu-X bimetallic catalysts. We categorized the bimetallic catalysts into different groups based on the CO₂ reduction activities of the ' X ' metal, including hydrogen-producing metals, formate-producing metals and CO-producing metals. The key factors in determining the selectivity are discussed. Additionally, representative examples of Cu-free bimetallic catalysts, with appreciable selectivity towards hydrocarbons/alcohols, will also be presented. We will conclude this review with challenges and promising research directions.
利用可再生能源产生的电力对二氧化碳进行电化学还原，有望实现碳中性能源经济。开发选择性高、效率高且稳定性好的电催化剂是建立这一有前景技术的关键步骤。虽然已对不同纳米结构的铜用于生成C-C₃醇和碳氢化合物进行了广泛研究，但与单金属铜相比，铜基双金属催化剂表现出更好的活性。在本综述中，我们将首先总结设计铜- X双金属催化剂的最新进展。我们根据 “X” 金属的二氧化碳还原活性将双金属催化剂分为不同类别，包括产氢金属、产甲酸金属和产一氧化碳金属。讨论了决定选择性的关键因素。此外，还将介绍对碳氢化合物/醇具有可观选择性的无铜双金属催化剂的代表性实例。我们将以挑战和有前景的研究方向来结束本综述。
