Wang Qiyou, Cai Chao, Dai Minyang, Fu Junwei, Zhang Xiaodong, Li Huangjingwei, Zhang Hang, Chen Kejun, Lin Yiyang, Li Hongmei, Hu Junhua, Miyauchi Masahiro, Liu Min
Shenzhen Research Institute School of Physics and Electronics Central South University Changsha 410083 Hunan P. R. China.
College of Materials Science and Engineering Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Changsha 410082 Hunan P. R. China.
Small Sci. 2020 Dec 16;1(2):2000028. doi: 10.1002/smsc.202000028. eCollection 2021 Feb.
Excessive consumption of fossil fuels gives rise to the increasing emission of carbon dioxide (CO) in the atmosphere and furthers the ecocrisis. Electrochemical CO reduction (ECR) has both functions of dwindling greenhouse gas concentration and converting it into valuable products. Due to the intrinsic chemical inertness of CO molecules, the study on efficient and low-cost catalysts has attracted much attention. Recently isolated atoms, dispersed in stable support, play an important role in decreasing energy barriers of intermediate steps and obtaining target products with high activity and selectivity for ECR. The effective regulation of central atoms or coordination environment is significant to realize the desired performances of ECR with a high efficiency and selectivity. Hence, a comprehensive summary about strategies for improving the performance of ECR on single atom catalysts (SACs) is necessary. Herein, the SACs on various supports are introduced, the methods to design stable SACs are discussed, and the strategies for tuning the performance of ECR on SACs are summarized. The localized environment manipulation is widely used for high-performance SACs design, including regulating central atoms and coordination environment. Finally, the perspectives are discussed to shed light on the rational design of intriguing SACs for ECR.
化石燃料的过度消耗导致大气中二氧化碳（CO）排放量不断增加，加剧了生态危机。电化学二氧化碳还原（ECR）具有降低温室气体浓度并将其转化为有价值产品的双重功能。由于CO分子固有的化学惰性，高效低成本催化剂的研究备受关注。最近，分散在稳定载体中的孤立原子在降低中间步骤的能量壁垒以及以高活性和选择性获得ECR目标产物方面发挥着重要作用。有效调控中心原子或配位环境对于高效、高选择性地实现ECR的理想性能具有重要意义。因此，有必要对提高单原子催化剂（SACs）上ECR性能的策略进行全面总结。本文介绍了各种载体上的SACs，讨论了设计稳定SACs的方法，并总结了调节SACs上ECR性能的策略。局部环境调控被广泛用于高性能SACs的设计，包括调控中心原子和配位环境。最后，对有趣的用于ECR的SACs的合理设计进行了展望。
