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Electrocatalytic reduction of carbon dioxide: opportunities with heterogeneous molecular catalysts
Energy & Environmental Science ( IF 32.5 ) Pub Date : 2019/12/24 , DOI: 10.1039/c9ee03660a
Libo Sun 1, 2, 3, 4, 5 , Vikas Reddu 1, 2, 3, 4 , Adrian C. Fisher 4, 5, 6, 7, 8 , Xin Wang 1, 2, 3, 4, 5
Affiliation  

Electrocatalytic CO2 reduction by heterogeneous molecular catalysts is emerging as an important area for CO2 utilization. Unlike commonly used solid heterogeneous catalysts, molecular catalysts possess well-defined structure, which allows the establishment of a precise structural model for better understanding of the CO2 reduction mechanism. The easy modification of molecular catalysts with designated functional fragments through organic synthesis skills also facilitates the development of novel and efficient molecular catalysts. The direct use of molecular catalysts in the homogeneous phase suffers from poor solubility in some common solvents, low utilization and difficulty in recycling. Heterogeneous immobilization of molecular catalysts onto a substrate can potentially solve these problems. This review summarizes the methods that have been developed so far for heterogeneous immobilization of homogeneous molecular catalysts, including covalent/non-covalent bonding, and assembling the molecular catalysts into a periodic skeleton. Challenges and factors affecting the activities of such catalysts in electrochemical CO2 reduction are also discussed.

中文翻译:

电催化还原二氧化碳:非均相分子催化剂的机会

通过非均相分子催化剂进行的电催化CO 2还原正在成为CO 2利用的重要领域。与常用的固体非均相催化剂不同,分子催化剂具有定义明确的结构,可以建立精确的结构模型以更好地了解CO 2减少机制。通过有机合成技术轻松修饰具有指定功能片段的分子催化剂,也促进了新型高效分子催化剂的开发。在均相中直接使用分子催化剂的缺点是在某些常用溶剂中的溶解性差,利用率低和难以回收。分子催化剂的不均匀固定到基材上可以潜在地解决这些问题。这篇综述总结了迄今为止为均相分子催化剂的非均相固定所开发的方法,包括共价/非共价键合,以及将分子催化剂组装成周期性骨架。挑战和影响此类催化剂在电化学CO 2中活性的因素 减少也进行了讨论。
更新日期:2020-02-19
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