Improving photosensitization for photochemical CO2-to-CO conversion
Improving photosensitization for photochemical CO2-to-CO conversion作者机构：MOE International Joint Laboratory of Materials MicrostructureInstitute for New Energy Materials and Low Carbon Technologies School of Materials Science and EngineeringTianjin University of Technology State Key Laboratory of Fine ChemicalsSchool of Chemical Engineering Dalian University of Technology
出 版 物：《National Science Review》 (国家科学评论(英文版))
年 卷 期：2020年第7卷第9期
页 面：1459-1467页
核心收录：
学科分类：081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学]
基 金：supported by the National Key R&D Program of China (2017YFA0700104) the National Natural Science Foundation of China (21703155,21722104,21671032) the Natural Science Foundation of Tianjin City of China (18JCQNJC76500,18JCJQJC47700,17JCQNJC05100)
主 题：photosensitization photocatalysis CO2 reduction excited state Ru(II) complexes
摘 要：Inspired by nature, improving photosensitization represents a vital direction for the development of artificial photosynthesis. The sensitization ability of photosensitizers(PSs) reflects in their electron-transfer ability, which highly depends on their excited-state lifetime and redox potential. Herein, for the first time,we put forward a facile strategy to improve sensitizing ability via finely tuning the excited state of Ru(Ⅱ)-PSs(Ru-1–Ru-4) for efficient CO2reduction. Remarkably, [Ru(Phen)2(3-pyrenyl Phen)]2+(Ru-3) exhibits the best sensitizing ability among Ru-1–Ru-4, over 17 times higher than that of typical Ru(Phen)32+. It can efficiently sensitize a dinuclear cobalt catalyst for CO2-to-CO conversion with a maximum turnover number of 66 480. Systematic investigations demonstrate that its long-lived excited state and suitable redox driving force greatly contributed to this superior sensitizing ability. This work provides a new insight into dramatically boosting photocatalytic CO2reduction via improving photosensitization.
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