A Highly Durable, Self-Photosensitized Mononuclear Ruthenium Catalyst for CO2 Reduction
A Highly Durable, Self-Photosensitized Mononuclear Ruthenium Catalyst for CO2 Reduction
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用于二氧化碳还原的高度耐用、自光敏单核钌催化剂
DOI：
10.1055/a-1709-0280
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发表时间：
2021
期刊：
影响因子：
2
通讯作者：
Morikawa Takeshi
中科院分区：
文献类型：
--
作者：
Jung Jieun;Saito Susumu;Kamada Kenji;Okuwa Hiroko;Wakabayashi Taku;Sekizawa Keita;Sato Shunsuke;Morikawa Takeshi
一种新型的单核钌（Ru）配合物轴承PNNP型四齿配体在这里介绍作为一种自光敏催化剂，用于还原二氧化碳（CO2）。当钌配合物通过与碱的反应进行预活化时，催化剂的诱导期几乎消失，并且在144 h的反应时间内催化剂周转数（TONs）分别达到307和489，对于一氧化碳（CO）和甲酸（HCO2H）。该配合物具有长寿命的双重光敏剂和还原催化剂，由于空间庞大和结构稳健（PNNP）Ru框架。在13CO2气氛下的同位素标记实验表明，CO和HCO2H都是由CO2产生的。
A novel mononuclear ruthenium (Ru) complex bearing a PNNP-type tetradentate ligand is introduced here as a self-photosensitized catalyst for the reduction of carbon dioxide (CO2). When the pre-activation of the Ru complex by reaction with a base was carried out, an induction period of catalyst almost disappeared and the catalyst turnover numbers (TONs) over a reaction time of 144 h reached 307 and 489 for carbon monoxide (CO) and for formic acid (HCO2H), respectively. The complex has a long lifespan as a dual photosensitizer and reduction catalyst, due to the sterically bulky and structurally robust (PNNP)Ru framework. Isotope-labeling experiments under13CO2atmosphere indicate that CO and HCO2H were both produced from CO2.