期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 10, 页码 4000-4008出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201910614
关键词
artificial photosynthesis; redox-active ligands; Ru-IV=O intermediates; water oxidation
资金
- National Natural Science Foundation of China [219330007, 21661132006]
- Postdoctoral Research Foundation of China [2019M650600]
Water splitting is one of the most promising solutions for storing solar energy in a chemical bond. Water oxidation is still the bottleneck step because of its inherent difficulty and the limited understanding of the O-O bond formation mechanism. Molecular catalysts provide a platform for understanding this process in depth and have received wide attention since the first Ru-based catalyst was reported in 1982. Ru-V=O is considered a key intermediate to initiate the O-O bond formation through either a water nucleophilic attack (WNA) pathway or a bimolecular coupling (I2M) pathway. Herein, we report a Ru-based catalyst that displays water oxidation reactivity with Ru-IV=(O) with the help of a redox-active ligand at pH 7.0. The results of electrochemical studies and DFT calculations disclose that ligand oxidation could significantly improve the reactivity of Ru-IV=O toward water oxidation. Under these conditions, sustained water oxidation catalysis occurs at reasonable rates with low overpotential (ca. 183 mV).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据