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Chemical and Photochemical Water Oxidation Mediated by an Efficient Single-Site Ruthenium Catalyst.

ABSTRACT: Water oxidation is a fundamental step in artificial photosynthesis for solar fuels production. In this study, we report a single-site Ru-based water oxidation catalyst, housing a dicarboxylate-benzimidazole ligand, that mediates both chemical and light-driven oxidation of water efficiently under neutral conditions. The importance of the incorporation of the negatively charged ligand framework is manifested in the low redox potentials of the developed complex, which allows water oxidation to be driven by the mild one-electron oxidant [Ru(bpy)₃ ]³⁺ (bpy=2,2'-bipyridine). Furthermore, combined experimental and DFT studies provide insight into the mechanistic details of the catalytic cycle.

SUBMITTER: Abdel-Magied AF

PROVIDER: S-EPMC6680270 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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Chemical and Photochemical Water Oxidation Mediated by an Efficient Single-Site Ruthenium Catalyst.

Abdel-Magied Ahmed F AF Shatskiy Andrey A Liao Rong-Zhen RZ Laine Tanja M TM Arafa Wael A A WA Siegbahn Per E M PE Kärkäs Markus D MD Åkermark Björn B Johnston Eric V EV

ChemSusChem 20161214 24

Water oxidation is a fundamental step in artificial photosynthesis for solar fuels production. In this study, we report a single-site Ru-based water oxidation catalyst, housing a dicarboxylate-benzimidazole ligand, that mediates both chemical and light-driven oxidation of water efficiently under neutral conditions. The importance of the incorporation of the negatively charged ligand framework is manifested in the low redox potentials of the developed complex, which allows water oxidation to be d ...[more]

PMID: 27966290

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