Electrocatalytic Water Oxidation by a Tetranuclear Copper Complex
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- 作者：Dr. Vijayendran K. K. Praneeth ; Dr. Mio Kondo ; Dr. Pei Meng Woi ; Dr. Masaya Okamura and Prof. Dr. Shigeyuki Masaoka
- 刊名：ChemPlusChem
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：81
- 期：10
- 页码：1123-1128
- 全文大小：1003K
- ISSN：2192-6506
文摘
A novel tetranuclear copper-based water oxidation catalyst was designed and synthesized by using a new multinucleating ligand containing two proton dissociation sites, 1,3-bis(6-hydroxy-2-pyridyl)-1H-pyrazole. The copper complex showed electrocatalytic activity for water oxidation reactions under aqueous basic conditions (pH 12.5) with an overpotential of approximately 500 mV. UV/Vis absorption and energy-dispersive X-ray (EDX) spectroscopic techniques coupled with electrochemical analyses of the catalyst system strongly suggest that the tetranuclear copper complex works as a homogeneous system under the conditions used. The results described here demonstrate the utility of a discrete tetranuclear copper complex in water oxidation reactions.