51094-54-3Relevant academic research and scientific papers
A Bio-inspired Cu4O4 Cubane: Effective Molecular Catalysts for Electrocatalytic Water Oxidation in Aqueous Solution
Jiang, Xin,Li, Jian,Yang, Bing,Wei, Xiang-Zhu,Dong, Bo-Wei,Kao, Yi,Huang, Mao-Yong,Tung, Chen-Ho,Wu, Li-Zhu
, p. 7850 - 7854 (2018)
Inspired by the cubic Mn4CaO5 cluster of natural oxygen-evolving complex in Photosystem II, tetrametallic molecular water oxidation catalysts, especially M4O4 cubane-like clusters (M=transition metals), have aroused great interest in developing highly active and robust catalysts for water oxidation. Among these M4O4 clusters, however, copper-based molecular catalysts are poorly understood. Now, bio-inspired Cu4O4 cubanes are presented as effective molecular catalysts for electrocatalytic water oxidation in aqueous solution (pH 12). The exceptional catalytic activity is manifested with a turnover frequency (TOF) of 267 s?1 for [(LGly-Cu)4] at 1.70 V and 105 s?1 for [(LGlu-Cu)4] at 1.56 V. Electrochemical and spectroscopic study revealed a successive two-electron transfer process in the Cu4O4 cubanes to form high-valent CuIII and CuIIIO. intermediates during the catalysis.
