Base-enhanced catalytic water oxidation by a carboxylate–bipyridine Ru(II) complex Article Swipe

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Catalysis Carboxylate Chemistry Artificial photosynthesis Redox Water splitting Catalytic oxidation Phosphate buffered saline Base (topology) Ruthenium Photochemistry Inorganic chemistry Stereochemistry Organic chemistry Photocatalysis Mathematical analysis Chromatography Mathematics

Na Song , Javier J. Concepcion , Robert A. Binstead , Jennifer A. Rudd , Aaron K. Vannucci , Christopher J. Dares , Michael K. Coggins , Thomas J. Meyer ·

YOU? · · 2015 · Open Access · · DOI: https://doi.org/10.1073/pnas.1500245112 · OA: W2093879789

Significance Development of rapid, robust water oxidation catalysts remains an essential element in solar water splitting by artificial photosynthesis. We report here dramatic rate enhancements with added buffer bases for a robust Ru(II) polypyridyl catalyst with a calculated half-time for water oxidation of ∼7 μs in 1.0 M phosphate. The results of detailed kinetic studies provide insight into the water oxidation mechanism and an important role for added buffer bases in accelerating water oxidation by concerted atom–proton transfer.