Abstract
Photoinduced water oxidation to molecular oxygen takes place in systems made of [Ru(bpy)3]2+ (bpy = 2,2'-bipyridine) as the photosensitizer, [Co4O4(O2CMe)4(py)4] (py = pyridine) as the molecular catalyst and Na2S2O8 as the sacrificial electron acceptor. The photochemical quantum yield of the process reaches the outstanding value of 30% and depends on pH and catalyst concentration. Transient absorption spectroscopy experiments aimed to clarify the first events of the photocatalytic process are also reported.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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2,2'-Dipyridyl / chemistry
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Catalysis
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Cobalt / chemistry
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Cobalt / metabolism
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Coordination Complexes / chemistry
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Coordination Complexes / metabolism
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Electrons
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Hydrogen-Ion Concentration
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Kinetics
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Light
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Oxidation-Reduction / radiation effects
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Oxygen / chemistry*
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Oxygen / metabolism
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Photochemistry*
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Photolysis / radiation effects
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Photons*
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Water / chemistry*
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Water / metabolism
Substances
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Coordination Complexes
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Water
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Cobalt
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2,2'-Dipyridyl
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Oxygen