Journal
CHEMICAL COMMUNICATIONS
Volume 49, Issue 56, Pages 6325-6327Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cc43031f
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan [24350029, 2107, 24108732, 2406, 24107004]
- International Institute for Carbon Neutral Energy Research (WPI-I2CNER)
- World Premier International Research Center Initiative (WPI), MEXT, Japan
- Grants-in-Aid for Scientific Research [24107004, 24108732] Funding Source: KAKEN
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Three water-soluble cobalt porphyrins have been investigated as water oxidation catalysts via photo-initiation using Ru-II(bpy)(3)(2+)/Na2S2O8. The pH dependence of the turnover frequency revealed maximum activity at pH 11. Based on the second order dependence on catalyst concentration for the rate of water oxidation, we suggest a bimolecular radical coupling process as the rate determining step.
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