钴卟啉作为水氧化的均相催化剂。
Cobalt porphyrins as homogeneous catalysts for water oxidation.
机构信息
Department of Chemistry, Faculty of Sciences, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan.
出版信息
Chem Commun (Camb). 2013 Jul 18;49(56):6325-7. doi: 10.1039/c3cc43031f.
PMID:23743719
Abstract
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.
摘要
三种水溶性钴卟啉已被研究为通过 Ru(II)(bpy)3(2+)/Na2S2O8 光引发的水氧化催化剂。 turnover frequency 对 pH 的依赖关系表明在 pH 11 时具有最大活性。基于对水氧化速率的催化剂浓度的二级依赖关系，我们提出双分子自由基偶联过程作为速率决定步骤。
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