A New Dinuclear Ruthenium Complex as an Efficient Water Oxidation Catalyst

被引：123

作者：

Xu, Yunhua ^{[3
]}

Akermark, Torbjorn ^{[3
]}

Gyollai, Viktor ^{[3
]}

Zou, Dapeng ^{[3
]}

Eriksson, Lars ^{[2
]}

Duan, Lele ^{[3
]}

Zhang, Rong ^{[4
]}

Akermark, Bjorn ^{[1
]}

Sun, Licheng ^{[3
]}

机构：

[1] Stockholm Univ, Dept Organ Chem, Arrhenius Lab, S-10691 Stockholm, Sweden

[2] Stockholm Univ, Dept Struct Chem, Arrhenius Lab, S-10691 Stockholm, Sweden

[3] Royal Inst Technol KTH, Sch Chem Sci & Engn, S-10044 Stockholm, Sweden

[4] Dalian Univ Technol, State Key Lab Fine Chem, KTH Joint Educ & Res Ctr Mol Devices, Dalian 116012, Peoples R China

来源：

INORGANIC CHEMISTRY | 2009年 / 48卷 / 07期

基金：

瑞典研究理事会;

关键词：

OXYGEN-EVOLVING COMPLEX; PHOTOSYSTEM-II; DIMANGANESE COMPLEX; MOLECULAR DIOXYGEN; RU COMPLEXES; BLUE DIMER; LIGANDS; MECHANISMS; EVOLUTION; MODEL;

D O I：

10.1021/ic802052u

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A dinuclear ruthenium complex, which acts as a molecular catalyst for water oxidation, has been synthesized and characterized. The electronic and electrochemical properties were studied by UV-vis spectroscopy and cyclic voltammetry. The oxidation potentials of the complex are significantly lowered by introducing a negatively charged carboxylate ligand, in comparison with those of the reported complexes that have neutral ligands. The catalytic activity of the complex toward water oxidation using Ce(NH4)(2)(NO3)(6) as a chemical oxidant was investigated by means of an oxygen electrode and mass spectrometry. The turnover number of this catalyst with Ce-IV as the chemical oxidant was found to be ca. 1700. The mass spectroscopic analysis of the isotopomer distribution in oxygen evolved from O-18-labeled water indicates that O atoms in the evolved oxygen originate from water.

引用

页码：2717 / 2719

页数：3

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