Electrocatalytic Water Oxidation by a Copper(II) Complex of an Oxidation-Resistant Ligand

被引：159

作者：

Fisher, Katherine J.

Materna, Kelly L.

Mercado, Brandon Q.

Crabtree, Robert H. ^{[1
]}

Brudvig, Gary W. ^{[1
]}

机构：

[1] Yale Univ, Dept Chem, New Haven, CT 06520 USA

来源：

ACS CATALYSIS | 2017年 / 7卷 / 05期

基金：

美国国家科学基金会;

关键词：

water-oxidation catalysis; homogeneous electrocatalysis; oxygen-evolution reaction; OER; copper electrocatalysis; ARTIFICIAL PHOTOSYNTHESIS; IRIDIUM COMPLEXES; OXYGEN EVOLUTION; REDOX PROPERTIES; NEUTRAL PH; CATALYSTS; EFFICIENT; CU(II);

D O I：

10.1021/acscatal.7b00494

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The copper(II) complex Cu(pyalk)(2) (pyalk = 2-pyridyl-2-propanoate) is a robust homogeneous water-oxidation electrocatalyst under basic conditions (pH > 10.4). Water oxidation occurs at a relatively low overpotential for copper of 520-580 mV with a turnover frequency of similar to 0.7 s(-1). Controlled potential electrolysis experiments over 12 h at 1.1 V vs NHE resulted in the formation of >30 catalytic turnovers of O-2 with only similar to 20% catalyst degradation. The robustness of the catalyst under fairly harsh conditions and the low overpotential further highlight the oxidation resistance and strong donor character of pyalk.

引用

页码：3384 / 3387

页数：4

共 39 条

[1]

Bard A. J., 2000, ELECTROCHEMICAL METH, P471

[2] ARTIFICIAL PHOTOSYNTHESIS - SOLAR SPLITTING OF WATER TO HYDROGEN AND OXYGEN [J].