Electrocatalytic reduction of dioxygen on the surface of glassy carbon electrodes modified with dicobalt diporphyrin complexes

被引：25

作者：

Lu, WB ^{[1
]}

Wang, CX ^{[1
]}

Lv, QY ^{[1
]}

Zhou, XH ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2003年 / 558卷

关键词：

chemically modified electrode; oxygen reduction; electrocatalytic reduction; dicobalt diporphyrin complexes;

D O I：

10.1016/S0022-0728(03)00377-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrocatalytic reduction of dioxygen has been studied by cyclic voltammetry at glassy carbon electrodes (GCEs) modified with four different dicobalt diporphyrin complexes in dioxygen-saturated aqueous solutions. The electroreduction of O-2 on modified GCEs is irreversible and diffusion-controlled. Under the catalysis of these metallodiporphyrins, dioxygen reduces to hydrogen peroxide via a two-electron process. The results reveal that the geometric conformation of diporphyrins determines whether dioxygen is reduced by a four-electron process to water or via a two-electron change to hydrogen peroxide. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：59 / 63

页数：5

共 18 条

[1]

BARD AJ, 1980, ELECTROCHEMICAL METH, pCH3

[2] ELECTROREDUCTION OF OXYGEN BY PILLARED COBALT COFACIAL DIPORPHYRIN CATALYSTS [J].

CHANG, CK ;

LIU, HY ;

ABDALMUHDI, I .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1984, 106 (09) :2725-2726

[3] Electrocatalytic reduction of dioxygen by quadruply aza bridged closely interfaced cofacial bis(5,10,15,20-tetraphenylporphyrin)s in various pH solutions [J].

Choi, YK ;

Jeon, S ;

Park, JK ;

Chjo, KH .

ELECTROCHIMICA ACTA, 1997, 42 (08) :1287-1293

[4] POTENT CATALYSIS OF THE ELECTROREDUCTION OF OXYGEN TO WATER BY DICOBALT PORPHYRIN DIMERS ADSORBED ON GRAPHITE-ELECTRODES [J].

COLLMAN, JP ;

MARROCCO, M ;

DENISEVICH, P ;

KOVAL, C ;

ANSON, FC .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1979, 101 (01) :117-122

[5] SYNTHESIS AND CHARACTERIZATION OF "FACE-TO-FACE" PORPHYRINS (BIOMETALLIC LIGANDS/METAL-METAL INTERACTIONS/ELECTRON SPIN RESONANCE/DIOXYGEN REDUCTION/DINITROGEN REDUCTION) [J].

COLLMAN, JP ;

ELLIOTT, CM ;

HALBERT, TR ;

TOVROG, BS .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1977, 74 (01) :18-22

[6] MOLECULAR CATALYSTS FOR MULTIELECTRON REDOX REACTIONS OF SMALL MOLECULES - THE COFACIAL METALLODIPORPHYRIN APPROACH [J].

COLLMAN, JP ;

WAGENKNECHT, PS ;

HUTCHISON, JE .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1994, 33 (15-16) :1537-1554

[7] ELECTRODE CATALYSIS OF THE 4-ELECTRON REDUCTION OF OXYGEN TO WATER BY DICOBALT FACE-TO-FACE PORPHYRINS [J].

COLLMAN, JP ;

DENISEVICH, P ;

KONAI, Y ;

MARROCCO, M ;

KOVAL, C ;

ANSON, FC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1980, 102 (19) :6027-6036

[8] MULTILAYER ACTIVITY AND IMPLICATIONS OF HYDROGEN-PEROXIDE IN THE CATALYTIC REDUCTION OF DIOXYGEN BY A DICOBALT COFACIAL BIS(PORPHYRIN) (CO2FTF4) [J].

COLLMAN, JP ;

HENDRICKS, NH ;

LEIDNER, CR ;

NGAMENI, E ;

LHER, M .

INORGANIC CHEMISTRY, 1988, 27 (02) :387-393

[9] MECHANISTIC ASPECTS OF THE CATALYTIC REDUCTION OF DIOXYGEN BY COFACIAL METALLOPORPHYRINS [J].

DURAND, RR ;

BENCOSME, CS ;

COLLMAN, JP ;

ANSON, FC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1983, 105 (09) :2710-2718

[10] HOMOGENEOUS CATALYSIS OF THE ELECTROCHEMICAL REDUCTION OF DIOXYGEN BY A MACROCYCLIC COBALT(III) COMPLEX [J].

GEIGER, T ;

ANSON, FC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1981, 103 (25) :7489-7496

← 1 2 →