ELECTROCATALYTIC ACTIVITY OF ELECTROPOLYMERIZED FILMS OF ORTHO-PHENYLENEDIAMINE FOR O2 REDUCTION

被引：11

作者：

WATANABE, T ^{[1
]}

TOKUDA, K ^{[1
]}

OHSAKA, T ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,GRAD SCH NAGATSUTA,DEPT ELECTR CHEM,4259 NAGATSUTA,MIDORI KU,YOKOHAMA,KANAGAWA 227,JAPAN

来源：

DENKI KAGAKU | 1992年 / 60卷 / 06期

关键词：

ELECTROCATALYSIS; POLY(ORTHO-PHENYLENEDIAMINE); O-2; REDUCTION; REDOX POLYMER;

D O I：

10.5796/electrochemistry.60.455

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrocatalytic O2 reduction at glassy carbon and basal-plane pyrolytic graphite (BPG) electrodes coated with poly(o-phenylenediamine)(PPD)film, which can be prepared by electropolymerization of o-phenylenediamine in acidic aqueous media, was examined by cyclic voltammetry and rotating ring-disk electrode voltammetry. Especially, the quantitative analysis of the electrocatalytic reduction of O2 at BPG electrodes coated with monolayers of PPD (surface concentration of the electroactive site: (2-3) X 10(-10) mol cm-2) in air- and O2-saturated Na2SO4 solutions of pH 1.0 and 2.0 was conducted and the rate constant for the catalyzed reduction of O2 was estimated to be (1.4+/-0.5) X 10(6) M-1s-1. In addition, a brief discussion concerning the reaction mechanism was also given.

引用

页码：455 / 461

页数：7

共 26 条

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