The electrochemistry of platinum phthalocyanine microcrystals III. Electrochemical behaviour in aqueous electrolytes

被引：13

作者：

Brown, RJC ^{[1
]}

Kucernak, AR ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

来源：

ELECTROCHIMICA ACTA | 2001年 / 46卷 / 16期

基金：

英国工程与自然科学研究理事会;

关键词：

platinum phthalocyanine; electrochemical behaviour; phase tranformation; microcrystals; abrasion;

D O I：

10.1016/S0013-4686(01)00469-8

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Platinum phthalocyanine (PtPc) films applied to gold and glassy carbon (GC) surfaces have been shown to exhibit complex electrochemistry in aqueous media. Upon potentiodynamic cycling three anodic (0.81, 1.10 and 1.27 V) and two cathodic peaks (1.12 and 0.59 V vs SCE) develop. These processes are ascribed to phthalocyanine ring oxidation and reduction processes. This phthalocyanine ring electrochemistry is thought to be controlled by anion doping within the film, the large separation between corresponding anodic and cathodic processes being manifestations of barrier potential to anion movement within the film. A large reduction peak at -0.6 V is attributed to the mass expulsion of anions from the film. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：2573 / 2582

页数：10

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