Palladium electrodeposition on polyaniline films

被引：38

作者：

Mourato, A.

Correia, J. P.

Siegenthaler, H.

Abrantes, L. M.

机构：

[1] Univ Lisbon, Fac Ciencias, Dept Quim & Bioquim, P-1749016 Lisbon, Portugal

[2] Univ Bern, Dept Biochem & Chem, CH-3012 Bern, Switzerland

来源：

ELECTROCHIMICA ACTA | 2007年 / 53卷 / 02期

关键词：

polyaniline; palladium; electrodeposition; AFM;

D O I：

10.1016/j.electacta.2007.07.050

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical nucleation and growth of palladium particles onto polyaniline (PAni) films have been investigated by chronoamperometry and topographic and phase-mode atomic force microscopy (AFM). The films were synthesized under different potentiodynamic conditions in order to obtain polymer layers with comparable electroactivity but distinctly different morphology/porosity. The analysis of the current transients obtained for the initial stages of the Pd deposition indicates a 3D nucleative formation regime. A detailed Pd electrodeposition study onto the polymer matrix, using different deposition times, suggests that a constant number of critical nuclei is formed in the superficial part of the polymer porous matrix in the time scale between ca. 5 and 15 s. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：664 / 672

页数：9

共 36 条

[1] POLYMER-FILMS CONTAINING METAL PARTICLES - NOBLE-METALS IN POLYANILINE [J].