HYDRODYNAMIC VOLTAMMETRY WITH CHANNEL MICROBAND ELECTRODES - ALTERNATING-CURRENT IMPEDANCE MEASUREMENTS

被引：15

作者：

COMPTON, RG

WINKLER, J

机构：

[1] Physical Chemistry Laboratory, Oxford University, Oxford OX1 3QZ, South Parks Road

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1995年 / 99卷 / 14期

关键词：

D O I：

10.1021/j100014a024

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：

Theoretical expressions are given for the ac impedance of channel microband electrodes operating under laminar flow conditions. The effect of electrode size and solution flow rate is examined and the relative roles of axial diffusion and convective mass transport are identified so that the electrode impedance is quantified over the full experimental operating range of any practical electrode. Experiments employing the oxidation of ferrocene in acetonitrile solution at platinum microband channel electrodes are reported and shown to be in good agreement with theory.

引用

页码：5029 / 5034

页数：6

共 18 条

[1]

ABRAMOWITZ M, 1970, HDB MATH FUNCTIONS, P446

[2]

AMATORE C, 1990, ELECTROANAL, V2, P183

[3]

Amatore C., 1991, PORT ELECTROCHIM ACT, V9, P311

[4] DERIVATION OF AN APPROXIMATE EQUATION FOR CHRONOAMPEROMETRIC CURVES AT MICROBAND ELECTRODES AND ITS EXPERIMENTAL-VERIFICATION [J].