STEADY-STATE VOLTAMMETRY OF SIMPLE AND POLYELECTROLYTE STRONG ACIDS WITH AND WITHOUT SUPPORTING ELECTROLYTE

被引：33

作者：

MORRIS, SE ^{[1
]}

CISZKOWSKA, M ^{[1
]}

OSTERYOUNG, JG ^{[1
]}

机构：

[1] N CAROLINA STATE UNIV,DEPT CHEM,RALEIGH,NC 27695

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 40期

关键词：

D O I：

10.1021/j100142a031

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：

Hydrogen ion is employed as the counterion to a polymer strong acid, poly(styrenesulfonate), and to a monomer analog, p-toluenesulfonate. Steady-state currents for proton reduction at a microelectrode are used to characterize the dependence of diffusion, migration, and activity in the presence of polyelectrolyte on concentration of supporting electrolyte from zero to large excess. Use of microelectrodes makes the measurements possible in the resistive dilute solutions. Measured diffusion-migration currents for proton in p-toluenesulfonate solution agree well with those predicted. Similar predictions for poly(styrenesulfonate) based on a semiempirical model agree with experimental values to within 2%. Steady-state voltammetry thus reflects accurately ionic transport in polyelectrolytic media and provides a simple, species-specific technique for investigating factors influencing transport in these systems.

引用

页码：10453 / 10457

页数：5

共 43 条

[1] COLLIGATIVE PROPERTIES OF POLYELECTROLYTE SOLUTIONS IN EXCESS OF SALT [J].