ELECTRICAL MODULATION OF THE SOLUTION PH NEAR POLYANILINE AND ITS COMPOSITE ELECTRODES

被引:26
作者
SAWAI, T
SHINOHARA, H
IKARIYAMA, Y
AIZAWA, M
机构
[1] TOKYO INST TECHNOL,DEPT BIOENGN,MEGURO KU,TOKYO 152,JAPAN
[2] ASAHI CHEM IND CO LTD,DEPT RES & DEV,CHIYODO KU,TOKYO 100,JAPAN
来源
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1990年 / 283卷 / 1-2期
关键词
D O I
10.1016/0022-0728(90)87392-W
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The pH in the vicinity of a thin conducting polymer-coated electrode was electrochemically modulated without electrolysis of water. A pH modulator was constructed by depositing polyaniline and its composites with polystyrene sulphonate or polyperfluorosulphuric acid (Nafion®) thin membrane onto the surface of Pt, Au plate or graphite sheet electrodes. Changes in pH were measured directly using an IS-FET pH sensor. The pH changed by two orders of magnitude within several tens of ms near the polyaniline-coated electrode in a solution without hydrogen and oxygen evolution. The rate of ion transfer in the membrane matrix was determined in relation to the proposed analysis of chronoamperometry. © 1990.
引用
收藏
页码:221 / 230
页数:10
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