Charge transfer across a conducting polypyrrole membrane separated by two electrolyte solutions

Electroanalysis - Tập 2 Số 8 - Trang 623-629 - 1990
Erkang Wang1, Yuqing Liu1, Zdeněk Samec2, C. Dvořák2
1Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, People's Republic of China
2J. Heyrovskć Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, Prague, Czechoslovakia

Tóm tắt

AbstractThis article describes anion transfer across a conducting polypyrrole membrane (PPM) using cyclic voltammetry with a four‐electrode system. The transfer process of both chloride and nitrate anions across the polypyrrole membrane used to separate two pools of electrolyte solutions has been studied. A wide potential window beyond 3 V was obtained, and well‐developed voltammograms for the transfer of nitrate and chloride anions appeared within this window. The transfer process depends on the ion size, the ion charge, and the surface characteristics of the polypyrrole membrane. The one‐way transfer phenomenon observed in different potential‐bias directions can be explained by the asymmetrical ion channel model of the polypyrrole membrane.

Từ khóa


Tài liệu tham khảo

Tien H. T., 1974, Bilayer Lipid Membranes (BLM)

10.1021/ja00386a061

10.1016/0013-4686(79)85048-3

10.1016/0302-4598(84)85094-1

10.1016/0302-4598(86)80065-4

10.1021/j150656a017

10.1016/0013-4686(84)87092-9

10.1016/S0022-0728(79)80203-X

10.1016/0379-6779(87)90551-0

10.1149/1.2124000

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Thông tin xuất bản

Electroanalysis

Tập 2 Số 8

623-629

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