Research on Modified Electrode of Conducting Polymer (Ⅱ)──Characteristic of Polypyrrole Film Doped with Heteropolyanbns

Abstract

Abstract: Polypyrrole film electrode with Co(W₂O₇)₆^10- and CuW₁₂O₄₀^6-ions were synthesized in aqueous solutions, The electrode possesses a good stability and cyclic voltammetric behavior in weakly acidic or near neutral solutions.The redox of CuW₁₂O₆^10- ion can be catalysed by the polypyrrole film.The ESRmeasurement of the polypyrrole film with Co(W₂O₇)₆^10- and CuW₁₂O₁₀^6- ions indicates that the heteropolyanions not only play the role of neutralizing electricity in the polypyrrole film,contrasted with the film containing NO₃^-, but also interact with the polypyrrole molecular chain to form some additive compound.The additive compound affects the electric structure of the polypyrrole film and is unstable at more positive or more negative potentials.

Key words: Co(W₂O₇)₆^10-, CuW₁₂O₄₀^6-, Polypyrrole

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DING Jie, DONG Shao-Jun. Research on Modified Electrode of Conducting Polymer (Ⅱ)──Characteristic of Polypyrrole Film Doped with Heteropolyanbns[J]. Chem. J. Chinese Universities, 1996, 17(8): 1191.

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Research on Modified Electrode of Conducting Polymer (Ⅱ)──Characteristic of Polypyrrole Film Doped with Heteropolyanbns

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