Assembly and Electrochemical Study of Transition Metal Substituted Polyoxometalates SiW11NiO396- and SiW11MnO396- on 4-Aminothiophenol Modified Glassy Carbon Electrode

Abstract

Abstract: Via layer-by-layer assembly, the polyoxometalates of Keggin type, SiW₁₁O₃₉Ni(H₂O)^6-(SiNiW₁₁) and SiW₁₁O₃₉Mn(H₂O)^6-(SiMnW₁₁) were first immobilized on a 4-aminothiophenol(4-ATP) modified glassy carbon electrode surface. The electrochemical behavior of these polyoxometalates was investigated. They exhibited some special properties in the films, which are different from those in a homogeneous aqueous solution. Their reaction mechanism in a multilayer film is proposed. The electrocatalytic behavior of these multilayer film electrodes for the reduction of BrO₃^- and NO₂^- were comparatively studied.

Key words: Polyoxometalate, Layer-by-layer assembly, Electrochemical behavior, Electrocatalytic reduction, BrO₃^-, NO₂^-

LÜ Gui-qin, DU Jin-yan, HU Chang-wen. Assembly and Electrochemical Study of Transition Metal Substituted Polyoxometalates SiW₁₁NiO₃₉^6- and SiW₁₁MnO₃₉^6- on 4-Aminothiophenol Modified Glassy Carbon Electrode[J]. Chemical Research in Chinese Universities, 2005, 21(4): 401-405.

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Assembly and Electrochemical Study of Transition Metal Substituted Polyoxometalates SiW₁₁NiO₃₉^6- and SiW₁₁MnO₃₉^6- on 4-Aminothiophenol Modified Glassy Carbon Electrode

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