Layer-by-layer Assemblies Consisting of Vandium-substituted Keggin Type Heteropolytungstate Anions and Their Electrocatalytic Behavior

Abstract

Abstract: Vanadium-substituted heteropolytungstate anions(H₃PW₆V₆O₆-40, denoted as PW₆V₆)-containing multilayer films have been fabricated on the 4-aminobenzoic acid(4-ABA) modified GCE surface by alternating deposition with a quaternized poly(4-vinylpyridine) partially complexed with osmium bis(2,2-bipyridine)(denoted as QPVP-Os). Surface plasmon resonance(SPR) spectroscopy and cyclic voltammetry(CV) have been used to characterize the growing behavior of the as-prepared multilayer films. It is shown that the multilayer films are uniform. The average thickness for a bilayer of QPVP-Os/PW₆V₆ in the multilayer films is 2.88 nm. The electrocatalytic activities of the multilayer films for the reduction of BrO₃^- and NO₂^- have been investigated.

Key words: Layer-by-layer assembly, Vanadium-substituted heteropolytungstate anions, Electrocatalytic reduction

CLC Number:

O657

TrendMD:

ZHAI Sheng-Yong, LIU Jian-Yun, JIN Yong-Dong, DONG Shao-Jun . Layer-by-layer Assemblies Consisting of Vandium-substituted Keggin Type Heteropolytungstate Anions and Their Electrocatalytic Behavior[J]. Chem. J. Chinese Universities, 2003, 24(6): 992.

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Layer-by-layer Assemblies Consisting of Vandium-substituted Keggin Type Heteropolytungstate Anions and Their Electrocatalytic Behavior

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