Abstract
The electrochemical multilayer films of crown-shaped polyoxomolybdate Na 21{[Na 5(H 2O) 14]∩[Mo V 20Mo VI 26O 134(OH) 10( μ-CH 3COO) 4]}⋅CH 3COONa⋅90H 2O (Mo 46) and polyelectrolytes by layer-by-layer assembly were investigated. The stable multilayer films were assembled by alternate adsorption of negatively charged POM and positively charged polyelectrolytes is from their aqueous dispersions. UV–vis spectroscopy and cyclic voltammetry were used to monitor the regular growth of the multilayer films. The multilayer films-modified ITO electrode was used for the detection of electrocatalytic activity toward the reduction of nitrite, bromate, and hydrogen peroxide. The proposed novel immobilized method exhibited good stability, reproducibility and high sensitivity for the determination of electrocatalytic, which is important for practical application.
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