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2008•Journal of Instrumental AnalysisRequires access

Multilayer Assembly and Electrochemical Behavior of [SiMn(H_2O)W_(11)O_(39)]~(6-) on Glassy Carbon Electrode

Huang Yu-cheng

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Abstract

A novel chemically-modified electrode was constructed by multilayer films composed of heteropolyanion(SiNiW11) and cationic polymer poly(diallyldimethylammonium chloride) through electrochemical growth.The electrochemical behavior of this modified electrode and its electrocatalytic response to the reduction of BrO-3 and NO-2 were investigated by cyclic voltammetry.The experimental results showed that the films grew uniformly.The peak currents increased with the increasing of layers as well as the scan rate.Under the optimum conditions,the linear range for BrO-3 detection was found to be 0.345-5.28 mmol·L-1 with the detection limit of 8.8×10-5 mol·L-1,with a linear range of 3.45×10-4-5.28×10-3 mol·L-1.

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A novel chemically-modified electrode was constructed by multilayer films composed of heteropolyanion(SiNiW11) and cationic polymer poly(diallyldimethylammonium chloride) through electrochemical growth.The electrochemical behavior of this modified electrode and its electrocatalytic response to the reduction of BrO-3 and NO-2 were investigated by cyclic voltammetry.The experimental results showed that the films grew uniformly.The peak currents increased with the increasing of layers as well as the scan rate.Under the optimum conditions,the linear range for BrO-3 detection was found to be 0.345-5.28 mmol·L-1 with the detection limit of 8.8×10-5 mol·L-1,with a linear range of 3.45×10-4-5.28×10-3 mol·L-1.

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Available abstract

A novel chemically-modified electrode was constructed by multilayer films composed of heteropolyanion(SiNiW11) and cationic polymer poly(diallyldimethylammonium chloride) through electrochemical growth.The electrochemical behavior of this modified electrode and its electrocatalytic response to the reduction of BrO-3 and NO-2 were investigated by cyclic voltammetry.The experimental results showed that the films grew uniformly.The peak currents increased with the increasing of layers as well as the scan rate.Under the optimum conditions,the linear range for BrO-3 detection was found to be 0.345-5.28 mmol·L-1 with the detection limit of 8.8×10-5 mol·L-1,with a linear range of 3.45×10-4-5.28×10-3 mol·L-1.

Key concepts: Chemistry, Electrochemistry, Electrode, Detection limit, Cyclic voltammetry, Horizontal scan rate, Cationic polymerization, Analytical Chemistry (journal)

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Multilayer Assembly and Electrochemical Behavior of [SiMn(H_2O)W_(11)O_(39)]~(6-) on Glassy Carbon Electrode — Research Paper | ScholarLens