Journal
ELECTROCHIMICA ACTA
Volume 54, Issue 22, Pages 5053-5059Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2008.12.056
Keywords
Single-walled carbon nanotubes; Nanostructured iron(II)phthalocyanine; Layer-by-layer self-assembly; Cyclic voltammetry; Impedance spectroscopy; Electron transfer kinetics; Hydrogen peroxide detection
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The fabrication of nanostructured platform of poly(m-aminobenzenesulfonic acid) functionalised single-walled carbon nanotubes (SWCNTs-PABS)-iron(II)phthalocyanine nanoparticles (nanoFePc) using layer-by-layer(LBL) self-assembly strategy is described. The substrate build-up, via strong electrostatic interaction, was monitored using atomic force microscopy (AFM) and electrochemical measurements. As the number of bilayers is increased, the electron transfer kinetics of the ferricyaninde/ferrocyanide redox probe is decreased, while the electrochemical reduction of H2O2 at a constant concentration is amplified. The amplification of the electrochemical response to H2O2 detection suggests that this type of electrode could provide an important nano-architectural sensing platform for the development of a sensor. (C) 2009 Elsevier Ltd. All rights reserved.
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