Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/17978
Title: Preparation and characterisation of poly(3,4-ethylenedioxythiophene) and poly(3,4-ethylenedioxythiophene)/poly(neutral red) modified carbon film electrodes, and application as sensors for hydrogen peroxide
Authors: Gonçalves, A. Ricardo 
Ghica, M. Emilia 
Brett, Christopher M. A. 
Keywords: PEDOT-coated electrodes; Poly(neutral red); Electropolymerisation; Carbon film electrode; Hydrogen peroxide
Issue Date: Apr-2011
Publisher: Elsevier B.V.
Citation: GONÇALVES, A. Ricardo; GHICA, M. Emilia; BRETT, Christopher M. A. - Preparation and characterisation of poly(3,4-ethylenedioxythiophene) and poly(3,4-ethylenedioxythiophene)/poly(neutral red) modified carbon film electrodes, and application as sensors for hydrogen peroxide. "Electrochimica Acta". ISSN 0013-4686. 56:10 (2011) 3685-3692
Serial title, monograph or event: Electrochimica Acta
Volume: 56
Issue: 10
Abstract: Poly(3,4-ethylenedioxythiophene) (PEDOT) films have been prepared for the first time on carbon-film electrodes (CFE) in aqueous solution using electropolymerisation by potential cycling, potentiostatically and galavanostatically. Characterisation of the modified electrodes was done by cyclic voltammetry and electrochemical impedance spectroscopy and the stability of the polymer films was probed. The coated electrodes were tested for application as hydrogen peroxide sensors, by oxidation and reduction. A novel polymer film was also formed by modification of CFE by co-electropolymerisation of EDOT and the phenazine dye neutral red (NR) – (PEDOT/PNR) with a view to enhancing the properties for sensor applications. It was found that hydrogen peroxide reduction at the PEDOT/PNR coated electrodes could be carried out at a less negative potential, the sensor performance comparing very favourably with that of other polymer-modified electrodes reported in the literature.
URI: http://hdl.handle.net/10316/17978
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2010.11.056
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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