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|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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