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Original scientific paper

PEDOT Modified Carbon Paste Microelectrodes for Scanning Electrochemical Microscopy

Balazs Csoka ; Department of Analytical and Environmental Chemistry, Faculty of Sciences, University of Pécs, Ifjúság útja 6, H-7624 Pécs, Hungary
Zineb Mekhalif ; Laboratory of Chemistry and Electrochemistry of Surfaces, University of Namur (FUNDP), Rue de Bruxelles 61, B-5000 Namur, Belgium

Full text: english pdf 5.879 Kb

page 407-412

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Only one measuring tip was used in three different modes of operation of the Scanning Electrochemical
Microscope (feed-back mode, generation-collection mode, potentiometry) to collect chemical information
about copper targets. The tip was formed from 5 and 25 μm diameter conventional platinum
microdisk electrode by etching a cavity, then electrochemically depositing poly(3,4-ethylenedioxythiophene)
(PEDOT) layer doped with hexacyanoferrate and finally filling with modified carbon paste
based Cu2+ sensing layer. The preparation and electrochemical working parameters of this kind of solidcontact
microelectrodes are discussed as well as SECM applications for copper detection is reported.
(doi: 10.5562/cca1784)


carbon paste, PEDOT, SECM, potentiometry, amperometry

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