Next Article in Journal
Sensors Best Paper Award 2011
Previous Article in Journal
A Trust Evaluation Algorithm for Wireless Sensor Networks Based on Node Behaviors and D-S Evidence Theory
Article Menu

Export Article

Open AccessArticle
Sensors 2011, 11(2), 1361-1374; doi:10.3390/s110201361

Preparation and Electrochemical Characterization of a Carbon Ceramic Electrode Modified with Ferrocenecarboxylic Acid

1
Department of Chemistry, Universidade Estadual Ponta Grossa, Avenida Carlos Cavalcanti 4748, Uvaranas, Ponta Grossa, Brazil
2
Department of Chemistry, CEDETEG—Universidade Estadual do Centro-Oeste, Rua Presidente Zacarias 875, Guarapuava, Brazil
*
Author to whom correspondence should be addressed.
Received: 3 December 2010 / Revised: 4 January 2011 / Accepted: 17 January 2011 / Published: 25 January 2011
(This article belongs to the Section Chemical Sensors)
View Full-Text   |   Download PDF [823 KB, uploaded 21 June 2014]   |  

Abstract

The present paper describes the characterization of a carbon ceramic electrode modified with ferrocenecarboxylic acid (designated as CCE/Fc) by electrochemical techniques and its detection ability for dopamine. From cyclic voltammetric experiments, it was observed that the CCE/Fc presented a redox pair at Epa = 405 mV and Epc = 335 mV (DE = 70 mV), related to the ferrocene/ferrocenium process. Studies showed a considerably increase in the redox currents at the same oxidation potential of ferrocene (Epa = 414 mV vs. Ag/AgCl) in the presence of dopamine (DA), differently from those observed when using only the unmodified CCE, in which the anodic peak increase was considerably lower. From SWV experiments, it was observed that the AA (ascorbic acid) oxidation at CCE/Fc occurred in a different potential than the DA oxidation (with a peak separation of approximately 200 mV). Moreover, CCE/Fc did not respond to different AA concentrations, indicating that it is possible to determine DA without the AA interference with this electrode. View Full-Text
Keywords: carbon ceramic electrode; ferrocene carboxylic acid; dopamine carbon ceramic electrode; ferrocene carboxylic acid; dopamine
Figures

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Skeika, T.; Zuconelli, C.R.; Fujiwara, S.T.; Pessoa, C.A. Preparation and Electrochemical Characterization of a Carbon Ceramic Electrode Modified with Ferrocenecarboxylic Acid. Sensors 2011, 11, 1361-1374.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top