Journal of Solid State Electrochemistry

, Volume 11, Issue 10, pp 1449–1457

Improvement of the electrochemical properties of “as-grown” boron-doped polycrystalline diamond electrodes deposited on tungsten wires using ethanol

  • Reinaldo F. Teófilo
  • Helder J. Ceragioli
  • Alfredo C. Peterlevitz
  • Leonardo M. Da Silva
  • Flavio S. Damos
  • Márcia M. C. Ferreira
  • Vitor Baranauskas
  • Lauro T. Kubota
Original Paper

DOI: 10.1007/s10008-007-0319-z

Cite this article as:
Teófilo, R.F., Ceragioli, H.J., Peterlevitz, A.C. et al. J Solid State Electrochem (2007) 11: 1449. doi:10.1007/s10008-007-0319-z

Abstract

The electrochemical properties of boron-doped diamond (BDD) polycrystalline films grown on tungsten wire substrates using ethanol as a precursor are described. The results obtained show that the use of ethanol improves the electrochemistry properties of “as-grown” BDD, as it minimizes the graphitic phase upon the surface of BDD, during the growth process. The BDD electrodes were characterized by Raman spectroscopy, scanning electronic microscopy, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The boron-doping levels of the films were estimated to be ∼1020 B/cm3. The electrochemical behavior was evaluated using the \( {\text{Fe}}{\left( {{\text{CN}}} \right)}_{{\text{6}}} ^{{{{\text{3}} - } \mathord{\left/ {\vphantom {{{\text{3}} - } {{\text{4}} - }}} \right. \kern-\nulldelimiterspace} {{\text{4}} - }}} \) and \( {\text{Ru}}{\left( {{\text{NH}}_{{\text{3}}} } \right)}_{{\text{6}}} ^{{{{\text{3 + }}} \mathord{\left/ {\vphantom {{{\text{3 + }}} {{\text{2 + }}}}} \right. \kern-\nulldelimiterspace} {{\text{2 + }}}}} \) redox couples and dopamine. Apparent heterogeneous electro-transfer rate constants \( k^{0}_{{{\text{app}}}} \) were determined for these redox systems using the CV and EIS techniques. \( k^{0}_{{{\text{app}}}} \) values in the range of 0.01–0.1 cm s−1 were observed for the \( {\text{Fe}}{\left( {{\text{CN}}} \right)}_{{\text{6}}} ^{{{{\text{3}} - } \mathord{\left/ {\vphantom {{{\text{3}} - } {{\text{4}} - }}} \right. \kern-\nulldelimiterspace} {{\text{4}} - }}} \) and \( {\text{Ru}}{\left( {{\text{NH}}_{{\text{3}}} } \right)}_{{\text{6}}} ^{{{{\text{3 + }}} \mathord{\left/ {\vphantom {{{\text{3 + }}} {{\text{2 + }}}}} \right. \kern-\nulldelimiterspace} {{\text{2 + }}}}} \) redox couples, while in the special case of dopamine, a lower \( k^{0}_{{{\text{app}}}} \) value of 10−5 cm s−1 was found. The obtained results showed that the use of CH3CH2OH (ethanol) as a carbon source constitutes a promising alternative for manufacturing BDD electrodes for electroanalytical applications.

Keywords

Boron-doped diamond electrodes Ethanol Cathodic pretreatment EIS 

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Reinaldo F. Teófilo
    • 1
  • Helder J. Ceragioli
    • 2
  • Alfredo C. Peterlevitz
    • 2
  • Leonardo M. Da Silva
    • 3
  • Flavio S. Damos
    • 1
  • Márcia M. C. Ferreira
    • 1
  • Vitor Baranauskas
    • 2
  • Lauro T. Kubota
    • 1
  1. 1.Instituto de QuímicaUniversidade Estadual de CampinasCampinasBrazil
  2. 2.Faculdade de Engenharia Elétrica e ComputaçãoUniversidade Estadual de CampinasCampinasBrazil
  3. 3.Departamento de Quimica-FACESAUniversidade Federal dos Vales do Jequitinhonha e MucuriDiamantinaBrazil

Personalised recommendations