Article

Electrocatalysis

, Volume 4, Issue 4, pp 189-195

Surface Activation of C-sp3 in Boron-Doped Diamond Electrode

  • Alejandro MedelAffiliated withCentro de Investigación y Desarrollo Tecnológico en Electroquímica
  • , Erika BustosAffiliated withCentro de Investigación y Desarrollo Tecnológico en Electroquímica
  • , Luis M. ApátigaAffiliated withCentro de Física Aplicada y Tecnología Avanzada
  • , Yunny MeasAffiliated withCentro de Investigación y Desarrollo Tecnológico en Electroquímica Email author 

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Abstract

C-sp2 (graphite) impurities are undesirable in synthetic diamond electrodes (C-sp3), because they can affect the electrochemical response. In this work, we demonstrate that C-sp3 surfaces can be activated successfully by applying an anodic current density corresponding to sufficiently high potential where the hydroxyl radicals (OH) are generated. The effectiveness of this activation process was verified by Raman spectroscopy, X-ray diffraction, scanning electron microscopy, and cyclic voltammetry.

Keywords

Boron doped diamond Anodic polarization Electrochemical oxidation Hydroxyl radicals Graphite