Surface Activation of C-sp 3 in Boron-Doped Diamond Electrode

Electrocatalysis 09/2013; 4(4). DOI: 10.1007/s12678-013-0158-x

ABSTRACT C-sp 2 (graphite) impurities are undesirable in syn-thetic diamond electrodes (C-sp 3), because they can affect the electrochemical response. In this work, we demonstrate that C-sp 3 surfaces can be activated successfully by applying an anodic current density corresponding to sufficiently high po-tential 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.

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