Electrochemical behaviour of electrodes assembled with Ti-containing diamond films

High quality polycrystalline diamond films containing Ti dispersions have b een produced by means of a hybrid CVD/powder flowing technique and used to assemble electrochemical probes. The electrochemical response was evaluated by performing cyclic voltammetry and fixed potential amperometry of both i norganic [Fe(CN)(6)(4-)], and organic (ascorbic acid, epinephrine) compound s. The electro-analytical responses of these diamond-based electrodes have been compared with those of conventional glassy carbon and pyrolytic graphi te electrodes. In view of their rather good performances, the Ti-containing diamond-based electrodes appear to be suitable for analytical purposes, an d especially promising for applications in systems requiring absolute bioco mpatibility. (C) 2001 Elsevier Science B.V. Ah rights reserved.