Recent advances in electrochemistry of diamond

Conductive boron-doped chemically vapour-deposited diamond thin film and ho neycomb electrodes were examined for various possible applications in elect roanalysis and electric double layer capacitor applications, respectively; The possibility of voltammetric study of electrochemical reactions occurrin g at high oxidation and high reduction potentials was demonstrated at diamo nd electrodes, taking histamine and carbon tetrachloride as respective exam ples. High sensitivity and high stability of this electrode were demonstrat ed for the determination of histamine and sulfadiazine by flow injection an alysis method. Nanostructured honeycomb diamond electrodes, prepared by oxy gen plasma etching, exhibited a wide potential window similar to that of as -grown film but a capacitance 200 times higher than that of the as-grown fi lm. These results indicate the usefulness of diamond electrode for electroa nalysis and double layer capacitor applications. (C) 2000 Elsevier Science S.A. All rights reserved.