TITLE

Influence of surface inhomogeneities of boron doped CVD-diamond electrodes on reversible charge transfer reactions

AUTHOR(S)
Becker, D.; Jüttner, K.
PUB. DATE
October 2003
SOURCE
Journal of Applied Electrochemistry;Oct2003, Vol. 33 Issue 10, p959
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The electrochemical behaviour of reversible charge transfer reactions on boron doped diamond (BDD) was studied by cyclic voltammetry and electrochemical impedance spectroscopy using rotating disc electrodes under defined convection. Diamond films of 5 μm thickness with doping levels of 200, 3000 and 6000 ppm were prepared by hot filament chemical vapour deposition on niobium substrate. The electrochemical measurements were carried out on BDD electrodes in deaerated 0.5 M Na2SO4 + 5 mM K3[Fe(CN)6]/K4[Fe(CN)6] solution at rotation frequencies 0 < frot < 4000 rpm. Comparative measurements were carried out on an active Pt electrode. The BDD electrodes exhibit distinct irreversibilities indicated by a larger peak potential difference in the cyclic voltammograms, lower diffusion limiting current densities and an additional impedance element at high frequencies. Mechanical polishing with carbon fleece and SiC paper strongly affects the irreversible behaviour of the BDD electrodes. The experimental results are explained by a partial blocking of the diamond surface with reversible charge transfer at active sites. The impedance spectra are analysed quantitatively using a transport impedance model for reversible reactions on partially blocked electrode surfaces.
ACCESSION #
16781818

 

Related Articles

  • Length dependence of carbon-doped BN nanowires: A-D Rectification and a route to potential molecular devices. Qiu, M.; Liew, K. M. // Journal of Applied Physics;Feb2013, Vol. 113 Issue 5, p054305 

    Based on the first-principles approach, electronic transport properties of different lengths of carbon-doped boron-nitrogen nanowires, capped with two thiols as end groups connected to Au electrodes surfaces, are investigated. The results show that rectifying performance and negative...

  • Tunneling in mesoscopic junctions using the numerical renormalization group method. Frota, H.; Pinto, J. // European Physical Journal B -- Condensed Matter;May2011, Vol. 81 Issue 2, p215 

    We have applied the Numerical Renormalization Group method to study a mesoscopic system consisting of two samples of a metal separated by an insulating barrier with nanometer dimensions. It allows the tunnelling of a single electron from one side to the other side of the junction. The junction...

  • Erratum to: Electronic parameters for charge transfer along DNA. Hawke, L.; Kalosakas, G.; Simserides, C. // European Physical Journal E -- Soft Matter;Oct2011, Vol. 34 Issue 10, p1 

    No abstract available.

  • Method for determining the electrode overpotential on circular samples. Riess, I. // Journal of Applied Physics;4/15/1992, Vol. 71 Issue 8, p4079 

    Focuses on a study which proposed a method for determining the electrode overpotential on circular samples. Background to the study; Results and discussion.

  • Electrical transport through carbon nanotube junction. Chiu, P. W.; Kim, G. T.; Gu, G.; Philipp, G.; Roth, S. // AIP Conference Proceedings;2001, Vol. 591 Issue 1, p368 

    Metal-Semiconductor crossed carbon nanotube junction was prepared by adsorption of carbon nanotubes on Si/SiO[sub2] substrate with predefined electrode contacts. The Schottky barrier was formed in the contact region due to the charge transfer from the metallic tube to semiconducting tube. The...

  • Structure and Charge Transfer Dynamics of Uranyl Ions in Boron Oxide and Borosilicate Glasses. Liu, G. K.; Zhuang, H. Z.; Beitz, J. V.; Williams, C. W.; Vikhnin, V. S. // Physics of the Solid State;Aug2002, Vol. 44 Issue 8, p1433 

    Laser spectroscopic experiments, molecular dynamics simulation, and charge transfer-lattice interaction modeling have been conducted for studying the electronic and structural properties of the uranyl ion UO[sup 2+, sub 2] in boron oxide and borosilicate glasses. The charge transfer electronic...

  • Evaluation of boron doped diamond electrodes for organic electrosynthesis on a preparative scale⋆. Griesbach, Ulrich; Zollinger, Daniel; Pütter, Hermann; Comninellis, Christos // Journal of Applied Electrochemistry;Dec2005, Vol. 35 Issue 12, p1265 

    We have investigated some anodic and cathodic transformations using boron doped diamond (BDD) electrodes. The oxidation of a propargylic alcohol as well as the aromatic side chain oxidation in water as electrolyte did not␣yield the desired products in high yield and selectivity and led...

  • The effect of surface termination on glucose oxidation using Ni-modified diamond electrodes. Svanberg‐Larsson, Johanna; Nelson, Geoffrey W.; Jiang, Luyun; Walker, Robert J.; Foord, John S. // Physica Status Solidi. A: Applications & Materials Science;Aug2016, Vol. 213 Issue 8, p2099 

    Abstractauthoren This study describes the decoration of hydrogen- and oxygen-terminated boron-doped diamond electrodes (BDD) with three different loadings of Ni. The Ni was deposited electrochemically for 600, 400, and 100 s on both hydrogen-terminated BDD (BDDH) and oxygen-terminated BDD...

  • Voltammetric determination of erythromycin in water samples using a boron-doped diamond electrode. Radičová, Monika; Behúl, Miroslav; Vojs, Marian; Bodor, Róbert; Vojs Staňová, Andrea // Physica Status Solidi (B);Nov2015, Vol. 252 Issue 11, p2608 

    A new, simple, sensitive, and low-cost voltammetric method using an as-grown boron-doped diamond electrode was developed for the determination of erythromycin in environmental (water) samples. Erythromycin provided an irreversible oxidation peak at a potential of + 0.87 V versus Ag/AgCl/KCl (3...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics