Publication

Deposition of nanoparticles of iridium dioxide on a synthetic boron-doped diamond surface

Christos Comninellis, Ilaria Duo
2002
Conference Papers

Abstract

The electrochem. properties of IrO2 nanoparticles deposited on a synthetic boron-doped diamond surface (BDD/IrO2) were investigated. After a description of the prepn. procedure by thermal decompn. technique, the morphol. characterization of the samples by SEM and TEM was discussed. The electrochem. behavior of the redox system 1,4-benzoquinone/hydroquinone (Q/H2Q) was studied on BDD electrodes with a different IrO2 loading. The kinetics parameters such the transfer coeffs. a and b and the reaction rate const. k0 were calcd. Oxygen evolution and oxidn. of org. compds. were investigated on both BDD and BDD/IrO2 electrodes by voltammetric measurements and preparative electrolysis. A phenomenol. model is proposed to explain the behavior of electrodes. [on SciFinder (R)]

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https://infoscience.epfl.ch/entities/publication/261212c1-7482-45ca-accd-3a2fef4c5a0c

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Christos Comninellis, Ilaria Duo
2002
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/261212c1-7482-45ca-accd-3a2fef4c5a0c

About this result

Related concepts (25)

Voltammetry

Voltammetry is a category of electroanalytical methods used in analytical chemistry and various industrial processes. In voltammetry, information about an analyte is obtained by measuring the current as the potential is varied. The analytical data for a voltammetric experiment comes in the form of a voltammogram which plots the current produced by the analyte versus the potential of the working electrode. Voltammetry is the study of current as a function of applied potential.

Electroanalytical methods

Electroanalytical methods are a class of techniques in analytical chemistry which study an analyte by measuring the potential (volts) and/or current (amperes) in an electrochemical cell containing the analyte. These methods can be broken down into several categories depending on which aspects of the cell are controlled and which are measured. The four main categories are potentiometry (the difference in electrode potentials is measured), amperometry (electric current is the analytical signal), coulometry (charge passed during a certain time is recorded), and voltammetry (the cell's current is measured while actively altering the cell's potential).

Cyclic voltammetry

In electrochemistry, cyclic voltammetry (CV) is a type of potentiodynamic measurement. In a cyclic voltammetry experiment, the working electrode potential is ramped linearly versus time. Unlike in linear sweep voltammetry, after the set potential is reached in a CV experiment, the working electrode's potential is ramped in the opposite direction to return to the initial potential. These cycles of ramps in potential may be repeated as many times as needed.

Related publications (8)

Deposition of nanoparticles of iridium dioxide on a synthetic boron-doped diamond surface

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