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Titolo:
Determination of heterogeneous electron transfer rate constants at microfabricated iridium electrodes
Autore:
Feeney, R; Kounaves, SP;
Indirizzi:
Tufts Univ, Dept Chem, Medford, MA 02155 USA Tufts Univ Medford MA USA 02155 ts Univ, Dept Chem, Medford, MA 02155 USA
Titolo Testata:
ELECTROCHEMISTRY COMMUNICATIONS
fascicolo: 10, volume: 1, anno: 1999,
pagine: 453 - 458
SICI:
1388-2481(199910)1:10<453:DOHETR>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANODIC-STRIPPING VOLTAMMETRY; STEADY-STATE VOLTAMMOGRAMS; MICROELECTRODE ARRAYS; MERCURY ULTRAMICROELECTRODE; KINETIC-PARAMETERS; CYCLIC VOLTAMMETRY; HEAVY-METALS; DICHLOROMETHANE; OXIDATION; FERROCENE;
Keywords:
iridium; rate constant; steady-state current; ferricyanide; microfabrication;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Kounaves, SP Tufts Univ, Dept Chem, Medford, MA 02155 USA Tufts Univ Medford MA USA 02155 Chem, Medford, MA 02155 USA
Citazione:
R. Feeney e S.P. Kounaves, "Determination of heterogeneous electron transfer rate constants at microfabricated iridium electrodes", ELECTROCH C, 1(10), 1999, pp. 453-458

Abstract

There has been an increasing use of both solid metal and microfabricated iridium electrodes as substrates for various types of electroanalysis. However, investigations to determine heterogeneous electron transfer rate constants on iridium, especially at an electron beam evaporated or de magnetron sputtered surface, have not previously been performed. This paper compares the results of these microfabricated surfaces using ultramicroelectrode arrays and steady-state currents. Even though the de magnetron sputtered iridium surface demonstrated a slightly more reversible electrochemical behavior than the electron beam evaporated surface, overall the microfabricated microelectrodes and ring electrode indicated similar reversibility to the polished metallic iridium disk electrode. (C) 1999 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 22:34:09