The Determination of Methanol Using an Electrolytically Fabricated Nickel Microparticle Modified Boron Doped Diamond Electrode

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Data

2010-03-01

Autores

Toghill, Kathryn E.
Xiao, Lei
Stradiotto, Nelson Ramos [UNESP]
Compton, Richard G.

Título da Revista

ISSN da Revista

Título de Volume

Editor

Wiley-v C H Verlag Gmbh

Resumo

A nickel modified boron doped diamond (Ni-BDD) electrode and nickel foil electrode were used in the determination of methanol in alkaline solutions. The Ni-BDD electrode was electrodeposited from a 1 mM Ni(NO(3))(2) solution (pH 5), followed by repeat cycling in KOH. Subsequent analysis utilised the Ni(OH)(2)/NiOOH redox couple to electrocatalyse the oxidation of methanol. Methanol was determined to limits of 0.3 mM with a sensitivity of 110 nA/mM at the Ni-BDD electrode. The foil electrode was less sensitive achieving a limit of 1.6 mM and sensitivity of 27 nA/mM. SEM analysis of the electrodes found the Ni-BDD to be modified by a quasi-random microparticle array.

Descrição

Palavras-chave

Nickel microparticles, Boron doped diamond, Electrocatalysis, Alcohol oxidation, Fuel cells

Como citar

Electroanalysis. Weinheim: Wiley-v C H Verlag Gmbh, v. 22, n. 5, p. 491-500, 2010.