Electrodeposition of gold nanoparticles at a solid|ionic liquid|aqueous electrolyte three-phase junction

Gold nanoparticles have been electrodeposited on an electrode through electrogeneration at an ITO|AuCl 4 − solution in an ionic liquid|aqueous electrolyte three-phase junction. The electrodeposition was carried out by inverted double-pulse potential chronoamperometry. The direct reduction of AuCl 4...

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Bibliographic Details
Published inElectrochemistry communications Vol. 12; no. 12; pp. 1742 - 1745
Main Authors Kaminska, Izabela, Niedziolka-Jonsson, Joanna, Roguska, Agata, Opallo, Marcin
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2010
Subjects
Glucose
Gold nanoparticles
Ionic liquid
Liquid–liquid interface
Three-phase junction
Liquid–liquid interface
Glucose
Gold nanoparticles
Three-phase junction
Ionic liquid
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Summary:Gold nanoparticles have been electrodeposited on an electrode through electrogeneration at an ITO|AuCl 4 − solution in an ionic liquid|aqueous electrolyte three-phase junction. The electrodeposition was carried out by inverted double-pulse potential chronoamperometry. The direct reduction of AuCl 4 − ions at the electrode is followed by a counterion transfer through the liquid|liquid interface. Contrary to the electrodeposition from a single ionic liquid phase, scanning electron microscopy reveals that the shape of the resulting nanoparticles is highly angular and well-developed with a diameter of 110 ± 30 nm. Catalytic oxidation of glucose on the modified electrode is demonstrated.
ISSN:1388-2481
1873-1902
DOI:10.1016/j.elecom.2010.10.011