Gold three dimensional film electrode prepared from oppositely charged nanoparticles

• Published in: Electrochemistry communications Vol. 13; no. 11; pp. 1170 - 1173
• Main Authors: Celebanska, Anna, Lesniewski, Adam, Paszewski, Maciej, Jonsson-Niedziolka, Martin, Niedziolka-Jonsson, Joanna, Opallo, Marcin
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01-11-2011; Amsterdam Elsevier; New York, NY
• Subjects: Chemistry; Electrochemistry; Electrodes: preparations and properties; Exact sciences and technology; General and physical chemistry; Glucose; Gold electrode; Gold nanoparticles; Kinetics and mechanism of reactions; Layer-by-layer; Other electrodes; Surface plasmon resonance; Gold electrode; Surface plasmon resonance; Glucose; Gold nanoparticles; Layer-by-layer; Self-assembled layer; Self assembly; Atomic force microscopy; Scanning electron microscopy; Gold; Electrode production; Aldose; Basic solution; Nanoparticle; Transition metal; Surface structure; Electrocatalysis; Mixed multilayer; Thin layer electrode; Morphology; Oxidation; Electrochemical reaction; Organic compounds
• ISSN: 1388-2481; 1873-1902
• DOI: 10.1016/j.elecom.2011.08.051

Nanoparticulate gold film electrodes were prepared from oppositely charged gold nanoparticles (c.a. 6
nm diameter) by a layer-by-layer approach without application of linker molecules. This was done by alternative immersion of indium tin oxide plates into suspensions of positively and negatively charged particles. The thickness of the film and the magnitude of the characteristic surface plasmon band are proportional to the number of immersion and withdrawal steps. Up to nine double immersions and withdrawal steps can be used to systematically increase the amount of nanoparticulate gold material. The capacitive current density and current density of hydrogen peroxide reduction are proportional to the number of immersion and withdrawal steps. Highly efficient and low overpotential glucose electrooxidation in alkaline solution is demonstrated.
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► We prepared three dimensional gold film electrode by layer-by-layer method in the absence of linker. ► Electrode consists of gold nanoparticles of the opposite charge. ► The material has a highly developed electroactive surface. ► The magnitude of characteristic gold voltammetric signal is proportional to the amount of deposit. ► The electrode exhibits a catalytic effect for glucose oxidation.