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Issue 85, 2014

Spectroelectrochemical synthesis of gold nanoparticles using cyclic voltammetry in the presence of a protective agent

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Abstract

Modification of electrodes with metal nanoparticles (NPs) is attracting intense interest because of the widespread applications of these electrodes as sensors in electroanalysis. In the present study, we have analysed the electrodeposition of gold nanoparticles (Au NPs) on a platinum electrode in the presence of polyvinylpyrrolidone using UV/Vis spectroelectrochemistry, which allows us to obtain in situ evidence on the kind of nanoparticles deposited on the electrode. Under the selected experimental conditions, it has been possible to understand the reaction pathway for the synthesis of Au NPs in a voltammetry experiment. We establish that generation of NPs of a specific size is dramatically favoured during the different oxidation and reduction processes. Experiments with and without protective agents revealed that NPs generation is favoured from the first cycle when a protective agent is present in solution.

Graphical abstract: Spectroelectrochemical synthesis of gold nanoparticles using cyclic voltammetry in the presence of a protective agent

Article information


Submitted
22 Jul 2014
Accepted
08 Sep 2014
First published
08 Sep 2014

RSC Adv., 2014,4, 45168-45173
Article type
Paper

Spectroelectrochemical synthesis of gold nanoparticles using cyclic voltammetry in the presence of a protective agent

C. Fernandez-Blanco, A. Heras, V. Ruiz and A. Colina, RSC Adv., 2014, 4, 45168 DOI: 10.1039/C4RA07451C

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