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Collisional electrochemistry of laser-ablated gold nanoparticles by electrocatalytic oxidation of glucose

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Authors
Liu, Y.
Austen, B.
Cornwell, T.
Tilbury, R.
Buntine, Mark
O'Mullane, A.
Arrigan, Damien
Date
2017
Type
Journal Article

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Liu, Y. and Austen, B. and Cornwell, T. and Tilbury, R. and Buntine, M. and O'Mullane, A. and Arrigan, D. 2017. Collisional electrochemistry of laser-ablated gold nanoparticles by electrocatalytic oxidation of glucose. Electrochemistry Communications. 77: pp. 24-27.
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Electrochemistry Communications
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School of Science
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Abstract

We report the electrochemistry of gold nanoparticles (AuNPs), prepared by Laser Ablation Synthesis in Solution (LASiS), via the electrocatalytic oxidation of glucose upon single nanoparticle collisions at inert microelectrodes. Spherical AuNPs with diameters in the range 20–30 nm, as determined by transmission electron microscopy, were synthesized by LASiS of a gold plate immersed in water. Nanoparticle collisions were electrochemically detected through the AuNP-catalysed oxidation of glucose at carbon fiber microelectrodes in alkaline solution, enabling the electrocatalytic detection of single AuNPs. This approach provides a basis for detecting and understanding the electrocatalytic properties of pristine nanoparticles in aqueous solutions. © 2017 Elsevier B.V.