Gold nanoparticles show electroactivity: counting and sorting nanoparticles upon impact with electrodes

Yi-Ge Zhou; Neil V Rees; Jeseelan Pillay; Robert Tshikhudo; Sibulelo Vilakazi; Richard G Compton

doi:10.1039/c1cc16407d

Gold nanoparticles show electroactivity: counting and sorting nanoparticles upon impact with electrodes

Chem Commun (Camb). 2012 Jan 7;48(2):224-6. doi: 10.1039/c1cc16407d. Epub 2011 Nov 16.

Authors

Yi-Ge Zhou¹, Neil V Rees, Jeseelan Pillay, Robert Tshikhudo, Sibulelo Vilakazi, Richard G Compton

Affiliation

¹ Dept. of Chemistry, Physical & Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford OX1 3QZ, United Kingdom.

PMID: 22086114
DOI: 10.1039/c1cc16407d

Abstract

Gold nanoparticles (AuNPs) in aqueous 0.10 M HCl are shown to be electroactive at oxidising potentials greater than 1.0 V (vs. Ag/AgCl) by means of voltammetric monitoring of AuNP-electrode collisions. The method promises the use of anodic particle coulometry for the detection and characterisation of the AuNPs.