Probing the surface oxidation of chemically synthesised gold nanospheres and nanorods

Plowman, Blake J., Thompson, Nathan, & O'Mullane, Anthony P. (2014) Probing the surface oxidation of chemically synthesised gold nanospheres and nanorods. Gold Bulletin, 47(3), pp. 177-183.

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Abstract

In this study, the electrochemical behaviour of commercially available gold spheres and rods stabilised by carboxylic acid and cetyl trimethyl ammonium bromide (CTAB) moieties, respectively, are investigated. The cyclic voltammetric behaviour in acidic electrolyte is distinctly different with the nanorods exhibiting unusual oxidative behaviour due to an electrodissolution process. The nanospheres exhibited responses typical of a highly defective surface which significantly impacted on electrocatalytic activity. A repetitive potential cycling cleaning procedure was also investigated which did not improve the activity of the nanorods and resulted in deactivating the gold spheres due to decreasing the level of surface defects.

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2 citations in Web of Science®

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ID Code: 71882
Item Type: Journal Article
Refereed: Yes
Keywords: Gold nanoparticles, Electrocatalysis, Active sites
DOI: 10.1007/s13404-014-0141-1
ISSN: 2190-7579
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Electrochemistry (030604)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Funding:
  • AOARD/FA2386-13-1-4073
Copyright Owner: The Author(s) 2014. This article is published with open access at SpringerLink.com
Deposited On: 21 May 2014 22:16
Last Modified: 29 Jun 2015 04:44

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