Article
Effects of Size and Concentration of Gold Nanoparticles on Diffusion Coefficient of Redox Species Fe(CN)64−
ECS Electrochemistry Letters
(2013)
Abstract
The diffusion coefficient (D) of a redox species ferrocyanide in electrolyte solutions containing gold nanoparticles was measured by cyclic voltammetry. It was found that D value depends on the content of gold nanoparticles in the electrolyte solutions. The existence of the gold nanoparticles may have blocked the diffusion of the redox species and hence reduce the apparent diffusion coefficient. At the same total gold concentration (in ppm), smaller gold nanoparticles (5 nm) demonstrate an overall more significant blocking effect compared to larger ones (15 nm) because of the larger total area occupied by all the 5 nm gold nanoparticles.
Disciplines
Publication Date
2013
DOI
10.1149/2.007310eel
Citation Information
Raymond C. Fox, Lan T. Nguyen, Lance R. Henshaw and Lei Yu. "Effects of Size and Concentration of Gold Nanoparticles on Diffusion Coefficient of Redox Species Fe(CN)64−" ECS Electrochemistry Letters Vol. 2 Iss. 10 (2013) p. H40 - H42 ISSN: 2162-8726 Available at: http://works.bepress.com/lei-yu/3/