Large-scale self-assembly of hydrophilic gold nanoparticles at oil/water interface and their electro-oxidation for nitric oxide in solution

TitleLarge-scale self-assembly of hydrophilic gold nanoparticles at oil/water interface and their electro-oxidation for nitric oxide in solution
Publication TypeJournal Article
Year of Publication2008
AuthorsLi YJ, Liu C, Yang MH, He Y, Yeung ES
Journal TitleJournal of Electroanalytical Chemistry
Volume622
Pages103-108
Date Published10
Type of ArticleArticle
ISBN Number1572-6657
Accession NumberISI:000260235200015
KeywordsARRAYS, biosensor, ELECTROCATALYTIC REDUCTION, Electrochemistry, films, GLASSY-CARBON ELECTRODE, Gold nanoparticles, interface, metal, monolayer, Nitric oxide, oxidation, RELEASE, Self-assembly, SENSOR
Abstract

Mono-/bi-layer Au nanoparticle films with large areas were prepared by the assembly of Au nanoparticles in aqueous colloid at toluene/water interfaces, which can be transferred onto the hydrophilic solid surface and adhere strongly to the substrate without any binding agent. The transferred Au nanoparticle films exhibited satisfactory catalytic performance for electro-oxidizing nitric oxide (NO) in solution, and had a low detection limit (2.7 x 10(-8) mol/L), a rapid response time (less than 0.5 s) and a wide linear range (5.0 x 10(-8)-1.0 x 10(-5) mol/L) for the detection of NO in solution. UV-vis spectra, cyclic voltammetry and chronoamperometry were conducted to characterize the prepared Au nanoparticle films. (C) 2008 Elsevier B.V. All rights reserved.

DOI10.1016/j.jelechem.2008.05.007
Alternate JournalJ. Electroanal. Chem.