Subject: Chemical sciences
Year: 2008
Type: Article
Type: PeerReviewed
Title: Probing of the Voltammetric Features of Graphite Electrodes Modified with Mercaptoundecanoic Acid Stabilized Gold Nanoparticles
Author: Gulaboski, Rubin
Author: Chirea, Mariana
Author: Pereira, Carlos M.
Author: Cordeiro, M Natália D S
Author: Costa, R.B.
Author: Silva, A. Fernando
Abstract: In this work we report on the remarkable voltammetric features of graphite electrodes, which were modified with mercaptoundecanoic acid derivatized gold nanoparticles (Au-MUA NPs) by simple adsorption from basic aqueous solution. Atomic force microscopy measurements proved a fairly uniform adsorption of the nanoparticles in the form of clusters, and consecutive island formation. The electrochemical features of the modified electrodes were probed by cyclic voltammetry, while using various redox probes in several different setups. The catalytic effects of the adsorbed clusters on the graphite electrodes proved to be highly reproducible, time dependent, and of nonselective nature. The main advantages of the proposed methodology are seen by the simplicity of the modification procedure, the stability of the self-assembled gold nanoparticle film, their applicability in various voltammetric scenarios, and the potential employment of the Au-MUA NP modified electrodes as sensors for various systems.
Publisher:
Relation: https://eprints.ugd.edu.mk/132/
Identifier: oai:eprints.ugd.edu.mk:132
Identifier: https://eprints.ugd.edu.mk/132/1/__ugd.edu.mk_private_UserFiles_rubin.gulaboski_Desktop_GULABOSKI-MY%20pdf%20PUBLICATIONS_Au-nano-on-graphite-JPC2008.pdfIdentifier: Gulaboski, Rubin and Chirea, Mariana and Pereira, Carlos M. and Cordeiro, M Natália D S and Costa, R.B. and Silva, A. Fernando (2008) Probing of the Voltammetric Features of Graphite Electrodes Modified with Mercaptoundecanoic Acid Stabilized Gold Nanoparticles. Journal of Physical Chemistry C, 112 (7). pp. 2428-2435. ISSN 1932-7447
Identifier: doi:10.1021/jp709670j
