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
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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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | nanoparticles, catalysis, sensors, DNA, Vitamin E |
| Subjects: | Natural sciences > Chemical sciences |
| Divisions: | Faculty of Agriculture |
| Depositing User: | Rubin Gulaboski |
| Date Deposited: | 31 Oct 2012 10:24 |
| Last Modified: | 21 Oct 2014 11:37 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/132 |
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