Voltammetric behavior of 3,5-dinitrobenzoic acid in solution on GCE and encapsulated on multiwalled carbon nanotube modified electrode
Artículo

Publication date
2016Metadata
Show full item record
Cómo citar
Moscoso Cabello, Raúl Andrés
Cómo citar
Voltammetric behavior of 3,5-dinitrobenzoic acid in solution on GCE and encapsulated on multiwalled carbon nanotube modified electrode
Abstract
The cyclic voltammetric behavior of 3,5-dinitrobenzoic acid (3,5-DNB) in 0.1 M PBS of pH 7 was examined at a glassy carbon electrode (GCE). 3,5 -DNB was found to produce two irreversible reduction peaks corresponding to the reduction of each nitro group in the 3,5 -DNB molecule. Our results contradict previous studies (P. Gopal et al. Journal of Molecular Liquids 178 (2013) 168-174) wherein the same peaks are assigned as, the first, to the reduction of the nitro group to hydroxylamine and the second, to the subsequent reduction to amine derivative.
Also we report that GCE modified with multiwalled carbon nanotubes (MWCNTs) can be derivatized with 3,5 DNB. The derivatization procedure involves simple immersion of the MWCNT-modified electrode in a solution containing 3,5 -DNB.
SEM images reveal that the network of nanotubes form a homogeneous, twisted, densely packed, three-dimensional array that remains attached to the GCE surface. Both electrochemical and SEM measurements indicate that 3,5-DNB is encapsulated on the electrode, most probably by being trapped within the pockets of the mentioned three-dimensional array, without formation of covalent bonding.
Patrocinador
FONDECYT
1130160
Indexation
Artículo de publicación ISI
Identifier
URI: https://repositorio.uchile.cl/handle/2250/140972
DOI: 10.1016/j.jelechem.2015.08.010
Quote Item
Journal of Electroanalytical Chemistry 765 (2016) 149–154
Collections
The following license files are associated with this item: