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The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile

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2010
Authors
Marinović, Vedrana
Marinović, Sanja
Jovanović, M.
Jovanović, J.
Štrbac, Svetlana
Article (Published version)
Metadata
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Abstract
The electrochemical reduction of 2,4,6-trinitrotoluene (TNT) was investigated by cyclic voltammetry on a platinum electrode in aqueous sodium chloride solutions with acetonitrile containing different concentrations of TNT. The obtained cyclic voltammograms showed three distinct reduction peaks in the potential range of -0.45 to -0.8 V (vs. an Ag/AgCl (3 M KCl) reference electrode), which refer to the multi-step process of TNT reduction. The calibration curves of the dependence of the first peak current on the TNT concentration were linear in the ranges 4.4-638.4 μM and 0.11-4.40 μM for two different scan rates, 200 mV s-1 and 20 mV s-1, respectively. The detection limit was 0.11 μM. Acetonitrile chemisorption on Pt surface took place and caused thus modified platinum electrode to exhibit an electrochemically stabile behaviour. Hence, a very high reproducibility over a prolonged time and voltammetric cycling was provided for using a Pt wire that is easy to handle as a suitable material ...for TNT sensing. Additionally, it was confirmed by testing the acetonitrile modified Pt wire for TNT detection in river water. © 2010 Elsevier B.V. All rights reserved.

Keywords:
platinum / acetonitrile / electrochemical reduction / trinitrotoluene
Source:
Journal of Electroanalytical Chemistry, 2010, 648, 1, 1-7
Publisher:
  • Elsevier
Projects:
  • Mezoporozni i nanomaterijali u katalitičkim i sorpcionim procesima (RS-166001)
  • Modifikacija metalnih i nemetalnih materijala elektroprovodnim polimerima za primenu u novim tehnologijama (RS-142044)

DOI: 10.1016/j.jelechem.2010.07.008

ISSN: 1572-6657

WoS: 000282399400001

Scopus: 2-s2.0-77956411619
[ Google Scholar ]
17
17
15
URI
http://dais.sanu.ac.rs/123456789/3415
Collections
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Marinović, Vedrana
AU  - Marinović, Sanja
AU  - Jovanović, M.
AU  - Jovanović, J.
AU  - Štrbac, Svetlana
PY  - 2010
UR  - http://dais.sanu.ac.rs/123456789/3415
AB  - The electrochemical reduction of 2,4,6-trinitrotoluene (TNT) was investigated by cyclic voltammetry on a platinum electrode in aqueous sodium chloride solutions with acetonitrile containing different concentrations of TNT. The obtained cyclic voltammograms showed three distinct reduction peaks in the potential range of -0.45 to -0.8 V (vs. an Ag/AgCl (3 M KCl) reference electrode), which refer to the multi-step process of TNT reduction. The calibration curves of the dependence of the first peak current on the TNT concentration were linear in the ranges 4.4-638.4 μM and 0.11-4.40 μM for two different scan rates, 200 mV s-1 and 20 mV s-1, respectively. The detection limit was 0.11 μM. Acetonitrile chemisorption on Pt surface took place and caused thus modified platinum electrode to exhibit an electrochemically stabile behaviour. Hence, a very high reproducibility over a prolonged time and voltammetric cycling was provided for using a Pt wire that is easy to handle as a suitable material for TNT sensing. Additionally, it was confirmed by testing the acetonitrile modified Pt wire for TNT detection in river water. © 2010 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile
SP  - 1
EP  - 7
VL  - 648
IS  - 1
DO  - 10.1016/j.jelechem.2010.07.008
ER  - 
@article{
author = "Marinović, Vedrana and Marinović, Sanja and Jovanović, M. and Jovanović, J. and Štrbac, Svetlana",
year = "2010",
url = "http://dais.sanu.ac.rs/123456789/3415",
abstract = "The electrochemical reduction of 2,4,6-trinitrotoluene (TNT) was investigated by cyclic voltammetry on a platinum electrode in aqueous sodium chloride solutions with acetonitrile containing different concentrations of TNT. The obtained cyclic voltammograms showed three distinct reduction peaks in the potential range of -0.45 to -0.8 V (vs. an Ag/AgCl (3 M KCl) reference electrode), which refer to the multi-step process of TNT reduction. The calibration curves of the dependence of the first peak current on the TNT concentration were linear in the ranges 4.4-638.4 μM and 0.11-4.40 μM for two different scan rates, 200 mV s-1 and 20 mV s-1, respectively. The detection limit was 0.11 μM. Acetonitrile chemisorption on Pt surface took place and caused thus modified platinum electrode to exhibit an electrochemically stabile behaviour. Hence, a very high reproducibility over a prolonged time and voltammetric cycling was provided for using a Pt wire that is easy to handle as a suitable material for TNT sensing. Additionally, it was confirmed by testing the acetonitrile modified Pt wire for TNT detection in river water. © 2010 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile",
pages = "1-7",
volume = "648",
number = "1",
doi = "10.1016/j.jelechem.2010.07.008"
}
Marinović V, Marinović S, Jovanović M, Jovanović J, Štrbac S. The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile. Journal of Electroanalytical Chemistry. 2010;648(1):1-7
Marinović, V., Marinović, S., Jovanović, M., Jovanović, J.,& Štrbac, S. (2010). The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile.
Journal of Electroanalytical ChemistryElsevier., 648(1), 1-7. 
https://doi.org/10.1016/j.jelechem.2010.07.008
Marinović Vedrana, Marinović Sanja, Jovanović M., Jovanović J., Štrbac Svetlana, "The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile" 648, no. 1 (2010):1-7,
https://doi.org/10.1016/j.jelechem.2010.07.008 .

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