The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile
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 / trinitrotolueneSource:
Journal of Electroanalytical Chemistry, 2010, 648, 1, 1-7Publisher:
- 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
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 .