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 (3M 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 mu M and 0.11-4.40 mu M for two different scan rates, 200 my s(-1) and 20 mV s(-1), respectively. The detection limit was 0.11 mu M. 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.
Keywords:
Trinitrotoluene / Electrochemical reduction / Platinum / AcetonitrileSource:
Journal of Electroanalytical Chemistry, 2010, 648, 1, 1-7Publisher:
- Elsevier
Funding / projects:
- Modifikacija metalnih i nemetalnih materijala elektroprovodnim polimerima za primenu u novim tehnologijama (RS-142044)
- Mezoporozni i nanomaterijali u katalitičkim i sorpcionim procesima (RS-166001)
DOI: 10.1016/j.jelechem.2010.07.008
ISSN: 1572-6657
WoS: 000282399400001
Scopus: 2-s2.0-77956411619
Collections
Institution/Community
IHTMTY - JOUR AU - Marinović, Vedrana M. AU - Marinović, Sanja AU - Jovanović, M. AU - Jovanovic, J. AU - Štrbac, Svetlana PY - 2010 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/720 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 (3M 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 mu M and 0.11-4.40 mu M for two different scan rates, 200 my s(-1) and 20 mV s(-1), respectively. The detection limit was 0.11 mu M. 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. PB - Elsevier T2 - Journal of Electroanalytical Chemistry T1 - The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile VL - 648 IS - 1 SP - 1 EP - 7 DO - 10.1016/j.jelechem.2010.07.008 ER -
@article{ author = "Marinović, Vedrana M. and Marinović, Sanja and Jovanović, M. and Jovanovic, J. and Štrbac, Svetlana", year = "2010", 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 (3M 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 mu M and 0.11-4.40 mu M for two different scan rates, 200 my s(-1) and 20 mV s(-1), respectively. The detection limit was 0.11 mu M. 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.", publisher = "Elsevier", journal = "Journal of Electroanalytical Chemistry", title = "The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile", volume = "648", number = "1", pages = "1-7", doi = "10.1016/j.jelechem.2010.07.008" }
Marinović, V. M., Marinović, S., Jovanović, M., Jovanovic, J.,& Štrbac, S.. (2010). The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile. in Journal of Electroanalytical Chemistry Elsevier., 648(1), 1-7. https://doi.org/10.1016/j.jelechem.2010.07.008
Marinović VM, Marinović S, Jovanović M, Jovanovic J, Štrbac S. The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile. in Journal of Electroanalytical Chemistry. 2010;648(1):1-7. doi:10.1016/j.jelechem.2010.07.008 .
Marinović, Vedrana M., Marinović, Sanja, Jovanović, M., Jovanovic, J., Štrbac, Svetlana, "The electrochemical reduction of trinitrotoluene on a platinum wire modified by chemisorbed acetonitrile" in Journal of Electroanalytical Chemistry, 648, no. 1 (2010):1-7, https://doi.org/10.1016/j.jelechem.2010.07.008 . .