Electrochemical determination of nitroaromatic explosives using glassy carbon/multi walled carbon nanotube/polyethyleneimine electrode coated with gold nanoparticles.
Gold nanoparticles
Modified glassy carbon electrode
Multi−walled carbon nanotubes
Nitroaromatic explosives
Polyethyleneimine
Journal
Talanta
ISSN: 1873-3573
Titre abrégé: Talanta
Pays: Netherlands
ID NLM: 2984816R
Informations de publication
Date de publication:
01 Feb 2022
01 Feb 2022
Historique:
received:
14
10
2021
accepted:
20
10
2021
entrez:
3
12
2021
pubmed:
4
12
2021
medline:
15
12
2021
Statut:
ppublish
Résumé
The on site/in field detection of explosives has become a rising priority for homeland security and counter-terrorism measures. This work presents the sensitive detection of nitroaromatic explosives using glassy carbon/multi-walled carbon nanotubes/polyethyleneimine (GC/MWCNTs/PEI) electrode coated with gold nanoparticles (AuNPs). MWCNTs and PEI could be well dispersed in ethanol/water solution, giving rise to a thin and homogeneous film on GCE. The GC/MWCNTs/PEI electrode was electrochemically modified with AuNPs and used for the differential pulse voltammetric (DPV) detection of nitroaromatics. The enhanced detection sensitivities were achieved through π-π and charge-transfer (CT) interactions between the electron-deficient nitroaromatic explosives and donor amine groups in PEI to which gold nanoparticles were linked, providing increased analyte affinity toward the modified GCE. Calibration curves of current intensity versus concentration were linear in the range of 0.05-8 mg L
Identifiants
pubmed: 34857323
pii: S0039-9140(21)00912-7
doi: 10.1016/j.talanta.2021.122990
pii:
doi:
Substances chimiques
Explosive Agents
0
Nanotubes, Carbon
0
Gold
7440-57-5
Polyethyleneimine
9002-98-6
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
122990Informations de copyright
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