Article Dans Une Revue Journal of The Electrochemical Society Année : 2025

Design of a High-Performance Electrochemical Sensor Using ZnO@SiO2-n-propyl-NH2-benzotheura-AuNPs for the Selective and Sensitive Detection of Lead Ions in Environmental Samples

Résumé

This study presents the development of an innovative electrochemical sensor based on AuNPs-decorated ZnO@SiO2 and functionalized with n-propyl-NH2-BTU for the selective detection of lead ions. The synthesized material was characterized by transmission electron microscopy, scanning electron microscopy, and X-ray diffraction, which confirmed the successful incorporation of gold nanoparticles (AuNPs). Electrochemical measurements, using differential pulse voltammetry, revealed excellent selectivity of the modified electrode for Pb 2+ ions in the presence of competing metal ions. The sensor exhibited a low detection limit of 8.02 × 10 −10 M, calculated using the standard 3S/b method, and demonstrated three distinct linear ranges: 1 × 10 −9 to 1 × 10 –7 M, 1 × 10 –7 to 5 × 10 –7 M, and 5 × 10 –7 to 2.5 × 10 –6 M, highlighting its sensitivity over a broad concentration spectrum. Additionally, recovery experiments in tap water yielded recovery rates ranging from 82% and 116%, confirming reliability and reusability. These findings emphasize the sensor’s strong potential for accurate Pb2+ monitoring in environmental samples.

Fichier principal
Vignette du fichier
Manuscript.pdf (1.88 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05158738 , version 1 (11-07-2025)

Licence

Identifiants

Citer

Afef Dhaffouli, Younes Moussaoui, Pedro Salazar-Carballo, Michael Holzinger, Soledad Carinelli, et al.. Design of a High-Performance Electrochemical Sensor Using ZnO@SiO2-n-propyl-NH2-benzotheura-AuNPs for the Selective and Sensitive Detection of Lead Ions in Environmental Samples. Journal of The Electrochemical Society, 2025, 172 (6), pp.067520. ⟨10.1149/1945-7111/ade47f⟩. ⟨hal-05158738⟩
125 Consultations
147 Téléchargements

Altmetric

Partager

  • More