Electrochemical Sensor Based on Mgo@PANI@CNT Nanocomposites for Simultaneous Detection of Cd2+ and Pb2+

Afef Dhaffouli*; Emna Ali; Sondes Guesmi; Pedro A Salazar-Carballo; Houcine Barhoumi

**Afef Dhaffouli*, Emna Ali, Sondes Guesmi, Pedro A Salazar-Carballo and Houcine Barhoumi**

Volume5-Issue11
Dates: Received: 2024-09-10 | Accepted: 2024-11-19 | Published: 2024-11-21
Pages: 1503-1510

Abstract

The high adsorption capacities of Polyaniline (PANI) and Carbon Nanotubes (CNTs) for heavy metals, combined with the synergistic effect of Magnesium Oxide (MgO), were leveraged to develop a modified Glassy Carbon Electrode (GCE), referred to as MgO@PANI@CNT/GCE, for the accurate detection of Cd²+ and Pb²⁺ ions. A comprehensive investigation of the electrochemical response of the MgO@PANI@CNT/GCE was carried out using Differential Pulse Voltammetry (DPV). A systematic optimisation of the electrochemical parameters, including the pH of the buffer solution, the amount of MgO@PANI@CNT on the electrode surface, and the drying time, was carried out. Under optimal conditions, the MgO@PANI@CNT/GCE sensor showed a linear response in the concentration range from 10-8 to 2.5 × 10-7 M. The lowest detectable concentrations for Cd2+ and Pb2+ were measured as 5 × 10-8 M and 2.5 × 10-8 M, respectively. The sensor exhibited excellent stability and reproducibility, and its practical utility was confirmed through the successful detection of Cd²⁺ and Pb²⁺ in river water samples, highlighting its effectiveness for real-world applications.

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FullText HTML FullText PDF DOI: 10.37871/jbres2038

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How to cite this article

Dhaffouli A, Ali E, Guesmi S, Salazar-Carballo PA,Barhoumi H. Electrochemical Sensor Based on Mgo@PANI@ CNT Nanocomposites for Simultaneous Detection of Cd2+ and Pb2+. J Biomed Res Environ Sci. 2024 Nov 21; 5(11): 1503-1510. doi: 10.37871/jbres2038, Article ID: JBRES2038, Available at: https://www.jelsciences.com/articles/jbres2038.pdf

Subject area(s)

Environmental Contamination

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