Development of an Electrochemical Biosensor Based on Carbon Nanotubes and Benzocrown for the Detection of Cd+2 ions

Authors

Ameur Amara
Laboratory of sensors, instrumentations and processes (LCIP), Abbes Laghrour Khenchela University, Khenchela, Algeria.
Amina Touati
Laboratory of sensors, instrumentations and processes (LCIP), Abbes Laghrour Khenchela University, Khenchela, Algeria.
Messaoud Benounis
Laboratory of sensors, instrumentations and processes (LCIP), Abbes Laghrour Khenchela University, Khenchela, Algeria.
Aissa Benselhoub
Environmental Research Center (C.R.E), Annaba, Algeria
Abderrezak Sabour
Laboratory of sensors, instrumentations and processes (LCIP), Abbes Laghrour Khenchela University, Khenchela, Algeria.

Synopsis

Cadmium (Cd2+) is an extremely potent heavy metal found in phosphate fertilizers, and its presence poses a significant risk to the safety of food. This is a pressing concern as it can cause severe health issues. Therefore, it is crucial to create effective analytical techniques to track these hazardous materials. To address this, a new biosensor has been developed with polyaniline, carbon nanotubes, and benzocrown immobilized on a glassy carbon electrode's surface via electropolymerization. Electrochemical cyclic voltammetry indicates that polyaniline electrodepositing, and nanocomposites have improved surface conductivity of GCE. A simple electrochemical biosensor for cadmium detection has been successfully fabricated with biopolymer nanocomposites PANI/SWCNT/BEZOCROWN on GCEs. The biosensor demonstrated a wide linear range (10-14mol/L_10-10mol/L), and a limit of detection of 0.45 × 10^10 M (S/N=3).

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Published
December 4, 2024