article · Analytical Chemistry Letters
AbstractIn this work, a simple and innovative fabrication strategy was developed by electrodeposition procedures to combine a film of deposited silver nanoparticles (Ag- NPs) on multi-walled carbon nanotubes to fabricate an Ag- NPs@MWNTC&CPE sensor to detect the active principle of Ronidazole. The physicochemical nature of Ag- NPs@MWNTC&CPE nanocomposite, their texture and morphology were characterized by XRD and SEM. The electrochemical results were performed using cyclic voltammetry, ESI and differential pulse voltammetry techniques. Under optimal experimental conditions, a highly electrocatalytic activity is observed, the reduction reaction of Ronidazole is controlled by a diffusion process with the participation of four electrons and four protons, and a strong potential shift of the reduction peak was measured at -0.58 V/ Ag- NPs@MWNTC&CPE vs Ag/AgCl. The developed sensor shows good selectivity in the presence of metal ions, biomolecules and similar nitro-containing drugs. The results showed that the cathodic current peak was linearly proportional to the concentration of Ronidazole in the range of 1.0×10−4 to 1 ×10−7 M with a detection limit of LOD=2.01×10−8M. To analyze the practicality of the technique for the determination of Ronidazole in real samples of spiked chicken liver and muscle with satisfactory recoveries.Keywords: Multiwalled carbon nanotubeSilver nanoparticlesRonidazoleDifferential pulse voltammetryChicken liverChicken muscle
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DOI: 10.1080/22297928.2023.2263761
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