Electrochemical characterization of naproxen and the adsorbed naproxen oxidation products at glassy carbon electrode modified with carboxyl functionalized multi-walled carbon nanotubes and introducing a new route for naproxen determination

In the present work, a glassy carbon electrode was modified with carboxyl functionalized multi-walled carbon nanotubes (f-MWCNTs) to investigate the electrochemical behavior of naproxen (NAP) and the adsorbed NAP oxidation products (NAP op ) for the first time. Cyclic and linear sweep voltammetry te...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2023-09, Vol.27 (9), p.2375-2385
Main Authors: Moghadam, Atefeh Mousavi, Haghighi, Behzad
Format: Article
Language:English
Subjects:
Analytical Chemistry
Carbon
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Drinking water
Electrochemical analysis
Electrochemistry
Electrodes
Energy Storage
Glassy carbon
Multi wall carbon nanotubes
Naproxen
Original Paper
Oxidation
Physical Chemistry
Redox reactions
Route selection
Voltammetry
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Summary:In the present work, a glassy carbon electrode was modified with carboxyl functionalized multi-walled carbon nanotubes (f-MWCNTs) to investigate the electrochemical behavior of naproxen (NAP) and the adsorbed NAP oxidation products (NAP op ) for the first time. Cyclic and linear sweep voltammetry techniques were used for the electrochemical investigation of NAP and the adsorbed NAP op . The results showed that the mechanisms of the oxidation reaction of NAP and the redox reaction of the adsorbed NAP op were irreversible and reversible surface-controlled processes, respectively. Then, an indirect method was applied for the determination of NAP with a focus on the adsorbed NAP op . Programmed linear sweep voltammetry (LSV) was performed, and two linear relationships were observed between the peak current intensity of LSV responses of the adsorbed NAP op and the concentration of NAP in the range of 0.0–30.0 µM and 30.0–250.0 µM. The limit of detection and limit of quantification for NAP determination based on S/N = 3 and S/N = 10 were calculated to be 2.0 and 6.8 µM, respectively. The effect of the presence of some potent interfering compounds was examined, and the developed method was applied for the determination of NAP in tap water and NAP tablet samples with satisfactory results.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-023-05509-7