Ultra-Sensitive Determination of Fenitrothion Pesticide in Orange Juice by Gold-Printed Electrode Modified with AgNP/Carbon Dot/MWCNT Nanoarchitecture Employing Electrochemical Impedance Spectroscopy

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Data de publicação
2024
Periódico
Food Analytical Methods
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0
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Ferreira J.H.A.
Medeiros A.M.A.B.
Peres R.M.
Canevari T.C.
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© The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.This work describes the synthesis, characterization, and electrochemical application of innovative AgNP/carbon dot/MWCNT nanoarchitecture. Silver nanoparticles (AgNPs) have been obtained by directly reducing silver nitrate salt in carbon dot/MWCNT alcoholic solution. UV–vis spectroscopy, HR-TEM, XPS, and electrochemical techniques have characterized this nanoarchitecture. The AgNP/carbon dot/MWCNT nanoarchitecture has been dispersed on a gold-printed electrode surface, showing excellent electrocatalytic activity for fenitrothion determination in acetate buffer, pH 4.5, by impedance electrochemistry spectroscopy with a detection limit of 0.48 nmol L−1. The fenitrothion pesticide detection was also performed in orange juice and did not suffer significant interference from other pesticides. Graphical Abstract: (Figure presented.).
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AgNP/carbon dot/MWCNT , Carbon dots , Fenitrothion , Fenitrothion pesticide , Hybrid nanostructures , MWCNT's , Nano-architecture , Orange juice , Printed electrodes
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