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عنوان
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Reduced graphene oxide decorated on Cu/CuO-Ag nanocomposite as a highperformance material for the construction of a non-enzymatic sensor: Application to the determination of carbaryl and fenamiphos pesticides
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نوع پژوهش
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مقاله چاپشده در مجلات علمی
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کلیدواژهها
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Reduced graphene oxide-Cu/CuO-Ag nanocomposite Simultaneous determination Pesticides Modified electrodes Electrochemical sensors
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چکیده
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A novel electrochemical sensor based on the reduced graphene oxide-Cu/CuO-Ag nanocomposite modified glassy carbon electrode (rGO/Cu/CuO-Ag/GCE) has been applied for the simultaneous analysis of carbaryl and fenamiphos as two important pesticides. The electrochemical behavior of carbaryl and fenamiphos at rGO/Cu/ CuO-Ag/GCE was studied by cyclic voltammetry and differential pulse voltammetry. The modified electrode exhibited two separated oxidation signals for the simultaneous determination of both carbaryl and fenamiphos with excellent sensitivity. The characteristics of the modified electrode were studied with transmission electron microscopy, X-ray diffraction and Fourier transform-infrared spectroscopy techniques. Under optimized conditions, the rGO/Cu/CuO-Ag/GCE detected carbaryl and fenamiphos with the wide linear ranges of 0.05–20 and 0.01–30 μM, and the detection limits were 0.005 and 0.003 μM, respectively. This developed electrochemical platform applied as a simple and cost-effective sensor for the detection of low levels of carbaryl and fenamiphos in fruit and vegetable samples successfully.
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پژوهشگران
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پگاه هاشمی (نفر اول)، نشمیل کریمیان (نفر دوم)، حسین خوشسفر (نفر سوم)، فابیانا آردویینی (نفر چهارم)، مهدی قمصری (نفر پنجم)، عباس افخمی عقداء (نفر ششم به بعد)، حسن باقری (نفر ششم به بعد)
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