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https://doi.org/10.5599/jese.674

A novel dopamine electrochemical sensor based on La3+/ZnO nanoflower modified graphite screen printed electrode

Somayeh Tajik ; Research Center for Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran
Hadi Beitollahi ; Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
Mohammad Reza Aflatoonian ; Research Center for Tropical and Infectious Diseases, Kerman University of Medical Sciences, Kerman, Iran

Puni tekst: engleski, pdf (421 KB) str. 187-195 preuzimanja: 260* citiraj
APA 6th Edition
Tajik, S., Beitollahi, H. i Aflatoonian, M.R. (2019). A novel dopamine electrochemical sensor based on La3+/ZnO nanoflower modified graphite screen printed electrode. Journal of Electrochemical Science and Engineering, 9 (3), 187-195. https://doi.org/10.5599/jese.674
MLA 8th Edition
Tajik, Somayeh, et al. "A novel dopamine electrochemical sensor based on La3+/ZnO nanoflower modified graphite screen printed electrode." Journal of Electrochemical Science and Engineering, vol. 9, br. 3, 2019, str. 187-195. https://doi.org/10.5599/jese.674. Citirano 03.08.2021.
Chicago 17th Edition
Tajik, Somayeh, Hadi Beitollahi i Mohammad Reza Aflatoonian. "A novel dopamine electrochemical sensor based on La3+/ZnO nanoflower modified graphite screen printed electrode." Journal of Electrochemical Science and Engineering 9, br. 3 (2019): 187-195. https://doi.org/10.5599/jese.674
Harvard
Tajik, S., Beitollahi, H., i Aflatoonian, M.R. (2019). 'A novel dopamine electrochemical sensor based on La3+/ZnO nanoflower modified graphite screen printed electrode', Journal of Electrochemical Science and Engineering, 9(3), str. 187-195. https://doi.org/10.5599/jese.674
Vancouver
Tajik S, Beitollahi H, Aflatoonian MR. A novel dopamine electrochemical sensor based on La3+/ZnO nanoflower modified graphite screen printed electrode. Journal of Electrochemical Science and Engineering [Internet]. 2019 [pristupljeno 03.08.2021.];9(3):187-195. https://doi.org/10.5599/jese.674
IEEE
S. Tajik, H. Beitollahi i M.R. Aflatoonian, "A novel dopamine electrochemical sensor based on La3+/ZnO nanoflower modified graphite screen printed electrode", Journal of Electrochemical Science and Engineering, vol.9, br. 3, str. 187-195, 2019. [Online]. https://doi.org/10.5599/jese.674

Sažetak
Flower-like La3+/ZnO nanocomposite was facile synthesized. A simple and ultrasensitive sensor based on graphite screen printed electrode (SPE) modified by La3+/ZnO nanoflower was developed for the electrochemical determination of dopamine. The electrochemical behavior of dopamine was studied in 0.1 M phosphate buffer solution (PBS) using cyclic voltammetry (CV), chronoamperometry (CA) and differential pulse voltammetry (DPV). Compared with the unmodified graphite screen printed electrode, the modified electrode facilitates the electron transfer of dopamine, since it notably increases the oxidation peak current of dopamine. Also, according to CV results the maximum oxidation of dopamine on La3+/ZnO/SPE occurs at 150 mV which is about 140 mV more negative compared with unmodified SPE. Under optimized conditions, the modified electrode exhibited a linear response over the concentration range from 0.15 to 300.0 μM, with a detection limit of 0.08 μM (S/N = 3). The proposed sensor exhibited a high sensitivity, good stability and was successfully applied for dopamine determination in dopamine ampoule, with high recovery.

Ključne riječi
Dopamine; sensor; graphite screen printed electrode; La3+/ZnO nanoflower

Hrčak ID: 219926

URI
https://hrcak.srce.hr/219926

Posjeta: 568 *