Electrochemical determination of levodopa in the presence of uric acid using ZnO nanoflowers-reduced graphene oxide

ZnO nanoflowers (ZnO NFs) were prepared by hydrothermal synthesis and graphene oxide nanosheets (GO NSs) were synthesized by the Hummer’s method. Then, ZnO NFs were dispersed in GO dispersion and sprayed onto ITO-coated glass. Finally, the ZnO NFs-GO NSs/ITO was annealed to form the ZnO NFs-rGO NSs/...

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Published in:Journal of materials science. Materials in electronics 2019-02, Vol.30 (4), p.3984-3993
Main Authors: Yue, Hong Yan, Wu, Peng Fei, Huang, Shuo, Gao, Xin, Wang, Zhao, Wang, Wan Qiu, Zhang, Hong Jie, Song, Shan Shan, Guo, Xin Rui
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Dispersion
Electrodes
Graphene
Materials Science
Nanorods
Optical and Electronic Materials
Selectivity
Uric acid
Zinc oxide
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cited_by cdi_FETCH-LOGICAL-c319t-99ccbc63338c743bb142af48d0365497b3f0cb95dbc76f8fea0ea3ea8327355c3
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container_title Journal of materials science. Materials in electronics
container_volume 30
creator Yue, Hong Yan
Wu, Peng Fei
Huang, Shuo
Gao, Xin
Wang, Zhao
Wang, Wan Qiu
Zhang, Hong Jie
Song, Shan Shan
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description ZnO nanoflowers (ZnO NFs) were prepared by hydrothermal synthesis and graphene oxide nanosheets (GO NSs) were synthesized by the Hummer’s method. Then, ZnO NFs were dispersed in GO dispersion and sprayed onto ITO-coated glass. Finally, the ZnO NFs-GO NSs/ITO was annealed to form the ZnO NFs-rGO NSs/ITO, acting as the electrode for the determination of levodopa (LD) under the interference of uric acid (UA). The results reveal that the ZnO NFs are made up of nanorods with the diameter of ∼ 150 nm and the length of ∼ 2 µm and ZnO NFs are covered by rGO NSs. The ZnO NFs-rGO NSs/ITO electrode exhibits an enhanced electrochemical response due to its excellent redox activity, which shows a high sensitivity (0.66 µA µM −1 ), low measured detection limit (1 µM) and excellent selectivity for determination of LD. The electrode was used to detect the LD in the actual sample of human serum for practical application, revealing satisfactory results.
doi_str_mv 10.1007/s10854-019-00684-8
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subjects Characterization and Evaluation of Materials
Chemistry and Materials Science
Dispersion
Electrodes
Graphene
Materials Science
Nanorods
Optical and Electronic Materials
Selectivity
Uric acid
Zinc oxide
title Electrochemical determination of levodopa in the presence of uric acid using ZnO nanoflowers-reduced graphene oxide
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