Synthesis of graphene/carbon nanofiber for electrochemical determination of levodopa in the presence of uric acid

Carbon nanofiber (CNF) was prepared by electrospinning using polypropylene and nickel was coated on the CNF by electroless plating. Then, graphene (Gr) was synthesized on the surface of nickel by chemical vapor deposition. After etching nickel, the Gr/CNF was obtained eventually and then used as a w...

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Bibliographic Details
Published in:Ionics 2019-06, Vol.25 (6), p.2835-2843
Main Authors: Wang, Wan Qiu, Yue, Hong Yan, Yu, Ze Min, Huang, Shuo, Song, Shan Shan, Gao, Xin, Guan, En Hao, Zhang, Hong Jie, Wang, Zhao
Format: Article
Language:English
Subjects:
Carbon fibers
Chemical vapor deposition
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Electrochemistry
Electrodes
Electroless plating
Energy Storage
Graphene
Morphology
Nanofibers
Nickel
Optical and Electronic Materials
Organic chemistry
Original Paper
Raman spectroscopy
Renewable and Green Energy
Reproducibility
Scanning electron microscopy
Selectivity
Uric acid
Urine
Voltammetry
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Summary:Carbon nanofiber (CNF) was prepared by electrospinning using polypropylene and nickel was coated on the CNF by electroless plating. Then, graphene (Gr) was synthesized on the surface of nickel by chemical vapor deposition. After etching nickel, the Gr/CNF was obtained eventually and then used as a working electrode for the determination of levodopa in the presence of uric acid by cyclic voltammetry and differential pulse voltammetry. The morphology and structure were investigated by scanning electron microscopy and Raman spectroscopy, respectively. The results indicate that the electrode exhibits a high sensitivity of 0.26 μA·μM −1 and a low measured limit of detection of 1 μM for levodopa in the range of 1–60 μM. The electrode shows excellent selectivity, reproducibility, and stability. It was also applied to determine levodopa in the spiked human urine samples.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-018-2801-2