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Highly Sensitive Detection of Dopamine at Ionic Liquid Functionalized RGOZIF-8 Nanocomposite-Modified Electrode
Joint Authors
Cheng, Lei
Fan, Youjun
Shen, Xingcan
Liang, Hong
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-08-25
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
A hybrid and hierarchical nanocomposite was successfully prepared by the growth of zeolitic imidazolate framework-8 (ZIF-8) on the template of ionic liquid (IL, [Bmim][BF4]) functionalized reduced graphene oxide (IL-RGO).
The structure and morphology of the IL-RGO/ZIF-8 nanocomposite were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FTIR), and Raman spectroscopy.
The results showed that RGO sheets were refrained from restacking by IL, and ZIF-8 nanoparticles grew well on the surface of IL-RGO.
Owing to the synergistic effect from large surface area and excellent electrocatalytic activity of ZIF-8 and great electrical conductivity of IL-RGO, a highly sensitive sensor for dopamine (DA) can be obtained.
IL-RGO/ZIF-8-modified electrode exhibits good electrocatalytic activity and electroconductive properties towards DA which were investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS).
Compared with bare or IL-RGO-modified electrodes, the IL-RGO/ZIF-8-modified electrode effectively depressed the oxidation overpotential of DA.
The linear response range of DA was from 1.0×10−7 to 1.0×10−4 mol/L with a low detection of limit 3.5×10−8 mol/L.
In addition, the sensor was shown to provide satisfactory stability for the determination of DA.
American Psychological Association (APA)
Cheng, Lei& Fan, Youjun& Shen, Xingcan& Liang, Hong. 2019. Highly Sensitive Detection of Dopamine at Ionic Liquid Functionalized RGOZIF-8 Nanocomposite-Modified Electrode. Journal of Nanomaterials،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1183297
Modern Language Association (MLA)
Cheng, Lei…[et al.]. Highly Sensitive Detection of Dopamine at Ionic Liquid Functionalized RGOZIF-8 Nanocomposite-Modified Electrode. Journal of Nanomaterials No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1183297
American Medical Association (AMA)
Cheng, Lei& Fan, Youjun& Shen, Xingcan& Liang, Hong. Highly Sensitive Detection of Dopamine at Ionic Liquid Functionalized RGOZIF-8 Nanocomposite-Modified Electrode. Journal of Nanomaterials. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1183297
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1183297