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Preparation of Graphene/MoS2 Composite for Detection of Dopamine
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Preparation of Graphene/MoS2 Composite for Detection of Dopamine

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Abstract:

A new composite of graphene/MoS2 is synthesized by co-exfoliation of graphite and MoS2 in isopropanol (IPA) using the organic salt potassium sodium tartrate as the assistant. The composite is characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectra. The results of TEM, XPS, and Raman spectra all illustrate that the graphene/MoS2 composite has been synthesized successfully. Furthermore, the composite is modified on glassy carbon electrode to fabricate a sensor to detect dopamine (DA). The sensor shows two linear detection ranges for DA. One is 1-45 μM and the other is 45-120 μΜ. The detection limit of the sensor (S/N=3) is 0.76 μM.

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Periodical:

Key Engineering Materials (Volume 905)

Pages:

192-197

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.905.192

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Online since:

January 2022

Authors:

Lin Lin Cai, Xiao Qing Jiang*

Keywords:

Dopamine, Graphene, MoS2, Sensor

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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