Microchimica Acta

, Volume 183, Issue 7, pp 2267–2275 | Cite as

Determination of dopamine using a glassy carbon electrode modified with a graphene and carbon nanotube hybrid decorated with molybdenum disulfide flowers

  • Veerappan Mani
  • Mani Govindasamy
  • Shen-Ming Chen
  • Raj Karthik
  • Sheng-Tung HuangEmail author
Original Paper


We describe a hybrid material that consists of molybdenum sulfide flowers placed on graphene nanosheets and multiwalled carbon nanotubes (GNS-CNTs/MoS2). It was deposited on a glassy carbon electrode (GCE) which then is well suited for sensitive and selective determination of dopamine. The GNS-CNTs/MoS2 nanocomposite was prepared by a hydrothermal method and characterized by scanning electron and transmission emission microscopies, energy-dispersive X-ray spectroscopy, cyclic voltammetry, differential pulse voltammetry and electrochemical impedance spectroscopy. Electrochemical studies show the composite to possess excellent electrochemical properties such as a large electrochemically active surface, high capacitance current, a wide potential window, high conductivity and large porosity. The electrode displays excellent electrocatalytic ability to oxidize dopamine. The modified GCE, best operated at a working potential as low as 0.15 V (vs. Ag/AgCl), responds linearly to dopamine in the 100 nM to 100 μM concentration range. The detection limit is 50 nM, and the sensitivity is 10.81 (± 0.26) μA⋅μM−1⋅cm−2. The sensor has good selectivity, appreciable stability, repeatability and reproducibility. It was applied to the determination of dopamine in (spiked) biological and pharmaceutical samples.

Graphical abstract

A sensitive and selective dopamine sensor was developed using molybdenum disulfide flowers decorated graphene and multiwalled carbon nanotubes composite. The linear range of the sensor is from 100 nM to 100 μM, and detection limit is 50 nM


Parkinson disease Nanomaterials Nanocomposite Carbon nanostructures Metal dichalcogenide nanosheets Cyclic voltammetry Differential pulse voltammetry Scanning electron microscopy, rat brain analysis Serum analysis 



This work was supported by the Ministry of Science and Technology, Taiwan (NSC 103-2811-M-027-002 and 102-2113-M-027-002-MY3).

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Supplementary material

604_2016_1864_MOESM1_ESM.docx (932 kb)
ESM 1 (DOCX 931 kb)


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Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  • Veerappan Mani
    • 1
  • Mani Govindasamy
    • 1
  • Shen-Ming Chen
    • 1
  • Raj Karthik
    • 1
  • Sheng-Tung Huang
    • 1
    • 2
    Email author
  1. 1.Department of Chemical Engineering and BiotechnologyNational Taipei University of TechnologyTaipeiTaiwan
  2. 2.Institute of Biochemical and Biomedical EngineeringNational Taipei University of TechnologyTaipeiTaiwan

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