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The use of polymer/carbon based material as an efficient and low-cost electrochemical sensor for rapid electrochemical detection of dopamine

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(7), pp.1993-2001
  • DOI : 10.1007/s42823-023-00537-9
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : January 17, 2023
  • Accepted : May 20, 2023
  • Published : December 1, 2023

Akin Merve 1 Bayat Ramazan 1 Bekmezci Muhammed 1 Coguplugil Zeynep Kazel 1 Sen Fatih 1 Baghayeri Mehdi 2 Kaffash Afsaneh 3 Tehranejad-Javazmi Fatemah 4 Sheikhshoaie Iran 4

1Sen Research Group, Department of Biochemistry, Dumlupinar University, Kutahya, Turkey
2Department of Chemistry, Faculty of Science, Hakim Sabzevari University, PO. Box 397, Sabzevar, Iran
3Department of Internal Medicine, Faculty of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran
4Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, Iran

Accredited

ABSTRACT

In this research, reduced graphene oxide/polypyrrole (rGO/PPy) particles were synthesized and used to measure the amount of dopamine (DA) electrochemically. The obtained rGO/PPy particle was characterized by Fourier Transform Infrared Spectrophotometer (FTIR), UV–Visible Spectrophotometer (UV–Vis), and X-Ray Diffraction Diffractometry (XRD). To investigate the DA sensor performance, cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to acquire electrochemical measurements of the sensor. Current values of 1.65 and 5.9 mA were observed in the CV at 0.2 mM and 1.2 mM concentrations of target molecule, respectively. Under optimized conditions, the linear calibration plots were found to exhibit significant sensitivity in the linear range of 0.2 and 1.2 mM, with a corresponding detection limit of 0.061 μM for DA. The results obtained were similar to the sensor results of DA made using precious metals. This work was a demonstration of the feasibility of high-sensitivity electrochemical analysis with conductive carbon materials without the use of precious metals. It was also observed that the cost-effective rGO/PPy exhibited a very high potential for DA detection.

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