Journal
CARBON LETTERS
Volume -, Issue -, Pages -Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s42823-023-00537-9
Keywords
Dopamine detection; Electrochemical sensor; Nanoparticle; Highly sensitive
Ask authors/readers for more resources
Reduced graphene oxide/polypyrrole (rGO/PPy) particles were synthesized and used as a high-sensitivity electrochemical sensor for dopamine (DA) detection. The sensor exhibited significant sensitivity in the linear range of 0.2 and 1.2 mM, with a detection limit of 0.061 mu M for DA. The cost-effective rGO/PPy showed great potential for DA detection without the use of precious metals.
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 mu M 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available