Single-Walled Carbon Nanotubes (SWCNTs), Ketjen Black (KB), and Gold Nanoparticles (AuNPs) Modified Glassy Carbon Electrode for Highly Selective Dopamine Sensing
| Authors | F. Ardyansyah1, M. Tominaga2, F. Kurniawan1 |
| Affiliations |
1Department of Chemistry, Institut Teknologi Sepuluh Nopember, 60111 Surabaya, Indonesia 2Department of Chemistry and Applied Chemistry, Saga University, 8408502 Saga, Japan |
| Е-mail | fredy@chem.its.ac.id |
| Issue | Volume 14, Year 2022, Number 3 |
| Dates | Received 24 March 2022; revised manuscript received 22 June 2022; published online 30 June 2022 |
| Citation | F. Ardyansyah, M. Tominaga, F. Kurniawan, J. Nano- Electron. Phys. 14 No 3, 03009 (2022) |
| DOI | https://doi.org/10.21272/jnep.14(3).03009 |
| PACS Number(s) | 81.05.Uw, 81.07.De, 82.80.fK, 82.47.Rs |
| Keywords | SWCNTs (2) , Glassy carbon electrode, Dopamine, Sensor (28) , Ketjen Black (2) , Gold nanoparticles (2) . |
| Annotation |
Modification of glassy carbon electrode (GCE) with single-walled carbon nanotubes (SWCNTs), Ketjen Black (KB), and gold nanoparticles (AuNPs) has been done. The modification was performed using drop coating method. Comparison performance between unmodified and modified GCE for detecting dopamine was carried out using cyclic voltammetry in 0.10 M acetate buffer solution (pH 4). It was performed in the potential range from – 0.80 V to 0.80 V with a scan rate of 100 mV/s at room temperature. The results showed that modified GCE could produce higher anodic peak currents than unmodified GCE. This indicates that the synergistic effect between SWCNTs, KB, and AuNPs has succeeded to improve the performance of GCE. The limit of detection (LOD) of modified GCE for dopamine solution was determined using a calibration curve which plots the concentration variation to the anodic peak current. The calculation of LOD was found to be 0.49 (M. Modified GCE showed good selectivity in dopamine without any interference signal from a solution of uric acid (UA), ascorbic acid (AA), glucose (Glu), and urea (U) in 0.10 M acetate buffer solution with pH 4. In this condition, only dopamine increases oxidation and reduction currents. The results indicated that modified GCE using SWCNTs, KB, and AuNPs can be used for highly selective dopamine sensing. |
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List of References |
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