Anuar, Nadzirah Sofia and Basirun, Wan Jeffrey and Shalauddin, Md and Akhter, Shamima (2020) A dopamine electrochemical sensor based on a platinum-silver graphene nanocomposite modified electrode. RSC Advances, 10 (29). pp. 17336-17344. ISSN 2046-2069, DOI https://doi.org/10.1039/c9ra11056a.
Full text not available from this repository.Abstract
A platinum-silver graphene (Pt-Ag/Gr) nanocomposite modified electrode was fabricated for the electrochemical detection of dopamine (DA). Electrochemical studies of the Pt-Ag/Gr nanocomposite towards DA detection were performed by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The CV analysis showed that Pt-Ag/Gr/GCE had enhanced electrocatalytic activity towards DA oxidation due to the synergistic effects between the platinum-silver nanoparticles and graphene. The DPV results showed that the modified sensor demonstrated a linear concentration range between 0.1 and 60 mu M with a limit of detection of 0.012 mu M. The Pt-Ag/Gr/GCE presented satisfactory results for reproducibility, stability and selectivity. The prepared sensor also showed acceptable recoveries for a real sample study.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Amines; Chemical detection; Cyclic voltammetry; Electrochemical electrodes |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Divisions: | Faculty of Science Faculty of Science > Department of Chemistry |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 01 Dec 2023 02:59 |
| Last Modified: | 01 Dec 2023 02:59 |
| URI: | http://eprints.um.edu.my/id/eprint/36697 |
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