Direct Electrodeposition of Gold Nanoparticles on Glassy Carbon Electrode for Selective Determination Catechol in the Presence of Hydroquinone
| Autor: | C. Maria Magdalane, M. Anbu Kulandainathan, B. Jeyaraj, Malik Maaza, K. Kaviyarasu, C. Jayakumar |
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| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Reproducibility Catechol Materials science Hydroquinone Glassy carbon electrode Inorganic chemistry Biomedical Engineering Bioengineering 02 engineering and technology General Chemistry Mixed solution 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Colloidal gold General Materials Science 0210 nano-technology |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 18:4544-4550 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2018.15307 |
| Popis: | A simple and reliable voltammetric sensor for simultaneous determination of Catechol (CT) and Hydroquinone (HQ) was developed by electrodepositing the gold nanoparticles on the surface of the Glassy Carbon Electrode (GCE). The cyclic voltammograms in a mixed solution of CT and HQ have shown that the oxidation peaks become well resolved and were separated by 110 mV, although the bare GCE gave a single broad oxidation peak. Moreover, the oxidation peak currents of both CT and HQ were remarkably increased three times in comparison with the bare GCE. This makes gold nanoparticles deposited GCE a suitable candidate for the determination of these isomers. In the presence of 1 mM HQ isomer, the oxidation peak currents of differential pulse voltammograms are proportional to the concentration of CT in the range of 21 μM to 323 μM with limit of detection 3.0 μM (S/N = 3). The proposed sensor has some important advantages such as low cost, ease of preparation, good stability and high reproducibility. |
| Databáze: | OpenAIRE |
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