Electrochemical determination of methimazole using nanoporous gold film electrode modified with MoO2 thin film
| Autor: | Hossein Salavati, Nahid Tavakkoli, Mehrnoosh Sadeghi, Nasrin Soltani |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Nanoporous 010401 analytical chemistry Oxide 02 engineering and technology 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound chemistry Electrode Differential pulse voltammetry Cyclic voltammetry Thin film 0210 nano-technology Layer (electronics) Spectroscopy Nuclear chemistry |
| Zdroj: | Microchemical Journal. 150:104153 |
| ISSN: | 0026-265X |
| DOI: | 10.1016/j.microc.2019.104153 |
| Popis: | In this paper, the fabrication of a thin film of molybdenum(IV) oxide on nanoporous gold film (MoO2/Cu-NPGF) electrode is reported by a facile and new method. The procedure included the under-potential deposition (UPD) of copper on the NPGF, and then spontaneous replacement of the Cu layer with a thin film of MoO2.The electrochemical behavior of methimazole on MoO2/Cu-NPGF electrode was investigated by differential pulse voltammetry (DPV) and cyclic voltammetry (CV). MoO2/Cu-NPGF showed an excellent performance towards electrochemical oxidation of methimazole with a high sensitivity and a low detection limit 3.5 × 10-9 mol/L for methimazole and a remarkable decrease in the anodic over-potential. The results showed that the differential pulse response of methimazole was linear in the concentration range of 1.0 × 10−-8 to 3.0 × 10-5mol/L with a linear coefficient of 0.994. Moreover, this electrode remarkably showed good repeatability, rapid response, stability and selectivity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect