Nonenzymatic Glucose Sensor Based On Poly(3,4-Ethylene Dioxythiophene)/Electroreduced Graphene Oxide Modified Gold Electrode
| Autor: | Emir Çepni, Hülya Öztürk Doğan, Tuba Öznülüer Özer, Mesut Eryiğit, Bingül Kurt Urhan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Graphene Mechanical Engineering Inorganic chemistry Metals and Alloys 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry Ascorbic acid 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials law.invention X-ray photoelectron spectroscopy PEDOT:PSS Mechanics of Materials law Electrode Monolayer Materials Chemistry 0210 nano-technology Biosensor |
| Popis: | In this study, a nonenzymatic glucose sensor based on a Au electrode was modified using layered poly(3,4-ethylene dioxythiophene) (PEDOT) and electroreduced graphene oxide (ERGO). The modified electrode was characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). The electrochemical performance of the electrode material was evaluated to assess its use in glucose sensor applications. In addition, the effect of layer numbers of the layered composite on glucose activity was investigated. The monolayer PEDOT–ERGO nanocomposite exhibited high current density, high sensitivity, and low detection limit of approximately 5 mA cm−2, 696.9 μA mM−1 cm−2, and 0.12 μM, respectively. Moreover, an electrode interference test was conducted in the presence of various interfering species such as ascorbic acid, uric acid, dopamine, and H2O2, revealing excellent selectivity of the nonenzymatic glucose sensor. Thus, the PEDOT–ERGO modified Au electrode could be utilized as a promising nonenzymatic glucose biosensor. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|