One-pot hydrothermal synthesis of amine-functionalized metal–organic framework/ reduced graphene oxide composites for the electrochemical detection of bisphenol A
| Autor: | Ya San He, Jian Hua Chen, Yan Hua Deng, Jing Ping Xu, Li Jing Ling, Qian Peng, Yu Jing Nie |
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| Rok vydání: | 2018 |
| Předmět: |
Detection limit
Thermogravimetric analysis Materials science Graphene General Chemical Engineering General Engineering Infrared spectroscopy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Analytical Chemistry Electrochemical gas sensor law.invention law Hydrothermal synthesis Differential pulse voltammetry Cyclic voltammetry 0210 nano-technology Nuclear chemistry |
| Zdroj: | Analytical Methods. 10:2722-2730 |
| ISSN: | 1759-9679 1759-9660 |
| DOI: | 10.1039/c8ay00052b |
| Popis: | In this study, amine-functionalized metal–organic framework/reduced graphene oxide (NH2-MIL-125/RGO) was prepared by a one-pot hydrothermal reaction and then coated on the surface of a glassy carbon electrode (GCE). Transmission electron microscopy, Raman spectroscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, and thermogravimetric analysis were carried out to characterize NH2-MIL-125/RGO. In addition, the electrochemical detection of BPA in a phosphate solution was performed by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and AC impedance spectroscopy (EIS). Experimental results showed that NH2-MIL-125 was successfully hybridized with GO, and NH2-MIL-125/RGO was well modified on the GCE. NH2-MIL-125/RGO/GCE displayed a high sensitivity and outstanding stability for the detection of BPA because of the synergistic effects of large surface area of GO and high porosity of NH2-MIL-125. Under the optimum conditions, the current of the oxidation peak of BPA was linear with the concentration of BPA from 2.00 to 200.00 μM, and limit of detection (S/N = 3) was calculated to be 0.7966 μM. The result indicated that an electrochemical sensor with favorable, highly sensitive, and good conductive performance was successfully prepared for the detection of BPA. |
| Databáze: | OpenAIRE |
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