A novel electrochemical sensor based on core-shell-structured metal-organic frameworks: The outstanding analytical performance towards chlorogenic acid
| Autor: | Yuling Chen, Wei Huang, Yang Wang, Kuijun Chen, Ting Zhang, Jianmin Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Detection limit
Chemistry 010401 analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Analytical Chemistry Electrochemical gas sensor chemistry.chemical_compound Adsorption Chlorogenic acid Chemical engineering Desorption Metal-organic framework Fourier transform infrared spectroscopy 0210 nano-technology Superparamagnetism |
| Zdroj: | Talanta. 196:85-91 |
| ISSN: | 0039-9140 |
| Popis: | In this paper, a superparamagnetic Fe3O4 core encapsulated into a metal-organic framework shell, Fe3O4@MIL-100(Fe), was successfully synthesized taking advantage of layer-to-layer method. The thickness of the shell can be controlled by self-assembly cycles between FeCl3·6H2O and 1,3,5–benzenetricarboxylic acid (H3BTC). The composites were characterized by Powder X-ray diffracrion (XRD), transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR) and N2 adsorption/desorption isotherms. Then, the synthesized material was firstly used to fabricate a novel electrochemical sensor for chlorogenic acid (CGA). Under the optimal conditions, this electrochemical sensor can detect CGA quantitatively in the range of 0.1–10.0 μmol L−1 and 10.0–460 μmol L−1. The limit of detection (LOD) can be as low as 0.05 μmol L−1. Considering there are little common interfering materials, this novel chlorogenic acid sensor was further applied in real samples to detect the content of CGA. |
| Databáze: | OpenAIRE |
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