Abstract
Gold nanoparticles (Au NPs) were decorated on porous aromatic framework (Au-PAF-6) using a simple reduction method. The prepared Au-PAF-6 material was characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and transmission electron microscopy (TEM), which clearly illustrated that Au NPs were dispersed with an average particle size of 15.1 nm on the PAF-6 surface. The obtained Au-PAF-6 offered a remarkable analytical performance in the electrocatalytic oxidation of quercetin (QC) at reduced potential. The modified Au-PAF-6 electrode exhibited a good differential pulse voltammetric response in the QC concentration of 1 × 10−12 − 6 × 10−10 M with the detection limit of 2 × 10−13 M. The designed sensor platform was also implemented directly to determine the QC in apple juice and green tea samples. Reliable recovery (98.2–99.4%) showed that Au-PAF-6 was highly stable and reproducible, and had good anti-interference properties.
Original language | English |
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Pages (from-to) | 181-187 |
Number of pages | 7 |
Journal | Electrochimica Acta |
Volume | 216 |
DOIs | |
State | Published - 20 Oct 2016 |
Keywords
- Electrochemical impedance
- Electrochemical sensor
- Gold nanoparticles
- Porous aromatic frameworks
- Quercetin