Electrochemical determination of quercetin based on porous aromatic frameworks supported Au nanoparticles

A. T.Ezhil Vilian, Pillaiyar Puthiaraj, Cheol Hwan Kwak, Sang Rak Choe, Yun Suk Huh, Wha Seung Ahn, Young Kyu Han

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

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 languageEnglish
Pages (from-to)181-187
Number of pages7
JournalElectrochimica Acta
Volume216
DOIs
StatePublished - 20 Oct 2016

Keywords

  • Electrochemical impedance
  • Electrochemical sensor
  • Gold nanoparticles
  • Porous aromatic frameworks
  • Quercetin

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