|Title:||Voltammetric determination of caffeic acid using Co <inf>3</inf> O <inf>4</inf> microballs modified screen printed carbon electrode||Authors:||Lou, Bih Show
Chen, Shen Ming
Chen, Tse Wei
Tseng, Tien Wen
|Keywords:||Caffeic acid | Cobalt oxide microballs | Decent sensitivity | Sonochemical||Issue Date:||1-Jan-2018||Journal Volume:||13||Journal Issue:||2||Source:||International Journal of Electrochemical Science||Abstract:||
© 2018 The Authors. Herein, we report a novel electrochemical sensor for the determination of caffeic acid based on the cobalt oxide microballs modified screen printed electrode. The cobalt oxide microballs is synthesized through a facile sonochemical strategy. Furthermore, as-synthesized Co 3 O 4 microballs were systematically characterized by X-ray diffraction method (XRD), Fourier transformer infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). The electrocatalytic activity of Co 3 O 4 microballs modified electrode evaluated by the determination of caffeic acid using cyclic voltammetry (CV). Differential pulse voltammetry (DPV) was used to derive the analytical curve. The proposed sensor exhibited superior electrocatalytic activity towards caffeic acid determination in terms of decent sensitivity, a broad dynamic range with a lower limit of detection 48 nM. In addition, the proposed sensor offers good selectivity, good reproducibility, and decent stability. Moreover, the real sample analysis were carried out in wine samples and obtained an acceptable recovery rate.
|Appears in Collections:||政治學系|
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