Abstract
Sunflower shell-derived porous activated carbon precursors (S-PAC) were prepared by KOH activation method. Then, ionic liquids were added to the S-PAC precursors through hydrothermal method to synthesize porous activated carbon composites functionalized with polyionic liquids (PIL@S-PAC). The successful synthesis of PIL@S-PAC was demonstrated by analyzing the structure and elemental composition of the material via transmission electron microscopy (TEM), scanning electron microscopy (SEM), x-ray diffractometry (XRD), micro-Raman spectroscopy and x-ray photoelectron spectroscopy (XPS). The electrocatalytic properties of bisphenol A (BPA) on the PIL@S-PAC glassy carbon electrode (PIL@S-PAC/GCE) was investigated by electrochemical method. The PIL@S-PAC/GCE had high electrocatalytic performance to the oxidation of BPA. The sensor displays a wide linear range (0.5–4.0, 6.0–30 μM) and a low detection limit (0.14 μM).
Published Version
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