کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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184638 | 459579 | 2015 | 6 صفحه PDF | دانلود رایگان |
It is the first time that a rapid, facile, highly sensitive and selective electrochemical sensor based on graphene nanosheets/gold nanoparticles/nafion nanocomposite modified electrode (GRP/AuNPs/NFN) was developed for the electro-oxidation and quantification of silodosin (SLD). The chemical formation of GRP/AuNPs nanocomposite was verified by x-ray diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and transmission electron spectroscopy (TEM). The electrochemical oxidation of SLD has been investigated at GRP/AuNPs/NFN by the use of adsorptive stripping differential pulse voltammetry (AdSDPV). The developed electrode exhibited excellent electrochemical activity towards the electrochemical oxidation of SLD. Under optimal conditions, GRP/AuNPs/NFN demonstrated a wide linearity ranging from 10–330 nM with a detection limit of 3.8 nM (S/N = 3). Therefore, the electrode developed can conveniently be used for the electroanalytical determination of SLD in pharmaceutical or biological samples.
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Journal: Electrochimica Acta - Volume 157, 1 March 2015, Pages 252–257