A novel voltammetric sensor based on p-aminothiophenol functionalized graphene oxide/gold nanoparticles for determining quercetin in the presence of ascorbic acid
In this study, gold nanoparticles (AuNPs) with the diameters of maximum 25nm were self-
assembled onto the surfaces of p-aminothiophenol functionalized graphene oxide (ATPGO)
sheets simply by mixing their aqueous dispersions. The prepared graphene oxide (GO),
ATPGO and AuNPs–ATPGO composites were characterized by a transmission electron
microscope (TEM), X-ray photoelectron spectroscopy (XPS), reflection–absorption infrared
spectroscopy (RAIRS), the X-ray diffraction (XRD) method and Raman spectroscopy. The …
assembled onto the surfaces of p-aminothiophenol functionalized graphene oxide (ATPGO)
sheets simply by mixing their aqueous dispersions. The prepared graphene oxide (GO),
ATPGO and AuNPs–ATPGO composites were characterized by a transmission electron
microscope (TEM), X-ray photoelectron spectroscopy (XPS), reflection–absorption infrared
spectroscopy (RAIRS), the X-ray diffraction (XRD) method and Raman spectroscopy. The …
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