Abstract
A new voltammetric sensor for simultaneous detection of bisphenol A and bisphenol S with high sensitivity has been constructed based on a three-component composite modified glassy carbon electrode. The three-component composite used herein is composed of AuAgPt ternary alloy nanocrystals (AuAgPt), porous β-cyclodextrin polymer (PCD) and oxide graphene (GO), abbreviated as AuAgPt-PCD-GO. The obtained composites were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and scanning transmission electron microscopy (STEM). The proposed modified electrode showed excellent electrochemical response to bisphenol A and bisphenol S simultaneously. Under optimal experiment conditions, the response linear ranges for bisphenol A and bisphenol S are from 6 nM to 4000 nM and 8 nM–8000 nM with detection limits of 2 nM and 2.67 nM (S/N = 3), respectively. Furthermore, this electroanalytical sensor could also be successfully applied to real sample analysis with satisfactory results.
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