Novel Electrochemical Sensor for the Determination of Bisphenol A Using a Molybdenum(IV) Sulfide Quantum Dots Polysodium Styrene Sulfonate Functionalized Reduced Graphene Oxide Modified Glassy Carbon Electrode (GCE) by Differential Pulse Voltammetry (DPV)

Abstract

A sensitive electrochemical platform for the determination of bisphenol A (BPA) was constructed. A hybrid of MoS₂ quantum dots decorated poly sodium styrene sulfonate functionalized reduced graphene oxide (MoS₂ QD_S@PSS-rGO) was prepared by a simple method. The hybrid was cast on a bare glassy carbon electrode (GCE) to form the MoS₂ QDs@PSS-rGO/GCE. The electrochemical response of BPA on the MoS₂ QDs@PSS-rGO/GCE was significantly enhanced compared to the unmodified electrode, indicating that the nanocomposite possessed an electrocatalytic effect. A novel method was established to determine BPA with a detection limit of 0.008 μM. The applicability of the prepared sensor was demonstrated to determine BPA in real samples with high recoveries.

Keywords:

• Differential pulse voltammetry (DPV)
• glassy carbon electrode (GCE)
• Molybdenum(IV) sulfide quantum dots (QDs)
• polysodium styrene sulfonate functionalized reduced graphene oxide

Disclosure statement

The authors report there are no competing interests to declare.

Data availability statement

The authors confirm that the data supporting the findings of this study are available within the article and the supplementary material.