Reduced Graphene Oxide/Carbon Nanotube/Gold Nanoparticles Nanocomposite Functionalized Screen‐Printed Electrode for Sensitive Electrochemical Detection of Endocrine Disruptor Bisphenol A

Abstract

We fabricated a highly sensitive electrochemical sensor for the determination of bisphenol A (BPA) in aqueous solution by using reduced graphene oxide (RGO), carbon nanotubes (CNT), and gold nanoparticles (AuNPs)‐modified screen‐printed electrode (SPE). GO/CNT nanocomposite was directly reduced to RGO/CNT on SPE at room temperature. AuNPs were then electrochemically deposited in situ on RGO/CNT‐modified SPE. Under optimized conditions, differential pulse voltammetry (DPV) produced linear current responses for BPA concentrations of 1.45 to 20 and 20 to 1,490 nM, with a calculated detection limit of an ultralow 800 pM. The sensor response was unaffected by the presence of interferents such as phenol, p‐nitrophenol, pyrocatechol, 2,4‐dinitrophenol, and hydroquinone.

Electrode Modified with the Ionic Liquid [P6,6,6,14+]2[MnCl42-] for the Determination of Bisphenol A in Plastic Samples

“…This has also been observed in other studies reported in the literature. 18,46,47 Thus, it is necessary to remove the contaminated surface after each measurement. In this regard, electrodes based on carbon paste have an important advantage over film electrodes because a new surface is created simply by removing some of the paste, while the electrode film needs to be discarded after each measurement.…”

Flexible gold nanoparticles/rGO and thin film/rGO papers: novel electrocatalysts for hydrogen evolution reaction

“…Gold (Au)‐coated surfaces have an increasing interest in applications such as fuel cells, electrochemical sensing, electrochemical energy storage and catalysis . Gold nanoparticles (NPs) and Au thin films (TFs) are excellent candidates for HER electrocatalysts because they possess high catalytic activity .…”

“…[20][21][22][23] Gold (Au)-coated surfaces have an increasing interest in applications such as fuel cells, electrochemical sensing, electrochemical energy storage and catalysis. 24,25 Gold nanoparticles (NPs) and Au thin films (TFs) are excellent candidates for HER electrocatalysts because they possess high catalytic activity. 26,27 The coating of the Au nanostructures on the electrode increases the surface area and hence the adsorption capacity of the electrode.…”

Gold nanoparticle-based sensing platform of hydrazine, sulfite, and nitrite for food safety and environmental monitoring

“…The metal and semiconductor nanoparticles has gained enormous interest on the electrochemical interfaces to develop the electrochemical nanoscale systems for various catalytic and sensor applications (Alammari et al 2015;Keeley et al 2016;Wang et al 2016;Wang et al 2015). The metal nanoparticles play a key role in catalytic and electrocatalytic reactions which may empower numerous functionalities to line up for the targeted applications because of the interactivity of essential nanostructured sensor elements with their immediate local environments (Chen and Chatterjee 2013;Govindhan et al 2014, Huber et al 2015Maduraiveeran and Ramaraj 2009).…”

“…The metal nanoparticles play a key role in catalytic and electrocatalytic reactions which may empower numerous functionalities to line up for the targeted applications because of the interactivity of essential nanostructured sensor elements with their immediate local environments (Chen and Chatterjee 2013;Govindhan et al 2014, Huber et al 2015Maduraiveeran and Ramaraj 2009). Especially, gold nanoparticles (Au NPs) have found use in areas ranging from chemical separations and sensing to direct applications in the medical, food, and environmental community due to their unique chemical, optical, and electronic properties (Huber and Leopold 2016;Moghimi et al 2015;Wang et al 2015;Zhang et al 2017).…”