Graphitic Carbon-Coated PtCoNi Alloys Supported on N-Doped Porous Carbon Nanoflakes for Sensitive Detection of Bisphenol A

Abstract

As the raw material of polycarbonate and epoxy resins, bisphenol A (BPA) is widely employed in industrial production of commodities, such as plastic bottles and thermal paper. However, excessive amounts of BPA affect the immune system of the human body and damage the health. It is important to monitor BPA in environmental and industrial samples. Herein, a graphitic carbon-coated PtCoNi alloy supported on N-doped porous carbon nanoflakes (G-PtCoNi/N-PCFs) was successfully prepared by high-temperature pyrolysis. The characteristics (e.g., compositions and microstructure) of the G-PtCoNi/N-PCFs were characterized in detail, coupled by investigating the N-doping effect. Specifically, the well-dispersed PtCoNi alloy enhanced the catalytic activity, combined by inhibiting the poisoning effect of the species absorbed on the surface and improving the utilization of Pt with additional Co/Ni atoms. Moreover, the graphitic carbon shell further enhanced the catalytic stability of BPA. As a desirable electrode material, the G-PtCoNi/N-PCFs composite was applied for building an electrochemical sensor for the detection of BPA. Under optimal conditions, the resultant sensor exhibited outstanding catalytic activity and analytical performance with a wide linear range of 2.0−140.0 μM and a low limit of detection of 0.19 μM (S/N = 3), combined with the feasibility for detecting BPA in thermal paper and plastic bottles.

Nanomaterial-based electrochemical chemo(bio)sensors for the detection of nanoplastic residues: trends and future prospects

“…The sensor's recovery of BPA in tap and lake water varied from 96.05% to 108.70% over the course of reliability testing. 95 Zhu et al 96 introduced another electrochemical sensor designed for the detection of BPA. This sensor utilized a graphitic carbon-coated PtCoNi alloy supported on N-doped porous carbon nanoflakes (G-PtCoNi/N-PCFs), as shown in Fig.…”

Smartphone Imaging Device for Multimodal Detection of Hydrogen Sulfide Using Cu-Doped MOF Sensors

“…These methods undergo inevitable issues, such as requirements of sophisticated pretreatments, high cost, time-consuming manipulations, professional technicians, and poor analytic specificity and accuracy. To solve these issues, it is required to construct robust, fast, and efficient analytic platforms for accurate determination of H 2 S. Colorimetric analysis is fast, simple, low-cost, and on-the-spot, − while the electrochemical sensing platform is ultrasensitive and has great adaptability for H 2 S determination. , Notably, the colorimetric-based sensing platform possesses a significant color change, which can achieve the naked-eye readout for semiquantitative analysis . Despite the advanced effort in the rational design of the H 2 S sensing platform, the single signal output can still generate unstable and false results. − Integrating multiple signal analysis, which complements the merits of each sensing platform through different detection mechanisms, can obviously boost accuracy and reliability for H 2 S determination.…”

Molecularly imprinted biomimetic SPR sensor decorated with gold nanoparticles for selective and sensitive detection of bisphenol A

“…In order to overcome the difficulties associated with BPA detection, scientists and researchers have created a variety of analytical techniques over time, each having specific benefits and drawbacks. There is a wide range of BPA detection methods, covering traditional techniques such as chromatography and spectrometry [9][10][11], as well as emerging technologies such as biosensors [12][13][14][15] and molecular imprinting [16,17]. According to studies based on the use of molecularly imprinted polymers (MIPs) for the detection, which has been the subject of several papers, BPA represents a large category of EDs [18][19][20][21][22].…”