TY - JOUR

T1 - Simultaneous electrochemical detection of hydroquinone and catechol using flexible laser-induced metal-polymer composite electrodes

AU - Kaneva, Maria

AU - Levshakova, Aleksandra

AU - Tumkin, Ilya

AU - Fatkullin, Maxim

AU - Gurevich, Evgeny

AU - Manshina, Alina

AU - Rodriguez, Raul D.

AU - Khairullina, Evgeniia

PY - 2024/9/1

Y1 - 2024/9/1

N2 - The conversion of waste polymers into functional materials presents a promising approach for PET upcycling. In this study, we exploit PET transformed into a Laser-Induced Graphene/Al NPs/PET nanocomposite (LIMPc − Laser-Induced Metal-Polymer composite) modified with electrodeposited gold nanoparticles (AuNPs). The morphology and structure of the material were investigated by scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), and X-ray photoelectron spectroscopy (XPS). The nanocomposite was employed as a flexible electrochemical sensor for the simultaneous electrochemical detection of hydroquinone (HQ) and catechol (CT). The LIMPc-plasma-NaOH-Au composite displayed well-defined oxidation peaks for HQ and CT during electrochemical analysis, with limits of detection (LOD) as low as 47 nM for CT and 56 nM for HQ, within a linear range of 0.1–300 μM for both compounds. The long-term stability of LIMPc-plasma-NaOH-Au and its performance in real sample analysis demonstrate its potential for environmental monitoring applications.

AB - The conversion of waste polymers into functional materials presents a promising approach for PET upcycling. In this study, we exploit PET transformed into a Laser-Induced Graphene/Al NPs/PET nanocomposite (LIMPc − Laser-Induced Metal-Polymer composite) modified with electrodeposited gold nanoparticles (AuNPs). The morphology and structure of the material were investigated by scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), and X-ray photoelectron spectroscopy (XPS). The nanocomposite was employed as a flexible electrochemical sensor for the simultaneous electrochemical detection of hydroquinone (HQ) and catechol (CT). The LIMPc-plasma-NaOH-Au composite displayed well-defined oxidation peaks for HQ and CT during electrochemical analysis, with limits of detection (LOD) as low as 47 nM for CT and 56 nM for HQ, within a linear range of 0.1–300 μM for both compounds. The long-term stability of LIMPc-plasma-NaOH-Au and its performance in real sample analysis demonstrate its potential for environmental monitoring applications.

KW - Catechol

KW - Flexible sensor

KW - Hydroquinone

KW - Laser fabrication

KW - Laser-induced graphene

KW - Water pollution

UR - https://www.mendeley.com/catalogue/c51fb676-be11-3153-8f26-c36cdc4da97f/

U2 - 10.1016/j.microc.2024.111106

DO - 10.1016/j.microc.2024.111106

M3 - Article

VL - 204

JO - Microchemical Journal

JF - Microchemical Journal

SN - 0026-265X

M1 - 111106

ER -