A sensitive electrochemical nanosensor based on iron oxide nanoparticles and multiwalled carbon nanotubes for simultaneous determination of benzoquinone and catechol in groundwater

Sawczuk, Raquel B. S.; Pinheiro, Helilma A.; Santos, Janaiane Ferreira dos; Alves, Ismael Carlos Braga; Viégas, Helmara Diniz Costa; Lacerda, Cristina Broglia Feitosa de; Sousa, Janyeid Karla C.; Marques, Edmar P.; Marques, Aldaléa Lopes Brandes

doi:10.1080/03067319.2021.1882446

Cited by 6 publications

(1 citation statement)

References 57 publications

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“…For example, Cotchim et al (2020) developed an electrochemical sensor based on a carboxylic acid-functionalized graphene (Gr-COOH)-modified glassy carbon electrode for the determination of HQ in pharmaceutical products (LOD of 0.1 μM) [ 53 ]. Another interesting work is that of Sawczuk and her coworkers, who developed an electrochemical nanosensor based on iron oxide nanoparticles and Multiwalled Carbon Nanotubes (MWNTs) for the simultaneous determination of benzoquinone and catechol in groundwater with a sensitivity in the micromolar range [ 54 ]. There are more, as well resumed by Guin et al (2010) in their work [ 55 ].…”

Section: Introductionmentioning

confidence: 99%

Sensitive Detection of Industrial Pollutants Using Modified Electrochemical Platforms

et al. 2022

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Water pollution is nowadays a global problem and the effective detection of pollutants is of fundamental importance. Herein, a facile, efficient, robust, and rapid (response time < 2 min) method for the determination of important quinone-based industrial pollutants such as hydroquinone and benzoquinone is reported. The recognition method is based on the use of screen-printed electrodes as sensing platforms, enhanced with carbon-based nanomaterials. The enhancement is achieved by modifying the working electrode of such platforms through highly sensitive membranes made of Single- or Multi-Walled Carbon Nanotubes (SWNTs and MWNTs) or by graphene nanoplatelets. The modified sensing platforms are first carefully morphologically and electrochemically characterized, whereupon they are tested in the detection of different pollutants (i.e., hydroquinone and benzoquinone) in water solution, by using both cyclic and square-wave voltammetry. In particular, the sensors based on film-deposited nanomaterials show good sensitivity with a limit of detection in the nanomolar range (0.04 and 0.07 μM for SWNT- and MWNT-modified SPEs, respectively) and a linear working range of 10 to 1000 ppb under optimal conditions. The results highlight the improved performance of these novel sensing platforms and the large-scale applicability of this method for other analytes (i.e., toxins, pollutants).

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Section: Introductionmentioning

confidence: 99%

Sensitive Detection of Industrial Pollutants Using Modified Electrochemical Platforms

et al. 2022

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Simultaneous determination of benzene, toluene and xylene (BTX) by Au nanoparticles (AuNP) anchored in reduced graphene oxide electrode

Carlos Braga Alves,

Ribamar Nascimento dos Santos,

Pereira Marques

et al. 2023

Electroanalysis

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This work reports the development of an electrochemical sensor for the simultaneous determination of benzene, toluene and xylene (BTX). The sensor was prepared by coating the glassy carbon electrode (GCE) with reduced graphene oxide (RGO) film, decorated with gold nanoparticles (AuNP), by electrodeposition. Surface modification with AuNP/RGO‐GCE favored the electron transfer process and increased the active area, providing greater sensitivity for the sensor. The AuNP/RGO‐GCE sensor was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and scanning electron microscope (SEM). Quantitative analyses of BTX were carried out using the differential pulse voltammetry (DPV) technique, after optimization of the parameters that influence the sensor performance. The sensor showed a linear response in the 30–240 μM concentration range, with a detection limit range of 1.8–2.2 μM, 2.2–2.7 μM, and 2.0–2.6 μM, and quantification limit range of 6.2–7.3 μM, 7.2–8.9 μM, and 6.6–8.8 μM, respectively for B, T and X. In addition to the satisfactory repeatability and stability, in the determination of BTX, the method still showed good selectivity even in the presence of molecules with similar chemical structure, such as: catechol, p‐benzoquinone, resorcinol, ethanol, pyrene and in the presence of K+, Mg2+ and Pb2+ ions. The device was successfully applied for the determination of the analytes (BTX) in water samples from fuel station separator boxes, where recovery rates close to 100 % (97.8 % to 103.1 %) were obtained. The results obtained suggest that the AuNP/RGO‐GCE sensor has strong potential for detecting BTX in wastewater discharge from industrial processes.

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Electrochemical sensor based on carbon nanotube decorated with manganese oxide nanoparticles for naphthalene determination

et al. 2023

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A sensitive electrochemical nanosensor based on iron oxide nanoparticles and multiwalled carbon nanotubes for simultaneous determination of benzoquinone and catechol in groundwater

Cited by 6 publications

References 57 publications

Sensitive Detection of Industrial Pollutants Using Modified Electrochemical Platforms

Sensitive Detection of Industrial Pollutants Using Modified Electrochemical Platforms

Simultaneous determination of benzene, toluene and xylene (BTX) by Au nanoparticles (AuNP) anchored in reduced graphene oxide electrode

Electrochemical sensor based on carbon nanotube decorated with manganese oxide nanoparticles for naphthalene determination

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