Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)

Monitoring water quality has become a goal to prevent issues related to human health and environmental conditions. In this sense, the concentration of metal ions in water sources is screened, as these are considered persistent contaminants. In this work, we describe the implementation of customized...

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Autores: López Fernández, Laia|||0000-0003-0033-8231, Bastos Arrieta, Julio|||0000-0002-8939-6253, Palet, Cristina|||0000-0002-7467-613X, Baeza, Mireia|||0000-0002-2240-6410
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:257993
Acceso en línea:https://ddd.uab.cat/record/257993
https://dx.doi.org/urn:doi:10.3390/chemosensors10040148
Access Level:acceso abierto
Palabra clave:Hg nanoparticles
Electrode surface modification
Nanocomposite graphite electrode
Square-wave anodic stripping voltammetry
Cyclic voltammetry
Simultaneous metal detection
Environmental analysis
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spelling Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)López Fernández, Laia|||0000-0003-0033-8231Bastos Arrieta, Julio|||0000-0002-8939-6253Palet, Cristina|||0000-0002-7467-613XBaeza, Mireia|||0000-0002-2240-6410Hg nanoparticlesElectrode surface modificationNanocomposite graphite electrodeSquare-wave anodic stripping voltammetryCyclic voltammetrySimultaneous metal detectionEnvironmental analysisMonitoring water quality has become a goal to prevent issues related to human health and environmental conditions. In this sense, the concentration of metal ions in water sources is screened, as these are considered persistent contaminants. In this work, we describe the implementation of customized graphite electrodes decorated with two types of Hg nanoparticles (Hg-NPs), optimized toward the electrochemical detection of Cd, Pb and Cu. Here, we combine Hg, a well-known property to form alloys with other metals, with the nanoscale features of Hg-NPs, resulting in improved electrochemical sensors towards these analytes with a substantial reduction in the used Hg amount. Hg-NPs were synthesized using poly(diallyldimethylammonium) chloride (PDDA) in a combined role as a reducing and stabilizing agent, and then appropriately characterized by means of Transmission Electron Microscopy (TEM) and Zeta Potential. The surface of composite electrodes with optimized graphite content was modified by the drop-casting of the prepared Hg-NPs. The obtained nanocomposite electrodes were morphologically characterized by Scanning Electron Microscopy (SEM), and electrochemically by Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). The results show that the Hg-NP-modified electrodes present better responses towards Cd(II), Pb(II) and Cu(II) detection in comparison with the bare graphite electrode. Analytical performance of sensors was evaluated by square-wave anodic stripping voltammetry (SWASV), obtaining a linear range of 0.005-0.5 mg·L-1 for Cd2+, of 0.028-0.37 mg·L-1 for Pb2+ and of 0.057-1.1 mg·L-1 for Cu2+. Real samples were analyzed using SWASV, showing good agreement with the recovery values of inductively coupled plasma-mass spectrometry (ICP-MS) measurements. 22022-01-0120222022-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/257993https://dx.doi.org/urn:doi:10.3390/chemosensors10040148reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 RTI2018-099362-B-C21open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2579932026-06-06T12:50:31Z
dc.title.none.fl_str_mv Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)
title Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)
spellingShingle Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)
López Fernández, Laia|||0000-0003-0033-8231
Hg nanoparticles
Electrode surface modification
Nanocomposite graphite electrode
Square-wave anodic stripping voltammetry
Cyclic voltammetry
Simultaneous metal detection
Environmental analysis
title_short Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)
title_full Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)
title_fullStr Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)
title_full_unstemmed Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)
title_sort Composite Electrodes Based on Carbon Materials Decorated with Hg Nanoparticles for the Simultaneous Detection of Cd(II), Pb(II) and Cu(II)
dc.creator.none.fl_str_mv López Fernández, Laia|||0000-0003-0033-8231
Bastos Arrieta, Julio|||0000-0002-8939-6253
Palet, Cristina|||0000-0002-7467-613X
Baeza, Mireia|||0000-0002-2240-6410
author López Fernández, Laia|||0000-0003-0033-8231
author_facet López Fernández, Laia|||0000-0003-0033-8231
Bastos Arrieta, Julio|||0000-0002-8939-6253
Palet, Cristina|||0000-0002-7467-613X
Baeza, Mireia|||0000-0002-2240-6410
author_role author
author2 Bastos Arrieta, Julio|||0000-0002-8939-6253
Palet, Cristina|||0000-0002-7467-613X
Baeza, Mireia|||0000-0002-2240-6410
author2_role author
author
author
dc.subject.none.fl_str_mv Hg nanoparticles
Electrode surface modification
Nanocomposite graphite electrode
Square-wave anodic stripping voltammetry
Cyclic voltammetry
Simultaneous metal detection
Environmental analysis
topic Hg nanoparticles
Electrode surface modification
Nanocomposite graphite electrode
Square-wave anodic stripping voltammetry
Cyclic voltammetry
Simultaneous metal detection
Environmental analysis
description Monitoring water quality has become a goal to prevent issues related to human health and environmental conditions. In this sense, the concentration of metal ions in water sources is screened, as these are considered persistent contaminants. In this work, we describe the implementation of customized graphite electrodes decorated with two types of Hg nanoparticles (Hg-NPs), optimized toward the electrochemical detection of Cd, Pb and Cu. Here, we combine Hg, a well-known property to form alloys with other metals, with the nanoscale features of Hg-NPs, resulting in improved electrochemical sensors towards these analytes with a substantial reduction in the used Hg amount. Hg-NPs were synthesized using poly(diallyldimethylammonium) chloride (PDDA) in a combined role as a reducing and stabilizing agent, and then appropriately characterized by means of Transmission Electron Microscopy (TEM) and Zeta Potential. The surface of composite electrodes with optimized graphite content was modified by the drop-casting of the prepared Hg-NPs. The obtained nanocomposite electrodes were morphologically characterized by Scanning Electron Microscopy (SEM), and electrochemically by Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS). The results show that the Hg-NP-modified electrodes present better responses towards Cd(II), Pb(II) and Cu(II) detection in comparison with the bare graphite electrode. Analytical performance of sensors was evaluated by square-wave anodic stripping voltammetry (SWASV), obtaining a linear range of 0.005-0.5 mg·L-1 for Cd2+, of 0.028-0.37 mg·L-1 for Pb2+ and of 0.057-1.1 mg·L-1 for Cu2+. Real samples were analyzed using SWASV, showing good agreement with the recovery values of inductively coupled plasma-mass spectrometry (ICP-MS) measurements.
publishDate 2022
dc.date.none.fl_str_mv 2
2022-01-01
2022
2022-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/257993
https://dx.doi.org/urn:doi:10.3390/chemosensors10040148
url https://ddd.uab.cat/record/257993
https://dx.doi.org/urn:doi:10.3390/chemosensors10040148
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 RTI2018-099362-B-C21
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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