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dc.contributor.authorTorres Rivero Andrade, Karina Victoria Alejandra
dc.contributor.authorTorralba Cadena, Lourdes
dc.contributor.authorEspriu Gascon, Alexandra
dc.contributor.authorCasas Pons, Ignasi
dc.contributor.authorBastos Arrieta, Julio Alonso
dc.contributor.authorFlorido Pérez, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.date.accessioned2019-10-10T16:06:02Z
dc.date.available2019-10-10T16:06:02Z
dc.date.issued2019-09-30
dc.identifier.citationTorres Rivero, K. [et al.]. Strategies for surface modification with Ag-shaped nanoparticles: electrocatalytic enhancement of screen-printed electrodes for the detection of heavy metals. "Sensors", 30 Setembre 2019, vol. 19, núm. 4249, p. 1-14.
dc.identifier.issn1424-8220
dc.identifier.urihttp://hdl.handle.net/2117/169729
dc.description.abstractScreen-printed carbon nanofiber electrodes (SPCNFEs) represent an alternative with great acceptance due to their results, as well as their low impact on the environment. In order to improve their performance, in the present work they were modified with silver nanoparticles (Ag-NPs) and electrochemically characterized by using anodic stripping voltammetry. From the Ag-NP synthesis, silver seeds (Ag-NS) and silver nanoprisms (Ag-NPr) were obtained. The Ag-NP formation was confirmed by micrographs, where Ag-NPs with diameters of 12.20 ± 0.04 nm for Ag-NS and 20.40 ± 0.09 nm for Ag-NPr were observed. The electrodes were modified by using three different deposition methods—drop-casting, spin-coating, and in situ approaches—that offer different nanoparticle distribution and electrode modification times. It was observed that the last methodology showed a low amount of Ag-NS deposited on the electrode surface and deep alteration of this surface. Those facts suggest that the in situ synthesis methodology was not appropriate for the determination of heavy metals, and it was discarded. The incorporation of the nanoparticles by spin-coating and drop-casting strategies showed different spatial distribution on the electrode surface, as proved by scanning electron microscopy. The electrodes modified by these strategies were evaluated for the cadmium(II) and lead(II) detection using differential pulse anodic stripping voltammetry, obtaining detection limit values of 2.1 and 2.8 µg·L-1, respectively. The overall results showed that the incorporation route does not directly change the electrocatalytic effect of the nanoparticles, but the shape of these nanoparticles (spherical for seeds and triangular for prisms) has preferential electrocatalytic enhancement over Cd(II) or Pb(II)
dc.format.extent14 p.
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshNanoparticles
dc.subject.lcshElectrochemistry
dc.subject.otherScreen-printed electrodes
dc.subject.otherAg nanoparticles
dc.subject.otherDrop-casting
dc.subject.otherSpin-coating
dc.subject.otherNanoprisms
dc.subject.otherHeavy metals
dc.subject.otherDifferential pulse anodic stripping voltammetric
dc.subject.otherElectrocatalysis
dc.titleStrategies for surface modification with Ag-shaped nanoparticles: electrocatalytic enhancement of screen-printed electrodes for the detection of heavy metals
dc.typeArticle
dc.subject.lemacNanopartícules
dc.subject.lemacFibres de carboni -- Proves
dc.subject.lemacElectroquímica
dc.contributor.groupUniversitat Politècnica de Catalunya. R2EM - Resource Recovery and Environmental Management
dc.identifier.doi10.3390/s19194249
dc.relation.publisherversionhttps://www.mdpi.com/1424-8220/19/19/4249/htm
dc.rights.accessOpen Access
local.identifier.drac25852017
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO//CTM2015-68859-C2-2-R/ES/SINTESIS VERDE DE NANOPARTICULAS METALICAS A PARTIR DE AGUAS ACIDAS DE MINA Y EXTRACTOS DE RESIDUOS AGROALIMENTARIOS/
dc.relation.projectidinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ENE2017-83048-R/ES/ESTUDIOS DE CORROSION Y DISOLUCION DE ANALOGOS QUIMICOS DEL COMBUSTIBLE NUCLEAR GASTADO EN LAS CONDICIONES ESPERADAS DURANTE SU ALMACENAMIENTO/
local.citation.authorTorres Rivero, K.; Torralba, L.; Espriu-Gascon, A.; Casas, I.; Bastos-Arrieta, J.; Florido, A.
local.citation.publicationNameSensors
local.citation.volume19
local.citation.number4249
local.citation.startingPage1
local.citation.endingPage14


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