Immobilization of ruthenium phthalocyanine on silica-coated multi-wall partially oriented carbon nanotubes: Electrochemical detection of fenitrothion pesticide

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dc.contributor.authorCanevari T.C.
dc.contributor.authorPrado T.M.
dc.contributor.authorCincotto F.H.
dc.contributor.authorMachado S.A.S.
dc.date.accessioned2024-03-13T00:53:36Z
dc.date.available2024-03-13T00:53:36Z
dc.date.issued2016
dc.description.abstract© 2015 Elsevier Ltd. All rights reserved.This paper reports on the determination of the pesticide fenitrothion using a glassy carbon electrode modified with silica-coated, multi-walled, partially oriented carbon nanotubes, SiO2/MWCNTs, containing ruthenium phthalocyanine (RuPc) synthesized in situ. The hybrid SiO2/MWCNTs/RuPc material was characterized by UV-vis absorption spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM) and differential pulse voltammetry. The modified electrode showed well-defined peaks in the presence of fenitrothion in acetate buffer, pH 4.5, with a sensitivity of 0.0822 μA μM-1 mm-2 and a detection limit of 0.45 ppm. Notably, the modified SiO2/MWCNTs/RuPc electrodes with did not suffer from significant influences in the presence of other organophosphorus pesticides during the determination of the fenitrothion pesticide. Moreover, this modified electrode showed excellent performance in the determination of fenitrothion in orange juice.
dc.description.firstpage41
dc.description.lastpage47
dc.description.volume76
dc.identifier.doi10.1016/j.materresbull.2015.12.007
dc.identifier.issn0025-5408
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35994
dc.relation.ispartofMaterials Research Bulletin
dc.rightsAcesso Restrito
dc.subject.otherlanguageCatalytic properties
dc.subject.otherlanguageComposites
dc.subject.otherlanguageElectrochemical measurements
dc.subject.otherlanguageNanostructures
dc.subject.otherlanguageSol-gel chemistry
dc.titleImmobilization of ruthenium phthalocyanine on silica-coated multi-wall partially oriented carbon nanotubes: Electrochemical detection of fenitrothion pesticide
dc.typeArtigo
local.scopus.citations55
local.scopus.eid2-s2.0-84950106154
local.scopus.subjectCatalytic properties
local.scopus.subjectDifferential pulse voltammetry
local.scopus.subjectELectrochemical detection
local.scopus.subjectElectrochemical measurements
local.scopus.subjectGlassy carbon electrodes
local.scopus.subjectOrganophos-phorus pesticides
local.scopus.subjectOriented carbon nanotubes
local.scopus.subjectSol-gel chemistry
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84950106154&origin=inward
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