Electrochemical sensor for isoniazid detection by using a WS2/CNTs nanocomposite

Página do item simplificado
dc.contributor.authorSantos B.G.
dc.contributor.authorGoncalves J.M.
dc.contributor.authorRocha D.P.
dc.contributor.authorHigino G.S.
dc.contributor.authorYadav T.P.
dc.contributor.authorPedrotti J.J.
dc.contributor.authorAjayan P.M.
dc.contributor.authorAngnes L.
dc.date.accessioned2024-03-12T19:13:40Z
dc.date.available2024-03-12T19:13:40Z
dc.date.issued2022
dc.description.abstract© 2022 The AuthorsThis paper presents a new modified electrode that combines the high electrical conductivity of carbon nanotubes (CNTs) with the catalytic sites of WS2 (named WS2/CNTs) for isoniazid detection. Electrochemical and electroanalytical properties of the WS2/CNTs/glassy carbon electrode (GCE)-modified electrodes were investigated by cyclic voltammetry and differential pulse voltammetry (DPV). The composite material was characterized by Raman spectroscopy, X-ray diffractometry (XRD), and scanning electron microscopy. The electrochemical performance of the WS2/CNTs/GCE sensor exhibited a limit of detection of 0.24 μM with a linear range from 10 to 80 μM of isoniazid using DPV. This sensor provided enhanced stability and electrocatalytic activity for isoniazid oxidation reactions. Recoveries ranging from 96.9 to 104.5% were calculated, demonstrating satisfactory accuracy of the proposed method. The improvement of electrochemical activity was assigned to synergic effects obtained by combining the catalytic sites from WS2 and the known electrical conductivity and large surface area of the CNTs, resulting in an anticipation of the oxidation peak of isoniazid in about 400 mV in comparison with bare GCE.
dc.description.volume4
dc.identifier.doi10.1016/j.snr.2021.100073
dc.identifier.issn2666-0539
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/34294
dc.relation.ispartofSensors and Actuators Reports
dc.rightsAcesso Aberto
dc.subject.otherlanguageCarbon nanotubes
dc.subject.otherlanguageComposites
dc.subject.otherlanguageElectrochemical sensor
dc.subject.otherlanguageIsoniazid
dc.titleElectrochemical sensor for isoniazid detection by using a WS2/CNTs nanocomposite
dc.typeArtigo
local.scopus.citations22
local.scopus.eid2-s2.0-85122558910
local.scopus.subjectCarbon nanotube nanocomposites
local.scopus.subjectCatalytic sites
local.scopus.subjectComposites material
local.scopus.subjectDifferential pulse voltammetry
local.scopus.subjectElectroanalytical properties
local.scopus.subjectElectrochemicals
local.scopus.subjectGlassy carbon electrodes
local.scopus.subjectHigh electrical conductivity
local.scopus.subjectModified electrodes
local.scopus.subjectX ray scanning
local.scopus.updated2024-12-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85122558910&origin=inward
Arquivos
Coleções
Artigos de periódico