Efficient electrochemical biosensors for ethynylestradiol based on the laccase enzyme supported on single walled carbon nanotubes decorated with nanocrystalline carbon quantum dots

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dc.contributor.authorCanevari T.C.
dc.contributor.authorCincotto F.H.
dc.contributor.authorNakamura M.
dc.contributor.authorMachado S.A.S.
dc.contributor.authorToma H.E.
dc.date.accessioned2024-03-13T00:52:14Z
dc.date.available2024-03-13T00:52:14Z
dc.date.issued2016
dc.description.abstract© The Royal Society of Chemistry 2016.A new hybrid nanomaterial based on single-walled carbon nanotubes incorporating nanocrystalline carbon quantum dots (SWCNT/C-dots) was developed and characterized by means of high resolution transmission electron microscopy, atomic force microscopy, Raman spectroscopy and electrochemical techniques. A glassy carbon electrode modified with SWCNT/C-dots exhibited an enhanced electrocatalytic response for 17α-ethynylestradiol, reflecting an increase of the active area of the hybrid material, promoted by the C-dots. However, the best activity was observed for laccase immobilized on CGE/SWCNT/C-dots, suggesting that the nanocrystalline C-dots improve the electron transport between the substrate, SWCNTs and the copper ions in the enzyme active sites. Such an association provided a very efficient bioelectrochemical sensor for the 17α-ethynylestradiol endocrine interfering agent, with a detection limit of 4.0 nmol L-1 in real samples.
dc.description.firstpage7254
dc.description.issuenumber39
dc.description.lastpage7259
dc.description.volume8
dc.identifier.doi10.1039/c6ay02178f
dc.identifier.issn1759-9679
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/35918
dc.relation.ispartofAnalytical Methods
dc.rightsAcesso Restrito
dc.titleEfficient electrochemical biosensors for ethynylestradiol based on the laccase enzyme supported on single walled carbon nanotubes decorated with nanocrystalline carbon quantum dots
dc.typeArtigo
local.scopus.citations22
local.scopus.eid2-s2.0-84991085110
local.scopus.subjectBioelectrochemical sensors
local.scopus.subjectElectrocatalytic response
local.scopus.subjectElectrochemical biosensor
local.scopus.subjectElectrochemical techniques
local.scopus.subjectEnzyme active sites
local.scopus.subjectGlassy carbon electrodes
local.scopus.subjectHybrid nanomaterials
local.scopus.subjectNanocrystalline carbon
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84991085110&origin=inward
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