A Very Low Potential Electrochemical Detection Of L-cysteine Based On A Glassy Carbon Electrode Modified With Multi-walled Carbon Nanotubes/gold Nanorods.

dc.creatorSilva, Francisco de Assis dos Santos
dc.creatorda Silva, Monique Gabriella Angelo
dc.creatorLima, Phabyanno Rodrigues
dc.creatorMeneghetti, Mario Roberto
dc.creatorKubota, Lauro Tatsuo
dc.creatorGoulart, Marilia Oliveira Fonseca
dc.date2013-Dec
dc.date2015-11-27T13:31:58Z
dc.date2015-11-27T13:31:58Z
dc.date.accessioned2018-03-29T01:18:10Z
dc.date.available2018-03-29T01:18:10Z
dc.identifierBiosensors & Bioelectronics. v. 50, p. 202-9, 2013-Dec.
dc.identifier1873-4235
dc.identifier10.1016/j.bios.2013.06.036
dc.identifierhttp://www.ncbi.nlm.nih.gov/pubmed/23859920
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/200734
dc.identifier23859920
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1300967
dc.descriptionA nanohybrid platform built with multi-walled carbon nanotubes and gold nanorods, prepared via a cationic surfactant-containing seed-mediated sequential growth process, in aqueous solution, on a glassy carbon substrate has been successfully developed to be used in the electrocatalytic oxidation of L-cysteine (Cys). The nanohybrid was characterized by transmission electron microscopy, Raman spectroscopy and electrochemical measurements. Cyclic voltammetry results had shown that the modified electrode allows the oxidation of Cys at a very low anodic potential (0.00 V vs. Ag/AgCl). The kinetic constant kcat for the catalytic oxidation of Cys was evaluated by chronoamperometry and provided a value of 5.6×10(4) L mol(-1) s(-1). The sensor presents a linear response range from 5.0 up to 200.0 µmol L(-1), detection limit of 8.25 nmol L(-1) and a sensitivity of 120 nA L µmol(-1).
dc.description50
dc.description202-9
dc.languageeng
dc.relationBiosensors & Bioelectronics
dc.relationBiosens Bioelectron
dc.rightsfechado
dc.rightsCopyright © 2013 Elsevier B.V. All rights reserved.
dc.sourcePubMed
dc.subjectBiosensing Techniques
dc.subjectCarbon
dc.subjectCysteine
dc.subjectElectrochemical Techniques
dc.subjectElectrodes
dc.subjectGlass
dc.subjectGold
dc.subjectHumans
dc.subjectLimit Of Detection
dc.subjectNanotubes
dc.subjectNanotubes, Carbon
dc.subjectChemically Modified Electrodes
dc.subjectElectrocatalysis
dc.subjectGold Nanorods
dc.subjectMwcnt
dc.subjectL-cysteine
dc.titleA Very Low Potential Electrochemical Detection Of L-cysteine Based On A Glassy Carbon Electrode Modified With Multi-walled Carbon Nanotubes/gold Nanorods.
dc.typeArtículos de revistas


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