Influence Of Activated Charcoal On The Structural And Morphological Characteristics Of Ceramic Based On Silicon Oxycarbide (sioc): A Promising Approach To Obtain A New Electrochemical Sensing Platform

dc.creatorGodoy
dc.creatorNV; Pereira
dc.creatorJL; Duarte
dc.creatorEH; Tarley
dc.creatorCRT; Segatelli
dc.creatorMG
dc.date2016
dc.date2016-12-06T18:30:02Z
dc.date2016-12-06T18:30:02Z
dc.date.accessioned2018-03-29T02:02:36Z
dc.date.available2018-03-29T02:02:36Z
dc.identifier1879-3312
dc.identifierMaterials Chemistry And Physics. ELSEVIER SCIENCE SA, n. 175, p. 33 - 45.
dc.identifier0254-0584
dc.identifierWOS:000374612000005
dc.identifier10.1016/j.matchemphys.2016.02.031
dc.identifierhttp://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S0254058416301018
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/319936
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1310702
dc.descriptionThis study deals with the preparation of ceramic materials based on silicon oxycarbide (SiOC), by pyrolysis of polymeric precursors consisting of poly(methylsiloxane) (PMS) and divinylbenzene (DVB), with or without activated charcoal (AC) as additional carbon source. The precursors were obtained by hydrosilylation reaction catalyzed by Pt(0)-complex at 80:20 and 20:80 (PMS:DVB) molar ratios, containing or not 3 wt.% AC. SiOC-based materials were obtained by pyrolysis at 1000 and 1500 degrees C, under argon atmosphere, and characterized by FT-IR, Raman, Si-29 MAS NMR, XRD, elemental analysis, SEM and HRTEM techniques. The presence of AC in PMS-rich ceramic produced carbon long nanowires, and possibly SiC nanowires. The increase of the temperature induced the phase segregation, with the predominance of SiO2 and/or SiC phases, besides having influence on the crystallization of beta-sic and organization of segregated carbon phase (C-free), with the formation of multiwall carbon nanotubes (MWCNT). The ceramics containing AC were tested as a new electrochemical sensing platform for the detection of acetaminophen by cyclic voltammetry. Higher peak current and lower over potential for acetaminophen, as compared with glassy carbon electrode, were observed by using the ceramic obtained at 1500 degrees C containing MWCNT as electrodic material, which clearly indicates the great electrocatalytic effect of material. (C) 2016 Elsevier B.V. All rights reserved.
dc.description175
dc.description
dc.description33
dc.description45
dc.description
dc.description
dc.description
dc.languageEnglish
dc.publisherELSEVIER SCIENCE SA
dc.publisherLAUSANNE
dc.relationMaterials Chemistry and Physics
dc.rightsfechado
dc.sourceWOS
dc.subjectCeramics
dc.subjectComposite Materials
dc.subjectAnnealing
dc.subjectCrystallization
dc.subjectElectron Microscopy
dc.subjectElectrochemical Properties
dc.titleInfluence Of Activated Charcoal On The Structural And Morphological Characteristics Of Ceramic Based On Silicon Oxycarbide (sioc): A Promising Approach To Obtain A New Electrochemical Sensing Platform
dc.typeArtículos de revistas


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