Influence Of Pore Former And Transition Metal On Development Of Nanophases In Porous Silicon Oxycarbide (sico) Ceramics Obtained By Catalyst-assisted Pyrolysis

dc.creatorPereira
dc.creatorJL; de Oliveira
dc.creatorCS; Tarley
dc.creatorCRT; Mazali
dc.creatorIO; Segatelli
dc.creatorMG
dc.date2016
dc.date2016-12-06T18:30:47Z
dc.date2016-12-06T18:30:47Z
dc.date.accessioned2018-03-29T02:03:22Z
dc.date.available2018-03-29T02:03:22Z
dc.identifier1873-619X
dc.identifierJournal Of The European Ceramic Society. ELSEVIER SCI LTD, n. 36, n. 6, p. 1365 - 1376.
dc.identifier0955-2219
dc.identifierWOS:000370912300006
dc.identifier10.1016/j.jeurceramsoc.2016.01.013
dc.identifierhttp://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S0955221916300139
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/320124
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1310890
dc.descriptionThis study describes the simultaneous formation of graphitic carbon nanostructures in combination with nanowires and crystallites based on silicon carbide (SiC) on porous Co-modified silicon oxycarbide (SiCO) ceramics derived from polymeric precursors. Polyethylene (PE)-containing polymers with and without cobalt acetate, Co(Ac)(2), were prepared by hydrosylilation reaction between 2,4,6,8-tetramethylcyclotetrasiloxane and divinylbenzene followed by pyrolysis at 1000 and 1500 degrees C to obtain the corresponding porous ceramic materials. The presence of Co(Ac)2 promoted the formation of conducting and semiconducting phases of graphitic carbon and SiC and this tendency was intensified by the simultaneous presence of PE and Co(Ac)(2) at 1500 degrees C. The production of SiC nanowires seems to be originated from their crystallites initially formed into matrix. However, their pronounced development was dependent on reductive atmosphere mainly generated by PE degradation. The presented approach and selected starting materials showed to be desirable to obtain SiCO-based ceramics with potential for new electrical applications. (C) 2016 Elsevier Ltd. All rights reserved.
dc.description36
dc.description
dc.description1365
dc.description1376
dc.description
dc.description
dc.description
dc.languageEnglish
dc.publisherELSEVIER SCI LTD
dc.publisherOXFORD
dc.relationJournal of the European Ceramic Society
dc.rightsfechado
dc.sourceWOS
dc.subjectSico Ceramic
dc.subjectGraphitic Carbon
dc.subjectSic Nanostructures
dc.subjectPore Former
dc.titleInfluence Of Pore Former And Transition Metal On Development Of Nanophases In Porous Silicon Oxycarbide (sico) Ceramics Obtained By Catalyst-assisted Pyrolysis
dc.typeArtículos de revistas


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