Gradient-hierarchic-aligned porosity SiOC ceramics

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dc.contributor.authorVakıfahmetoğlu, Cekdar
dc.contributor.authorZeydanlı, Damla
dc.contributor.authorde Mello Innocentini, Murilo Daniel
dc.contributor.authorRibeiro, Fernanda dos Santos
dc.contributor.authorOrlandi Lasso, Paulo Renato
dc.contributor.authorSoraru, Gian Domenico
dc.date.accessioned2021-05-15T12:36:43Z
dc.date.available2021-05-15T12:36:43Z
dc.date.issued2017
dc.departmentMühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümüen_US
dc.descriptionZeydanli, Damla/0000-0002-8550-0105; Vakifahmetoglu, Cekdar/0000-0003-1222-4362; de Mello Innocentini, Murilo Daniel/0000-0002-5396-7798
dc.description.abstractThis work describes a simple technique to produce porous ceramics with aligned porosity having very high permeability and specific surface area. SiOC-based compositions were processed from blends of three types of preceramic polymer and a catalyst, followed by curing and pyrolysis. The heating applied from the bottom of molds promoted the nucleation, expansion and rising of gas bubbles, and the creation of a ceramic matrix with axially oriented channels interconnected by small round pores. The samples were analyzed by SEM, tomography, BET, water immersion porosimetry and permeation to gas flow. The resulting bodies presented levels of open porosity (69.9-83.4%), average channel diameter (0.59-1.25 mm) and permeability (0.56-3.83 x 10(-9) m(2)) comparable to those of ceramic foams and honeycomb monoliths, but with specific surface area (4.8-121.9 m(2)/g) typical adsorbents, enabling these lotus-type ceramics to be advantageously used as catalytic supports and adsorption components in several environmental control applications.en_US
dc.description.sponsorshipTUBITAK (The Scientific and Technological Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [CAYDAG-113Y533]; CNPq (Brazilian National Council for Scientific and Technological Development)Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) [303962/2015-1]en_US
dc.description.sponsorshipC.V. and D.Z. gratefully acknowledge the support of TUBITAK (The Scientific and Technological Research Council of Turkey) under the project Grant No.: CAYDAG-113Y533. M.D.M.I. and F.R.S. acknowledge the financial support of CNPq (Brazilian National Council for Scientific and Technological Development) under the project 303962/2015-1. Dr. Emanuela Callone ("Klaus Muller NMR Laboratory", University of Trento) is warmly acknowledged for the NMR spectra collection.en_US
dc.identifier.doi10.1038/srep41049
dc.identifier.issn2045-2322
dc.identifier.pmid28106140
dc.identifier.scopus2-s2.0-85010411094
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1038/srep41049
dc.identifier.urihttps://hdl.handle.net/20.500.12939/384
dc.identifier.volume7en_US
dc.identifier.wosWOS:000392403100001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorVakıfahmetoğlu, Cekdar
dc.language.isoen
dc.publisherNature Publishing Groupen_US
dc.relation.ispartofScientific Reports
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectSiOCen_US
dc.subjectCeramicsen_US
dc.subjectGradienten_US
dc.titleGradient-hierarchic-aligned porosity SiOC ceramics
dc.typeArticle

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