Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5626
Full metadata record
DC FieldValueLanguage
dc.contributor.authorÇağlar Duvarcı, Özlem-
dc.contributor.authorÇiftçioğlu, Muhsin-
dc.date.accessioned2017-05-29T08:39:00Z
dc.date.available2017-05-29T08:39:00Z
dc.date.issued2012-09
dc.identifier.citationÇağlar Duvarcı, Ö. and Çiftçioğlu, M. (2012). Preparation and characterization of nanocrystalline titania powders by sonochemical synthesis .Powder Technology, 228, 231-240. doi:10.1016/j.powtec.2012.05.022en_US
dc.identifier.issn0032-5910
dc.identifier.issn0032-5910-
dc.identifier.urihttp://dx.doi.org/10.1016/j.powtec.2012.05.022
dc.identifier.urihttp://hdl.handle.net/11147/5626
dc.description.abstractNanocrystalline mesoporous titania powders were synthesized by hydrolyzing titanium isopropoxide in ethanol-water mixtures which were ultrasonically treated without using any templates or chemicals. Titanium isopropoxide-ethanol mixture was added dropwise to a water-ethanol mixture placed in an ultrasonic bath. The properties of the sonochemically synthesized powder were compared with those of the powders prepared without ultrasonic treatment along with Degussa P-25 titania powder. The phase structure, crystallite size, surface area, particle size, powder density were determined and sintering behavior was analyzed in this work. The nanotitania powder prepared during ultrasonic induced hydrolysis (TiO 2-U) was determined to be formed from a mixture of anatase and brookite phases at 25°C. The brookite phase in nanotitania powder prepared without ultrasonic treatment (TiO 2-NoU) was detected at 70°C. The anatase-rutile phase transformation was completed in the 500-700°C range for both powders. The average crystallite sizes of the powders at 25°C were determined as 10 and 5nm for TiO 2-NoU and TiO 2-U, respectively. The surface area decreased from 238 to106m 2/g for TiO 2-NoU and from 287 to 82m 2/g for TiO 2-U when the calcination temperature was increased from 200 to 500°C. The evolution of the N 2 adsorption-desorption behavior with calcination temperature and the corresponding pore size distributions/volumes was attributed to the formation of closely packed submicron aggregates during powder synthesis and calcination. The sintering behavior was concluded to be controlled by 7-10nm crystallites and the submicron aggregates. The determination of the densification behavior of titania powders prepared by different methods with various levels of dopants may prove to be very useful for a better understanding of the phase/pore structure evolution which is crucial for a significant number of applications.en_US
dc.language.isoenen_US
dc.publisherElsevier Ltd.en_US
dc.relation.ispartofPowder Technologyen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectNanocrystalline titaniaen_US
dc.subjectPrecipitationen_US
dc.subjectShrinkage curveen_US
dc.subjectSinteringen_US
dc.subjectUltrasonic treatmenten_US
dc.titlePreparation and characterization of nanocrystalline titania powders by sonochemical synthesisen_US
dc.typeArticleen_US
dc.authoridTR115874en_US
dc.authoridTR11652en_US
dc.institutionauthorÇağlar Duvarcı, Özlem-
dc.institutionauthorÇiftçioğlu, Muhsin-
dc.departmentİzmir Institute of Technology. Chemical Engineeringen_US
dc.identifier.volume228en_US
dc.identifier.startpage231en_US
dc.identifier.endpage240en_US
dc.identifier.wosWOS:000307132300029en_US
dc.identifier.scopus2-s2.0-84863429270en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1016/j.powtec.2012.05.022-
dc.relation.doi10.1016/j.powtec.2012.05.022en_US
dc.coverage.doi10.1016/j.powtec.2012.05.022en_US
dc.identifier.wosqualityQ2-
dc.identifier.scopusqualityQ1-
item.openairetypeArticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.grantfulltextopen-
crisitem.author.dept03.02. Department of Chemical Engineering-
crisitem.author.dept03.02. Department of Chemical Engineering-
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
Files in This Item:
File Description SizeFormat 
5626.pdfMakale2.42 MBAdobe PDFThumbnail
View/Open
Show simple item record



CORE Recommender

SCOPUSTM   
Citations

16
checked on Feb 17, 2024

WEB OF SCIENCETM
Citations

18
checked on Feb 26, 2024

Page view(s)

1,370
checked on Feb 26, 2024

Download(s)

180
checked on Feb 26, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.