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dc.creatorGrujic-Brojcin, M
dc.creatorScepanovic, MJ
dc.creatorDohcevic-Mitrovic, ZD
dc.creatorHinic, I
dc.creatorMatović, Branko
dc.creatorStanisic, G
dc.creatorPopović, Zoran V.
dc.date.accessioned2018-03-01T19:38:44Z
dc.date.available2018-03-01T19:38:44Z
dc.date.issued2005
dc.identifier.issn0022-3727 (print)
dc.identifier.issn1361-6463 (electronic)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/2896
dc.description.abstractNanosized titanium dioxide (TiO2) is synthesized by laser-induced pyrolysis using titanium isopropoxide as a liquid precursor. The specific surface area of as-produced nanopowders measured by the Brunauer-Emmett-Teller method (BET) varies from 84 to 110 m(2)g(-1). X-ray diffraction (XRD) and Raman scattering, showed that the TiO2 nanocrystals had an anatase structure. The rain size of the nanoparticles was estimated from scanning electron microscopy, XRD and BET measurements. The reflection spectra of nanocrystalline TiO2 pressed pellets has been measured in the region between 80 and 1500 cm(-1) by Fourier transform infrared spectroscopy. To interpret the experimental results, a model based on a generalized Bruggeman effective medium approximation of a dielectric function has been proposed. It is based on the polycrystalline character of TIO2 nanoparticles including island-structure and porosity of the nanopowders, along with the anatase single crystal dielectric functions. Thus, by comparing the results of calculated and experimental infrared (IR) spectra, the values of microscopic parameters of nanocrystalline powders can be deduced.en
dc.rightsrestrictedAccessen
dc.sourceJournal of Physics. D: Applied Physicsen
dc.titleInfrared study of laser synthesized anatase TiO2 nanopowdersen
dc.typearticleen
dcterms.abstractДохцевиц-Митровиц, ЗД; Хиниц, И; Станисиц, Г; Поповиц, ЗВ; Грујиц-Бројцин, М; Сцепановиц, МЈ; Матовић Бранко;
dc.citation.volume38
dc.citation.issue9
dc.citation.spage1415
dc.citation.epage1420
dc.identifier.wos000229552500015
dc.identifier.doi10.1088/0022-3727/38/9/014
dc.citation.rankM21
dc.identifier.scopus2-s2.0-24144467808


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