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dc.creatorDugandžić, Ivan
dc.creatorJovanović, Dragana J.
dc.creatorMančić, Lidija
dc.creatorMilošević, Olivera
dc.creatorAhrenkiel, Scott P.
dc.creatorŠaponjić, Zoran
dc.creatorNedeljković, Jovan
dc.date.accessioned2017-06-10T15:45:07Z
dc.date.issued2013
dc.identifier.issn0254-0584
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/344
dc.description.abstractSpherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 °C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 Å TiO2 nanoparticles with dopamine. Detailed structural and morphological characterization of colored submicronic TiO2 spheres was performed by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), laser particle size analysis and FTIR techniques. Also, optical characterization of both dopamine-modified TiO2 precursor nanoparticles and submicronic TiO2 powder particles was performed using absorption and diffuse reflectance spectroscopy, respectively. A significant decrease of the effective band gap (1.9 eV) in dopamine-modified TiO2 nanoparticles compared to the band gap of bulk material (3.2 eV) was preserved after formation of submicronic TiO2 powder particles in the process of ultrasonic spray pyrolysis under mild experimental conditions. Due to the nanostructured nature, surface-modified assemblage of TiO2 nanoparticles preserved unique ability to absorb light through charge transfer complex by photoexcitation of the ligand-to-TiO2 band, conventionally associated with extremely small TiO2 nanoparticles (d < 20 nm) whose surface Ti atoms, owing to the large curvature, have penta-coordinate geometry.en
dc.format143 1 (2013) 233-239
dc.languageen
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45020/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172056/RS//
dc.rightsrestrictedAccess
dc.sourceMaterials Chemistry and Physicsen
dc.subjectelectron microscopy (STEM, TEM and SEM)en
dc.subjectFourier transform infrared spectroscopy
dc.subjectFTIR
dc.subjectultrasonic techniques
dc.subjectTiO2
dc.titleUltrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamineen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractЈовановић, Драгана; Дуганджић, Иван; Недељковић, Јован; Шапоњић, Зоран; Милошевић, Оливера; Манчић, Лидија; Aхренкиел, Сцотт П.;
dc.citation.spage233
dc.citation.epage239
dc.citation.volume143
dc.citation.issue1
dc.identifier.wos000327684100032
dc.identifier.doi10.1016/j.matchemphys.2013.08.058
dc.identifier.scopus2-s2.0-84886722576
dc.type.versionpublishedVersion


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