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Pregled bibliografske jedinice broj: 964970

Microstructural properties of hydrothermally synthesized iron/titanium oxide nanoparticles


Marić, Ivan; Dražić, Goran; Ivanda, Mile; Jurkin, Tanja; Štefanić, Goran; Gotić, Marijan
Microstructural properties of hydrothermally synthesized iron/titanium oxide nanoparticles // Book of Abstracts of the XXXIV European Congress on Molecular Spectroscopy / Fausto, Rui ; Bras, Elisa ; Justino, Licinia ; Nogueira, Bernardo (ur.).
Coimbra, Portugal: Department of Chemistry, University of Coimbra, 2018. str. 252-252 (poster, međunarodna recenzija, sažetak, znanstveni)


CROSBI ID: 964970 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Microstructural properties of hydrothermally synthesized iron/titanium oxide nanoparticles

Autori
Marić, Ivan ; Dražić, Goran ; Ivanda, Mile ; Jurkin, Tanja ; Štefanić, Goran ; Gotić, Marijan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of the XXXIV European Congress on Molecular Spectroscopy / Fausto, Rui ; Bras, Elisa ; Justino, Licinia ; Nogueira, Bernardo - Coimbra, Portugal : Department of Chemistry, University of Coimbra, 2018, 252-252

ISBN
978-989-20-8611-8

Skup
XXXIV - European Congress on Molecular Spectroscopy - EUCMOS 2018

Mjesto i datum
Coimbra, Portugal, 19.-24.08.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Iron/titanium oxide nanoparticles ; hydrothermal synthesis ; XRD ; Mossbauer spectroscopy ; band gap

Sažetak
Iron/titanium oxide nanoparticles with initial molar ratio Fe/(Fe+Ti)  0.5 were hydrothermally synthesized at 180oC in aqueous ammonia solution (pH = 9). The titanium and iron precursors were TiCl4 and FeCl3, respectively. The amount of doped iron strongly affected structural properties as well as degree of dispersion of iron in Fe-Ti-O system. Anatase was the dominant phase in the iron/titanium oxide samples with Fe/(Fe+Ti)  0.25. The iron/titanium oxide sample with Fe/(Fe+Ti) = 0.5 contained no anatase. The average crystallite size of the anatase phase in iron/titanium oxide samples decreased with the increase of iron doping. The appearance of the small diffraction lines of hematite in the product with 10 mol% of iron indicates that the solid solubility limit of Fe3+ ions in the TiO2 lattice has been reached. However, the results of precise unit-cell parameters measurement, obtained using both Rietveld and Le Bail refinements of the powder diffraction patterns with added silicon as an internal standard, show that the unit-cell volume of anatase increase with the increase of iron content up to 15 mol%. Iron that could not be incorporated in the TiO2 lattice separated in the form of hematite (α-Fe2O3) as shown using Mössbauer spectroscopy and XRD. The diffuse reflectance spectra were used for band gap energy calculations (Fig. 1). The band gap energy of undoped TiO2 sample was 3.1 eV (Fig. 1), whereas the band gap energy of Fe-Ti-O samples doped with up to 10 % showed blue shift (3.3 eV). The significant red shift (from 3.3 to 2.4 eV) was observed for the highly iron doped TiO2 samples (from 10 to 50 % of doped iron).

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekti:
EK-EFRR-KK.01.1.1.01.0001 - Potpora vrhunskim istraživanjima Centra izvrsnosti za napredne materijale i senzore (Ivanda, Mile; Jakšić, Milko; Stipčević, Mario; Kralj, Marko, EK - KK.01.1.1.01) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Mile Ivanda (autor)

Avatar Url Goran Štefanić (autor)

Avatar Url Ivan Marić (autor)

Avatar Url Marijan Gotić (autor)

Avatar Url Tanja Jurkin (autor)

Avatar Url Goran Dražić (autor)

Poveznice na cjeloviti tekst rada:

www.qui.uc.pt

Citiraj ovu publikaciju:

Marić, Ivan; Dražić, Goran; Ivanda, Mile; Jurkin, Tanja; Štefanić, Goran; Gotić, Marijan
Microstructural properties of hydrothermally synthesized iron/titanium oxide nanoparticles // Book of Abstracts of the XXXIV European Congress on Molecular Spectroscopy / Fausto, Rui ; Bras, Elisa ; Justino, Licinia ; Nogueira, Bernardo (ur.).
Coimbra, Portugal: Department of Chemistry, University of Coimbra, 2018. str. 252-252 (poster, međunarodna recenzija, sažetak, znanstveni)
Marić, I., Dražić, G., Ivanda, M., Jurkin, T., Štefanić, G. & Gotić, M. (2018) Microstructural properties of hydrothermally synthesized iron/titanium oxide nanoparticles. U: Fausto, R., Bras, E., Justino, L. & Nogueira, B. (ur.)Book of Abstracts of the XXXIV European Congress on Molecular Spectroscopy.
@article{article, author = {Mari\'{c}, Ivan and Dra\v{z}i\'{c}, Goran and Ivanda, Mile and Jurkin, Tanja and \v{S}tefani\'{c}, Goran and Goti\'{c}, Marijan}, year = {2018}, pages = {252-252}, keywords = {Iron/titanium oxide nanoparticles, hydrothermal synthesis, XRD, Mossbauer spectroscopy, band gap}, isbn = {978-989-20-8611-8}, title = {Microstructural properties of hydrothermally synthesized iron/titanium oxide nanoparticles}, keyword = {Iron/titanium oxide nanoparticles, hydrothermal synthesis, XRD, Mossbauer spectroscopy, band gap}, publisher = {Department of Chemistry, University of Coimbra}, publisherplace = {Coimbra, Portugal} }
@article{article, author = {Mari\'{c}, Ivan and Dra\v{z}i\'{c}, Goran and Ivanda, Mile and Jurkin, Tanja and \v{S}tefani\'{c}, Goran and Goti\'{c}, Marijan}, year = {2018}, pages = {252-252}, keywords = {Iron/titanium oxide nanoparticles, hydrothermal synthesis, XRD, Mossbauer spectroscopy, band gap}, isbn = {978-989-20-8611-8}, title = {Microstructural properties of hydrothermally synthesized iron/titanium oxide nanoparticles}, keyword = {Iron/titanium oxide nanoparticles, hydrothermal synthesis, XRD, Mossbauer spectroscopy, band gap}, publisher = {Department of Chemistry, University of Coimbra}, publisherplace = {Coimbra, Portugal} }




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