Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures
Samo za registrovane korisnike
2014
Autori
Vasiljević, Zorka ZAleksić, Obrad
Nikolić, Maria Vesna
Labus, Nebojša J.
Radovanović, Milan
Luković, Miloljub
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Starting nanopowders of TiO2 (anatase 99.7%) and alpha-Fe2O3 (hematite) were mixed in the weight ratios 60:40 and 40:60. Green samples were sintered in the temperature range 750-1250 degrees C in air. Structural, morphological and electrical studies were carried out using XRD, SEM and EDS analysis, Hall measurements and electrical conductivity measurements. The aim was analyzing the influence of the starting nanopowder structure on the resulting sample composition, density, grain size and electrical resistivity in view of tailoring properties for developing different applications such as anodes for photoelectrochemical cells, photocatalysts and gas sensors. Compared to pure anatase samples, the presence of hematite lowered the temperature of completion of the anatase to rutile phase transformation to 850 degrees C. Formation of pseudobrookite was also noted at this temperature. Higher sintering temperatures lead to increased sample density, changes in grain size (grain growth and inhom...ogenous microstructure) and decreased electric resistivity.
Ključne reči:
Sintering / Pseudobrookite / Grain growth / Electrical conductivity / Dielectric propertiesIzvor:
Ceramics International, 2014, 40, 9, 15131-15141Izdavač:
- Elsevier Sci Ltd, Oxford
Finansiranje / projekti:
- 0-3D nanostrukture za primenu u elektronici i obnovljivim izvorima energije: sinteza, karakterizacija i procesiranje (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45007)
DOI: 10.1016/j.ceramint.2014.06.126
ISSN: 0272-8842
WoS: 000341343300074
Scopus: 2-s2.0-84905899479
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Vasiljević, Zorka Z AU - Aleksić, Obrad AU - Nikolić, Maria Vesna AU - Labus, Nebojša J. AU - Radovanović, Milan AU - Luković, Miloljub PY - 2014 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/783 AB - Starting nanopowders of TiO2 (anatase 99.7%) and alpha-Fe2O3 (hematite) were mixed in the weight ratios 60:40 and 40:60. Green samples were sintered in the temperature range 750-1250 degrees C in air. Structural, morphological and electrical studies were carried out using XRD, SEM and EDS analysis, Hall measurements and electrical conductivity measurements. The aim was analyzing the influence of the starting nanopowder structure on the resulting sample composition, density, grain size and electrical resistivity in view of tailoring properties for developing different applications such as anodes for photoelectrochemical cells, photocatalysts and gas sensors. Compared to pure anatase samples, the presence of hematite lowered the temperature of completion of the anatase to rutile phase transformation to 850 degrees C. Formation of pseudobrookite was also noted at this temperature. Higher sintering temperatures lead to increased sample density, changes in grain size (grain growth and inhomogenous microstructure) and decreased electric resistivity. PB - Elsevier Sci Ltd, Oxford T2 - Ceramics International T1 - Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures EP - 15141 IS - 9 SP - 15131 VL - 40 DO - 10.1016/j.ceramint.2014.06.126 ER -
@article{ author = "Vasiljević, Zorka Z and Aleksić, Obrad and Nikolić, Maria Vesna and Labus, Nebojša J. and Radovanović, Milan and Luković, Miloljub", year = "2014", abstract = "Starting nanopowders of TiO2 (anatase 99.7%) and alpha-Fe2O3 (hematite) were mixed in the weight ratios 60:40 and 40:60. Green samples were sintered in the temperature range 750-1250 degrees C in air. Structural, morphological and electrical studies were carried out using XRD, SEM and EDS analysis, Hall measurements and electrical conductivity measurements. The aim was analyzing the influence of the starting nanopowder structure on the resulting sample composition, density, grain size and electrical resistivity in view of tailoring properties for developing different applications such as anodes for photoelectrochemical cells, photocatalysts and gas sensors. Compared to pure anatase samples, the presence of hematite lowered the temperature of completion of the anatase to rutile phase transformation to 850 degrees C. Formation of pseudobrookite was also noted at this temperature. Higher sintering temperatures lead to increased sample density, changes in grain size (grain growth and inhomogenous microstructure) and decreased electric resistivity.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Ceramics International", title = "Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures", pages = "15141-15131", number = "9", volume = "40", doi = "10.1016/j.ceramint.2014.06.126" }
Vasiljević, Z. Z., Aleksić, O., Nikolić, M. V., Labus, N. J., Radovanović, M.,& Luković, M.. (2014). Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures. in Ceramics International Elsevier Sci Ltd, Oxford., 40(9), 15131-15141. https://doi.org/10.1016/j.ceramint.2014.06.126
Vasiljević ZZ, Aleksić O, Nikolić MV, Labus NJ, Radovanović M, Luković M. Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures. in Ceramics International. 2014;40(9):15131-15141. doi:10.1016/j.ceramint.2014.06.126 .
Vasiljević, Zorka Z, Aleksić, Obrad, Nikolić, Maria Vesna, Labus, Nebojša J., Radovanović, Milan, Luković, Miloljub, "Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures" in Ceramics International, 40, no. 9 (2014):15131-15141, https://doi.org/10.1016/j.ceramint.2014.06.126 . .