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.
TY - 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 . .
