Starting nanopowders of TiO2 (anatase 99.7%) and α-Fe2O3 (hematite) were mixed in the weight ratios 60:40 and 40:60. Green samples were sintered in the temperature range 750–1250 °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 °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 microstruc...ture) and decreased electric resistivity.
TY - JOUR
AU - Đurić, Zorka Ž.
AU - Aleksić, Obrad S.
AU - Nikolić, Maria Vesna
AU - Labus, Nebojša
AU - Radovanović, Milan
AU - Luković, Miloljub D.
PY - 2014
UR - https://dais.sanu.ac.rs/123456789/540
AB - Starting nanopowders of TiO2 (anatase 99.7%) and α-Fe2O3 (hematite) were mixed in the weight ratios 60:40 and 40:60. Green samples were sintered in the temperature range 750–1250 °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 °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
T2 - Ceramics International
T1 - Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures
SP - 15131
EP - 15141
VL - 40
IS - 9 Part B
DO - 10.1016/j.ceramint.2014.06.126
UR - https://hdl.handle.net/21.15107/rcub_dais_540
ER -
@article{
author = "Đurić, Zorka Ž. and Aleksić, Obrad S. and Nikolić, Maria Vesna and Labus, Nebojša and Radovanović, Milan and Luković, Miloljub D.",
year = "2014",
abstract = "Starting nanopowders of TiO2 (anatase 99.7%) and α-Fe2O3 (hematite) were mixed in the weight ratios 60:40 and 40:60. Green samples were sintered in the temperature range 750–1250 °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 °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",
journal = "Ceramics International",
title = "Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures",
pages = "15131-15141",
volume = "40",
number = "9 Part B",
doi = "10.1016/j.ceramint.2014.06.126",
url = "https://hdl.handle.net/21.15107/rcub_dais_540"
}
Đurić, Z. Ž., Aleksić, O. S., Nikolić, M. V., Labus, N., Radovanović, M.,& Luković, M. D.. (2014). Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures. in Ceramics International
Elsevier., 40(9 Part B), 15131-15141.
https://doi.org/10.1016/j.ceramint.2014.06.126
https://hdl.handle.net/21.15107/rcub_dais_540
Đurić ZŽ, Aleksić OS, Nikolić MV, Labus N, Radovanović M, Luković MD. Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures. in Ceramics International. 2014;40(9 Part B):15131-15141.
doi:10.1016/j.ceramint.2014.06.126
https://hdl.handle.net/21.15107/rcub_dais_540 .
Đurić, Zorka Ž., Aleksić, Obrad S., Nikolić, Maria Vesna, Labus, Nebojša, Radovanović, Milan, Luković, Miloljub D., "Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures" in Ceramics International, 40, no. 9 Part B (2014):15131-15141,
https://doi.org/10.1016/j.ceramint.2014.06.126 .,
https://hdl.handle.net/21.15107/rcub_dais_540 .
