Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method
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Аутори
Matović, BrankoDukić, Jelena
Babić, Biljana M.
Bučevac, Dušan
Dohčević-Mitrović, Zorana
Radović, Marko B.
Bošković, Snežana B.
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Nanometric ceria powders with fluorite-type structure were obtained by applying self-propagating room temperature method. The obtained powders were subsequently thermally treated (calcined) at different temperatures for different times. Powder properties such as specific surface area, crystallite size, particle size and lattice parameter have been studied. Roentgen diffraction analysis (XRD), BET and Raman scattering measurements were used to characterize the as-obtained (uncalcined) powder as well as powders calcined at different temperatures. It was found that the average diameter of the as-obtained crystallites is in the range of 3-5 nm whereas the specific surface area is about 70 m(2)/g. The subsequent, 15 min long, calcination of as-obtained powder at different temperatures gradually increased crystallite size up to similar to 60 nm and reduced specific surface down to 6 m(2)/g. Raman spectra of synthesized CeO2-y depicts a strong red shift of active triply degenerate F-2 (g) mod...e as well as additional peak at 600 cm(-1). The frequency of F-2 g mode increased while its line width decreased with an increase in calcination temperature. Such a behavior is considered to be the result of particle size increase and agglomeration during the calcination. After the heat treatment at 800 degrees C crystallite size reached value larger than 50 nm. Second order Raman mode, which originates from intrinsic oxygen vacancies, disappeared after calcination. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Кључне речи:
Calcination / X-ray methods / CeO2Извор:
Ceramics International, 2013, 39, 5, 5007-5012Финансирање / пројекти:
- Синтеза, процесирање и карактеризација наноструктурних материјала за примену у области енергије, механичког инжењерства, заштите животне стредине и биомедицине (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
DOI: 10.1016/j.ceramint.2012.11.098
ISSN: 0272-8842; 1873-3956
WoS: 000318577600035
Scopus: 2-s2.0-84875727079
Колекције
Институција/група
VinčaTY - JOUR AU - Matović, Branko AU - Dukić, Jelena AU - Babić, Biljana M. AU - Bučevac, Dušan AU - Dohčević-Mitrović, Zorana AU - Radović, Marko B. AU - Bošković, Snežana B. PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5497 AB - Nanometric ceria powders with fluorite-type structure were obtained by applying self-propagating room temperature method. The obtained powders were subsequently thermally treated (calcined) at different temperatures for different times. Powder properties such as specific surface area, crystallite size, particle size and lattice parameter have been studied. Roentgen diffraction analysis (XRD), BET and Raman scattering measurements were used to characterize the as-obtained (uncalcined) powder as well as powders calcined at different temperatures. It was found that the average diameter of the as-obtained crystallites is in the range of 3-5 nm whereas the specific surface area is about 70 m(2)/g. The subsequent, 15 min long, calcination of as-obtained powder at different temperatures gradually increased crystallite size up to similar to 60 nm and reduced specific surface down to 6 m(2)/g. Raman spectra of synthesized CeO2-y depicts a strong red shift of active triply degenerate F-2 (g) mode as well as additional peak at 600 cm(-1). The frequency of F-2 g mode increased while its line width decreased with an increase in calcination temperature. Such a behavior is considered to be the result of particle size increase and agglomeration during the calcination. After the heat treatment at 800 degrees C crystallite size reached value larger than 50 nm. Second order Raman mode, which originates from intrinsic oxygen vacancies, disappeared after calcination. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method VL - 39 IS - 5 SP - 5007 EP - 5012 DO - 10.1016/j.ceramint.2012.11.098 ER -
@article{ author = "Matović, Branko and Dukić, Jelena and Babić, Biljana M. and Bučevac, Dušan and Dohčević-Mitrović, Zorana and Radović, Marko B. and Bošković, Snežana B.", year = "2013", abstract = "Nanometric ceria powders with fluorite-type structure were obtained by applying self-propagating room temperature method. The obtained powders were subsequently thermally treated (calcined) at different temperatures for different times. Powder properties such as specific surface area, crystallite size, particle size and lattice parameter have been studied. Roentgen diffraction analysis (XRD), BET and Raman scattering measurements were used to characterize the as-obtained (uncalcined) powder as well as powders calcined at different temperatures. It was found that the average diameter of the as-obtained crystallites is in the range of 3-5 nm whereas the specific surface area is about 70 m(2)/g. The subsequent, 15 min long, calcination of as-obtained powder at different temperatures gradually increased crystallite size up to similar to 60 nm and reduced specific surface down to 6 m(2)/g. Raman spectra of synthesized CeO2-y depicts a strong red shift of active triply degenerate F-2 (g) mode as well as additional peak at 600 cm(-1). The frequency of F-2 g mode increased while its line width decreased with an increase in calcination temperature. Such a behavior is considered to be the result of particle size increase and agglomeration during the calcination. After the heat treatment at 800 degrees C crystallite size reached value larger than 50 nm. Second order Raman mode, which originates from intrinsic oxygen vacancies, disappeared after calcination. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method", volume = "39", number = "5", pages = "5007-5012", doi = "10.1016/j.ceramint.2012.11.098" }
Matović, B., Dukić, J., Babić, B. M., Bučevac, D., Dohčević-Mitrović, Z., Radović, M. B.,& Bošković, S. B.. (2013). Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method. in Ceramics International, 39(5), 5007-5012. https://doi.org/10.1016/j.ceramint.2012.11.098
Matović B, Dukić J, Babić BM, Bučevac D, Dohčević-Mitrović Z, Radović MB, Bošković SB. Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method. in Ceramics International. 2013;39(5):5007-5012. doi:10.1016/j.ceramint.2012.11.098 .
Matović, Branko, Dukić, Jelena, Babić, Biljana M., Bučevac, Dušan, Dohčević-Mitrović, Zorana , Radović, Marko B., Bošković, Snežana B., "Synthesis, calcination and characterization of Nanosized ceria powders by self-propagating room temperature method" in Ceramics International, 39, no. 5 (2013):5007-5012, https://doi.org/10.1016/j.ceramint.2012.11.098 . .