The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method
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Autori
Marinović-Cincović, MilenaJanković, Bojan Ž.
Milićević, Bojana R.
Antić, Željka
Krsmanović, Radenka
Dramićanin, Miroslav
Članak u časopisu
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
The comparative kinetic analysis of the non-isothermal crystallization was performed for Eu3+ doped Zn2SiO4 samples, prepared by the polymer induced sol-gel procedure and thermally treated in the conventional furnace and in a microwave oven. This comparison is done using various thermal analysis techniques and is supported by SEM investigation. It was found that low values of Avrami constant (n), identified in the primary crystallization stage resulted from a not constant radial growth rate. One possible mechanism that could alter the linear crystal growth rate is a diffusion-controlled transition, with instantaneous nucleation mechanism. In the secondary crystallization stage, observed for both samples, it was found that the probability for two-dimensional crystal growth increases, especially at higher heating rates. It was found that the substitution of zinc ions by europium ions in Zn2SiO4 matrix can lead to some defects due to different radius and charges, which induces autocatalyt...ic behavior of the tested systems. It was shown that the two-parameter Sestak-Berggren (SB) autocatalytic model best describes the non-isothermal crystallization of doped samples. It has been shown that SB model is adequate to describe the crystallization kinetics for the fine powder samples (crystallite size of 60-65 nm). (C) 2013 Elsevier B.V. All rights reserved.
Ključne reči:
PEG-modified sol-gel method / Eu3+ doped zinc silicate / Fine powders / Secondary crystallization / Radial growth rate / Autocatalytic modelIzvor:
Powder Technology, 2013, 249, 497-512Finansiranje / projekti:
- Materijali redukovane dimenzionalnosti za efikasnu apsorpciju svetlosti i konverziju energije (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Uticaj veličine, oblika i strukture nanočestica na njihova svojstva i svojstva nanokompozita (RS-MESTD-Basic Research (BR or ON)-172056)
- Dinamika nelinearnih fizičkohemijskih i biohemijskih sistema sa modeliranjem i predviđanjem njihovih ponašanja pod neravnotežnim uslovima (RS-MESTD-Basic Research (BR or ON)-172015)
DOI: 10.1016/j.powtec.2013.09.020
ISSN: 0032-5910; 1873-328X
WoS: 000328659400066
Scopus: 2-s2.0-84885157459
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Marinović-Cincović, Milena AU - Janković, Bojan Ž. AU - Milićević, Bojana R. AU - Antić, Željka AU - Krsmanović, Radenka AU - Dramićanin, Miroslav PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5812 AB - The comparative kinetic analysis of the non-isothermal crystallization was performed for Eu3+ doped Zn2SiO4 samples, prepared by the polymer induced sol-gel procedure and thermally treated in the conventional furnace and in a microwave oven. This comparison is done using various thermal analysis techniques and is supported by SEM investigation. It was found that low values of Avrami constant (n), identified in the primary crystallization stage resulted from a not constant radial growth rate. One possible mechanism that could alter the linear crystal growth rate is a diffusion-controlled transition, with instantaneous nucleation mechanism. In the secondary crystallization stage, observed for both samples, it was found that the probability for two-dimensional crystal growth increases, especially at higher heating rates. It was found that the substitution of zinc ions by europium ions in Zn2SiO4 matrix can lead to some defects due to different radius and charges, which induces autocatalytic behavior of the tested systems. It was shown that the two-parameter Sestak-Berggren (SB) autocatalytic model best describes the non-isothermal crystallization of doped samples. It has been shown that SB model is adequate to describe the crystallization kinetics for the fine powder samples (crystallite size of 60-65 nm). (C) 2013 Elsevier B.V. All rights reserved. T2 - Powder Technology T1 - The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method VL - 249 SP - 497 EP - 512 DO - 10.1016/j.powtec.2013.09.020 ER -
@article{ author = "Marinović-Cincović, Milena and Janković, Bojan Ž. and Milićević, Bojana R. and Antić, Željka and Krsmanović, Radenka and Dramićanin, Miroslav", year = "2013", abstract = "The comparative kinetic analysis of the non-isothermal crystallization was performed for Eu3+ doped Zn2SiO4 samples, prepared by the polymer induced sol-gel procedure and thermally treated in the conventional furnace and in a microwave oven. This comparison is done using various thermal analysis techniques and is supported by SEM investigation. It was found that low values of Avrami constant (n), identified in the primary crystallization stage resulted from a not constant radial growth rate. One possible mechanism that could alter the linear crystal growth rate is a diffusion-controlled transition, with instantaneous nucleation mechanism. In the secondary crystallization stage, observed for both samples, it was found that the probability for two-dimensional crystal growth increases, especially at higher heating rates. It was found that the substitution of zinc ions by europium ions in Zn2SiO4 matrix can lead to some defects due to different radius and charges, which induces autocatalytic behavior of the tested systems. It was shown that the two-parameter Sestak-Berggren (SB) autocatalytic model best describes the non-isothermal crystallization of doped samples. It has been shown that SB model is adequate to describe the crystallization kinetics for the fine powder samples (crystallite size of 60-65 nm). (C) 2013 Elsevier B.V. All rights reserved.", journal = "Powder Technology", title = "The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method", volume = "249", pages = "497-512", doi = "10.1016/j.powtec.2013.09.020" }
Marinović-Cincović, M., Janković, B. Ž., Milićević, B. R., Antić, Ž., Krsmanović, R.,& Dramićanin, M.. (2013). The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method. in Powder Technology, 249, 497-512. https://doi.org/10.1016/j.powtec.2013.09.020
Marinović-Cincović M, Janković BŽ, Milićević BR, Antić Ž, Krsmanović R, Dramićanin M. The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method. in Powder Technology. 2013;249:497-512. doi:10.1016/j.powtec.2013.09.020 .
Marinović-Cincović, Milena, Janković, Bojan Ž., Milićević, Bojana R., Antić, Željka, Krsmanović, Radenka, Dramićanin, Miroslav, "The comparative kinetic analysis of the non-isothermal crystallization process of Eu3+ doped Zn2SiO4 powders prepared via polymer induced sol-gel method" in Powder Technology, 249 (2013):497-512, https://doi.org/10.1016/j.powtec.2013.09.020 . .