Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method
Samo za registrovane korisnike
2004
Autori
Marinković Stanojević, ZoricaMilošević, Olivera
Nikolić, Maria Vesna
Kakazey, MG
Karpec, MV
Tomila, TV
Ristic, MM
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Freeze-drying, as a cryochemical powder processing method is applied in the synthesis of ZnO submicrometer to narrosized powders. The process involves rapid freezing of the sprayed precursor solution, drying under vacuum by sublimation of the Solvent and salt decomposition to oxide by thermal treatment. Calcination of dehydrated Zn(NO3)(2) was performed through destruction of the primary crystal structure, i.e. through accumulation of different defect complexes and based on this, the formation of a new state of the ZnO crystal lattice. An analysis of the microstructure evolution of zinc oxide particles in the temperature range from 548 to 898 K is described. The research was performed using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), electronic paramagnetic resonance (EPR) and infrared spectroscopy (IR). It was shown that the least ("primary") coherent scattering region (580 Angstrom) and the most defective state were Zn...O obtained at the lowest calcination temperature (T-c = 548 K). Increase of the calcination temperature (T-c > 548 K) favors uniting of eight closest "primary" domains into "secondary" ones. Unification is accompanied by a pronounced increase in microstrainin "secondary" domains, whose size practically does not depend on the calcination temperature in the region 573-898 K.
Ključne reči:
zinc oxide / powder / microstructure / freeze-dryingIzvor:
Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2004, 375, 620-624Izdavač:
- Elsevier Science Sa, Lausanne
DOI: 10.1016/j.msea.2003.10.113
ISSN: 0921-5093
WoS: 000223329700115
Scopus: 2-s2.0-3142772817
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Marinković Stanojević, Zorica AU - Milošević, Olivera AU - Nikolić, Maria Vesna AU - Kakazey, MG AU - Karpec, MV AU - Tomila, TV AU - Ristic, MM PY - 2004 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/96 AB - Freeze-drying, as a cryochemical powder processing method is applied in the synthesis of ZnO submicrometer to narrosized powders. The process involves rapid freezing of the sprayed precursor solution, drying under vacuum by sublimation of the Solvent and salt decomposition to oxide by thermal treatment. Calcination of dehydrated Zn(NO3)(2) was performed through destruction of the primary crystal structure, i.e. through accumulation of different defect complexes and based on this, the formation of a new state of the ZnO crystal lattice. An analysis of the microstructure evolution of zinc oxide particles in the temperature range from 548 to 898 K is described. The research was performed using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), electronic paramagnetic resonance (EPR) and infrared spectroscopy (IR). It was shown that the least ("primary") coherent scattering region (580 Angstrom) and the most defective state were ZnO obtained at the lowest calcination temperature (T-c = 548 K). Increase of the calcination temperature (T-c > 548 K) favors uniting of eight closest "primary" domains into "secondary" ones. Unification is accompanied by a pronounced increase in microstrainin "secondary" domains, whose size practically does not depend on the calcination temperature in the region 573-898 K. PB - Elsevier Science Sa, Lausanne T2 - Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing T1 - Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method EP - 624 SP - 620 VL - 375 DO - 10.1016/j.msea.2003.10.113 ER -
@article{ author = "Marinković Stanojević, Zorica and Milošević, Olivera and Nikolić, Maria Vesna and Kakazey, MG and Karpec, MV and Tomila, TV and Ristic, MM", year = "2004", abstract = "Freeze-drying, as a cryochemical powder processing method is applied in the synthesis of ZnO submicrometer to narrosized powders. The process involves rapid freezing of the sprayed precursor solution, drying under vacuum by sublimation of the Solvent and salt decomposition to oxide by thermal treatment. Calcination of dehydrated Zn(NO3)(2) was performed through destruction of the primary crystal structure, i.e. through accumulation of different defect complexes and based on this, the formation of a new state of the ZnO crystal lattice. An analysis of the microstructure evolution of zinc oxide particles in the temperature range from 548 to 898 K is described. The research was performed using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), electronic paramagnetic resonance (EPR) and infrared spectroscopy (IR). It was shown that the least ("primary") coherent scattering region (580 Angstrom) and the most defective state were ZnO obtained at the lowest calcination temperature (T-c = 548 K). Increase of the calcination temperature (T-c > 548 K) favors uniting of eight closest "primary" domains into "secondary" ones. Unification is accompanied by a pronounced increase in microstrainin "secondary" domains, whose size practically does not depend on the calcination temperature in the region 573-898 K.", publisher = "Elsevier Science Sa, Lausanne", journal = "Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing", title = "Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method", pages = "624-620", volume = "375", doi = "10.1016/j.msea.2003.10.113" }
Marinković Stanojević, Z., Milošević, O., Nikolić, M. V., Kakazey, M., Karpec, M., Tomila, T.,& Ristic, M.. (2004). Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method. in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing Elsevier Science Sa, Lausanne., 375, 620-624. https://doi.org/10.1016/j.msea.2003.10.113
Marinković Stanojević Z, Milošević O, Nikolić MV, Kakazey M, Karpec M, Tomila T, Ristic M. Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method. in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing. 2004;375:620-624. doi:10.1016/j.msea.2003.10.113 .
Marinković Stanojević, Zorica, Milošević, Olivera, Nikolić, Maria Vesna, Kakazey, MG, Karpec, MV, Tomila, TV, Ristic, MM, "Evolution of the microstructure of disperse ZnO powders obtained by the freeze-drying method" in Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 375 (2004):620-624, https://doi.org/10.1016/j.msea.2003.10.113 . .