The effect of hydrolysis duration on the phase composition, texture, aggregation and agglomeration of ZrO2 nanoparticles
https://doi.org/10.17586/2220-8054-2021-12-4-472-480
Аннотация
In this work, a number of ZrO2 · nH2O and ZrO2 samples were synthesized by direct precipitation and hydrolysis with different duration (36 and 61 h) followed by neutralization and thermal treatment. The prepared samples were analyzed using DT-TGA, PXRD, N2 physisorption and LD methods. The dependence of the size of crystallites and secondary particles, phase composition, texture, and particle morphology on the amount of zirconium hydrolyzed to form m-ZrO2 is shown. The possibility of regulating the phase composition of ZrO2 has been established while maintaining the specific surface area (110 – 120 m2/g), as well as creating a hierarchical system of micro-mesopores. The mechanism of the ZrO2 · nH2O formation during hydrolysis and precipitation is considered. The size of the critical nucleus is estimated (1.5 – 2 nm).
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Список литературы
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Рецензия
Для цитирования:
. Наносистемы: физика, химия, математика. 2021;12(4):472-480. https://doi.org/10.17586/2220-8054-2021-12-4-472-480
For citation:
Omarov Sh.O. The effect of hydrolysis duration on the phase composition, texture, aggregation and agglomeration of ZrO2 nanoparticles. Nanosystems: Physics, Chemistry, Mathematics. 2021;12(4):472-480. https://doi.org/10.17586/2220-8054-2021-12-4-472-480
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