The influence of chemical and thermal treatment on the point of zero charge of hydrous zirconium oxide
Апстракт
Two zirconia samples were prepared by precipitation from aqueous zirconium oxychloride and zirconyl sulfate solutions with potassium hydroxide. The prepared zirconia samples were amorphous. The pH(pzc) values of the zirconia samples, determined in NaCl and NaNO3 solutions, were 6.6 +/- 0.1 and 6.9 +/- 0.1, respectively. After prolonged hydration of zirconia in doubly distilled water, the pH(pzc) decreased to 4.7 +/- 0.3. Crystallization into tetragonal (metastable) + monoclinic zirconia appeared at 691 K. Above 873 K, the tetragonal metastable phase changes to a monoclinic phase. It was shown that crystallite sizes of zirconia treated at 673-1273 K increased from 9.5 to 40.5 nm, respectively. The increase in temperature from 385 to 1070 K increased the pH(pzc) of zirconia samples from 6.6 to 9.0, respectively.
Кључне речи:
zirconium oxide / point of zero charge / thermal analysis / surface propertiesИзвор:
Journal of the Serbian Chemical Society, 2013, 78, 7, 987-995Финансирање / 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: 10.2298/JSC121010149S
ISSN: 0352-5139
WoS: 000322609800008
Scopus: 2-s2.0-84880835461
Колекције
Институција/група
VinčaTY - JOUR AU - Stanković, Jovan B. AU - Milonjić, Slobodan K. AU - Zec, Slavica PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5615 AB - Two zirconia samples were prepared by precipitation from aqueous zirconium oxychloride and zirconyl sulfate solutions with potassium hydroxide. The prepared zirconia samples were amorphous. The pH(pzc) values of the zirconia samples, determined in NaCl and NaNO3 solutions, were 6.6 +/- 0.1 and 6.9 +/- 0.1, respectively. After prolonged hydration of zirconia in doubly distilled water, the pH(pzc) decreased to 4.7 +/- 0.3. Crystallization into tetragonal (metastable) + monoclinic zirconia appeared at 691 K. Above 873 K, the tetragonal metastable phase changes to a monoclinic phase. It was shown that crystallite sizes of zirconia treated at 673-1273 K increased from 9.5 to 40.5 nm, respectively. The increase in temperature from 385 to 1070 K increased the pH(pzc) of zirconia samples from 6.6 to 9.0, respectively. T2 - Journal of the Serbian Chemical Society T1 - The influence of chemical and thermal treatment on the point of zero charge of hydrous zirconium oxide VL - 78 IS - 7 SP - 987 EP - 995 DO - 10.2298/JSC121010149S ER -
@article{ author = "Stanković, Jovan B. and Milonjić, Slobodan K. and Zec, Slavica", year = "2013", abstract = "Two zirconia samples were prepared by precipitation from aqueous zirconium oxychloride and zirconyl sulfate solutions with potassium hydroxide. The prepared zirconia samples were amorphous. The pH(pzc) values of the zirconia samples, determined in NaCl and NaNO3 solutions, were 6.6 +/- 0.1 and 6.9 +/- 0.1, respectively. After prolonged hydration of zirconia in doubly distilled water, the pH(pzc) decreased to 4.7 +/- 0.3. Crystallization into tetragonal (metastable) + monoclinic zirconia appeared at 691 K. Above 873 K, the tetragonal metastable phase changes to a monoclinic phase. It was shown that crystallite sizes of zirconia treated at 673-1273 K increased from 9.5 to 40.5 nm, respectively. The increase in temperature from 385 to 1070 K increased the pH(pzc) of zirconia samples from 6.6 to 9.0, respectively.", journal = "Journal of the Serbian Chemical Society", title = "The influence of chemical and thermal treatment on the point of zero charge of hydrous zirconium oxide", volume = "78", number = "7", pages = "987-995", doi = "10.2298/JSC121010149S" }
Stanković, J. B., Milonjić, S. K.,& Zec, S.. (2013). The influence of chemical and thermal treatment on the point of zero charge of hydrous zirconium oxide. in Journal of the Serbian Chemical Society, 78(7), 987-995. https://doi.org/10.2298/JSC121010149S
Stanković JB, Milonjić SK, Zec S. The influence of chemical and thermal treatment on the point of zero charge of hydrous zirconium oxide. in Journal of the Serbian Chemical Society. 2013;78(7):987-995. doi:10.2298/JSC121010149S .
Stanković, Jovan B., Milonjić, Slobodan K., Zec, Slavica, "The influence of chemical and thermal treatment on the point of zero charge of hydrous zirconium oxide" in Journal of the Serbian Chemical Society, 78, no. 7 (2013):987-995, https://doi.org/10.2298/JSC121010149S . .