Preparation and characterization of unique zirconia crystals within pores via a sol–gel-hydrothermal method

Unique ZrO 2 crystals within pores were prepared by a sol–gel-hydrothermal method and characterized by XRD, TG/DTA, TEM, SEM, and N 2 adsorption–desorption isotherms. Results show that the dried sol–gel was converted into monoclinic zirconia crystals after calcined above 550 °C. The crystal sizes of...

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Bibliographic Details
Published in:Advanced powder technology : the international journal of the Society of Powder Technology, Japan Japan, 2009-07, Vol.20 (4), p.371-374
Main Authors: Chang, Qibing, Zhou, Jian-Er, Wang, Yongqing, Meng, Guangyao
Format: Article
Language:English
Subjects:
Ceramics
Crystallization
Electron microscopy
X-ray spectroscopy
Zirconia
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Summary:Unique ZrO 2 crystals within pores were prepared by a sol–gel-hydrothermal method and characterized by XRD, TG/DTA, TEM, SEM, and N 2 adsorption–desorption isotherms. Results show that the dried sol–gel was converted into monoclinic zirconia crystals after calcined above 550 °C. The crystal sizes of the zirconia single crystal were in the range of 20–70 nm. A number of irregular pores were embedded within the zirconia crystals. This unique structure was obtained due to the combination of sol–gel and hydrothermal treatments.
ISSN:0921-8831
1568-5527
DOI:10.1016/j.apt.2009.06.001