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Crystallization of Anatase from Amorphous Titania Using the Hydrothermal Technique: Effects of Starting Material and Temperature
Abstract
The crystallization of anatase from amorphous titania has been controlled using the hydrothermal technique. Crystallite size and surface area can be controlled by careful alterations of the hydrothermal conditions. The catalytic effect of the water on crystallization has been demonstrated, and the crystallization mechanism has been shown to change from a solid-state type to dissolution precipitation as the temperature is increased. The influence of the amorphous precursor preparation route has been examined in order to evaluate the effect of contaminant ions on the crystallization process. It has been shown that the chloride ion accelerates the nucleation of the anatase, even under dry conditions. The effects of acidic and basic solutions have been studied. Acidic conditions result in the formation of anatase, brookite, and rutile, whereas basic conditions accelerate the production of anatase. The mechanisms for the hydrothermal crystallization of anatase and rutile are discussed.
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Citations
Cited by
Solution processing of transparent conductors: from flask to film
Pasquarelli, R. M., Ginley, D. S., & O'Hayre, R. (2011) · Chemical Society Reviews · doi:10.1039/c1cs15065k · Cited by 403
Joo, J., Kwon, S. G., Yu, T., Cho, M., Lee, J., Yoon, J., & Hyeon, T. (2005) · The Journal of Physical Chemistry B · doi:10.1021/jp052458z · Cited by 386
Dehydration and crystallization of amorphous calcium carbonate in solution and in air
Ihli, J., Wong, W. C., Noel, E. H., Kim, Y.-Y., Kulak, A. N., Christenson, H. K., Duer, M. J., & Meldrum, F. C. (2014) · Nature Communications · doi:10.1038/ncomms4169 · Cited by 383
Yu, J., Liu, S., & Yu, H. (2007) · Journal of Catalysis · doi:10.1016/j.jcat.2007.03.032 · Cited by 371
Metadata
- Authors
- Yanagisawa, K., & Ovenstone, J.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 1999-08-31
- Volume
- 103
- Issue
- 37
- Pages
- 7781-7787
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2018453583
- Cited by
- 502
- References
- 0
- FWCI
- 7.43
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yanagisawa, K., & Ovenstone, J. (1999). Crystallization of Anatase from Amorphous Titania Using the Hydrothermal Technique: Effects of Starting Material and Temperature. The Journal of Physical Chemistry B. https://doi.org/10.1021/jp990521c
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