CONTROLLING CRYSTALLINITY DURING PROCESSING OF NANOCRYSTALLINE TITANIA

Authors
HAGUE DC MAYO MJ
Citation
Dc. Hague et Mj. Mayo, CONTROLLING CRYSTALLINITY DURING PROCESSING OF NANOCRYSTALLINE TITANIA, Journal of the American Ceramic Society, 77(7), 1994, pp. 1957-1960
Citations number
21
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the American Ceramic Society → ACNP
ISSN journal
00027820
Volume
77
Issue
7
Year of publication
1994
Pages
1957 - 1960
Database
ISI
SICI code
0002-7820(1994)77:7<1957:CCDPON>2.0.ZU;2-6
Abstract
The present study shows that an extremely high water:alkoxide ratio du ring the hydrolysis of titanium isopropoxide results in a partially cr ystalline precipitate (5-nm anatase crystallites); however, when these crystallites are rinsed with ethanol, the precipitate becomes amorpho us. The degree of crystallinity of the precipitate determines its subs equent thermal decomposition characteristics and, ultimately, the crys tallite size of the calcined powder.