PHYSICAL STABILIZATION OF ANATASE (TIO2) BY FREEZE-DRYING

Authors
IZUTSU H NAIR PK MIZUKAMI F
Citation
H. Izutsu et al., PHYSICAL STABILIZATION OF ANATASE (TIO2) BY FREEZE-DRYING, Journal of materials chemistry, 7(6), 1997, pp. 855-856
Citations number
13
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Journal of materials chemistry → ACNP
ISSN journal
09599428
Volume
7
Issue
6
Year of publication
1997
Pages
855 - 856
Database
ISI
SICI code
0959-9428(1997)7:6<855:PSOA(B>2.0.ZU;2-1
Abstract
The anatase phase of titania has been stabilized without chemically mo difying the system, by changing the level of packing within the aggreg ates by freeze-drying the water-washed precipitate obtained by the hyd rolysis of titanium isopropoxide. After calcination at 700 degrees C f or 8 h, freeze-dried samples showed more than 97% anatase phase with a surface area and porosity of 29 m(2) g(-1) and 37% respectively. The oven-dried samples showed a surface area and porosity of 5 m(2) g(-1) and 10% respectively.