Phase transformation of protonic layered tetratitanate under solvothermal conditions

Authors
Yin, S Uchida, S Fujishiro, Y Aki, M Sato, T
Citation
S. Yin et al., Phase transformation of protonic layered tetratitanate under solvothermal conditions, J MAT CHEM, 9(5), 1999, pp. 1191-1195
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS CHEMISTRY
ISSN journal
09599428 → ACNP
Volume
9
Issue
5
Year of publication
1999
Pages
1191 - 1195
Database
ISI
SICI code
0959-9428(199905)9:5<1191:PTOPLT>2.0.ZU;2-3
Abstract
Phase transformation behaviour of the protonic layered tetratitanate, H2Ti4 O9. nH(2)O, in air, water, methanol and ethanol has been investigated. H2Ti 4O9. nH(2)O transformed in a series of steps to H2Ti8O17, monoclinic TiO2, anatase and rutile. All products retained fibrous morphology similar to tha t of K2Ti4O9 used as the starting material, however, the phase transformati on temperature and the microstructure of the products changed significantly depending on the hearing environment. Nanosize crystals of TiO2 possessing high crystallinity could be obtained by solvothermal reactions using water , methanol and ethanol as reaction media.