Title
Synthesis, structural characterization and photocatalytic activity of Ti-MCM-41 mesoporous molecular sievesSynthesis, structural characterization and photocatalytic activity of Ti-MCM-41 mesoporous molecular sieves
Author
Faculty/Department
Faculty of Sciences. Chemistry
Research group
Laboratory of adsorption and catalysis
Department of Chemistry
Publication type
article
Publication
Boston, Mass. :Kluwer Academic,
Subject
Chemistry
Source (journal)
Journal of porous materials. - Boston, Mass.
Volume/pages
16(2009):1, p. 109-118
ISSN
1380-2224
ISI
000262435200015
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
This paper reports the applicability of hydrothermal synthesis in alkaline medium for preparation of Ti-containing mesoporous MCM-41 materials. The influence of different parameters was investigated, such as the Ti source, the molar ratio between Si and Ti and also the synthesis temperature. Structural analysis shows that the high specific surface area, large pore size and well ordered mesostructure, are partially retained in the titania containing materials. Modifying synthesis temperature, it was shown that MCM-41 isotherms are different for temperatures above or under 140°C. UV-VisDR spectroscopy was used to investigate the local environment of Ti sites. The obtained materials were evaluated for the photocatalytic degradation of Rhodamine 6G in aqueous medium. The best photocatalytic activity was found for the sample prepared at higher ageing temperature of 160°C, at which anatase particles were formed.
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