Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9607986 | Applied Catalysis A: General | 2005 | 6 Pages |
Abstract
Titania-silica mixed metal oxide materials with a mesostructure have been prepared by a novel method in which hydrolysis and condensation of titanium tetraisopropoxide (TTIP) and tetraethoxysilane (TEOS) were controlled by the pH change of acidic solution using cetyltrimethylammonium bromide (CTAB) as the structure-directing agent. The prepared materials were characterized by TEM, XRD, XPS, FT-IR and nitrogen sorption. The resulting materials showed a short-range ordered mesoporous structure with the nanoparticles (8Â nm) of TiO2 dispersed uniformly on SiO2 supports. These TiO2-SiO2 mesoporous materials were also found to have a higher photocatalytic activity than that of commercial pure TiO2 nanoparticles at the same titanium loading for the degradation of methyl orange.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Xin Zhang, Feng Zhang, Kwong-Yu Chan,