کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9607986 46031 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of titania-silica mixed oxide mesoporous materials, characterization and photocatalytic properties
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Synthesis of titania-silica mixed oxide mesoporous materials, characterization and photocatalytic properties
چکیده انگلیسی
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 (8 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 284, Issues 1–2, 28 April 2005, Pages 193-198
نویسندگان
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