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Synthesis of Ti-SBA-15 Doped with Lanthanide Ion and Photocatalytic Decomposition of Methylene Blue  

Jung, Won-Young (Department of Chemical Engineering, Pukyong National University)
Hong, Seong-Soo (Department of Chemical Engineering, Pukyong National University)
Publication Information
Applied Chemistry for Engineering / v.21, no.3, 2010 , pp. 323-327 More about this Journal
Abstract
Ti-SBA-15 catalysts doped with lanthanide ion were synthesized using conventional hydrothermal method and they were characterized by XRD, FT-IR, DRS, $NH_3$-TPD and PL. We also examined the activity of these materials on the photocatalytic decomposition of methylene blue. La/Ti-SBA-15 samples with varying lanthanide ions doping maintained the mesoporous structure and the catalysts calcined at $500^{\circ}C$ for 6 h showed the highest crystallinity. With increasing the doping amount of lanthanide ion, the pore size and pore volume of La/Ti-SBA-15 materials decreased but the surface area increased. 1% La/Ti-SBA-15 catalysts showed the highest photocatalytic activity on the decomposition of methylene blue but the catalysts doped with more than 5% lanthanide ions showed lower activity compared to pure Ti-SBA-15 catalyst.
Keywords
Ti-SBA-15 doped with lanthanide ion; photocatalytic decomposition of methylene blue;
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