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http://dx.doi.org/10.5322/JES.2011.20.4.511

Photocatalytic Decomposition of Methylene Blue over Sm Ion Doped Ti-SBA-15 Catalysts  

Jung, Won-Young (Department of Chemical Engineering, Pukyong National University)
Lee, Seong-Hun (Department of Chemical Engineering, Pukyong National University)
Hong, Seong-Soo (Department of Chemical Engineering, Pukyong National University)
Publication Information
Journal of Environmental Science International / v.20, no.4, 2011 , pp. 511-517 More about this Journal
Abstract
Ti-SBA-15 catalysts doped with samarium ion were synthesized using conventional hydrothermal method. The physical properties of Sm/Ti-SBA-15 catalysts have been characterized by XRD, FT-IR, DRS and PL. In addition, we have also examined the activity of these materials on the photocatalytic decomposition of methylene blue. The Sm/ Ti-SBA-15 was shown to have the mesoporous structure regardless of Sm ion doping. With doping amount of 1% lanthanide ion, the pore size and pore volume of Sm(Er, Cs)/Ti-SBA-15 decreased and the surface area increased. For the purpose of vibration characteristics on the Ti-SBA-15 and Sm/Ti-SBA-15 photocatalysts, the IR absorption at 960 $cm^{-1}$ commonly accepted the characteristic vibration of Ti-O-Si bond. 1% of Sm/Ti-SBA-15 had the highest photocatalytic activity on the decomposition of methylene blue but the catalysts doped with Er ions had lower activity in comparison with pure Ti-SBA-15 catalyst.
Keywords
Sm/Ti-SBA-15 catalysts; Photocatalytic decomposition of methylene blue;
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