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

Sm이온이 도핑된 Ti-SBA-15 촉매에서의 메틸렌블루의 광촉매 분해 반응

  • 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)
  • Received : 2011.01.24
  • Accepted : 2011.03.11
  • Published : 2011.04.30

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

Acknowledgement

Supported by : 부경대학교

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