화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.24, No.4, 596-599, July, 2007
DOI10.1007/s11814-007-0009-7  Export Citation
Preparation of TiO2/SiO2 hollow spheres and their activity in methylene blue photodecomposition
Hong Rok Kim, Ko Yeol Choi1, and Yong-Gun Shul†
  • Yonsei Center for Clean Technology, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-749, Korea
  • 1Department of Chemical Engineering, Seoul National University of Technology, Seoul 139-743, Korea
E-mail:
PSA [poly-(styrene-methyl acrylic acid)] latex particle has been taken into account as template material in SiO2 hollow spheres preparation. TiO2-doped SiO2 hollow spheres were obtained by using the appropriate amount of Ti(SO4)2 solution on SiO2 hollow spheres. The photodecomposition of the MB (methylene blue) was evaluated on these TiO2-doped SiO2 hollow spheres under UV light irradiation. The catalyst samples were characterized by XRD, UV-DRS, SEM and BET. A TiO2-doped SiO2 hollow sphere has shown higher surface area in comparison with pure TiO2 hollow spheres. The 40 wt% TiO2-doped SiO2 hollow sphere has been found as the most active catalyst compared with the others in the process of photodecomposition of MB (methylene blue). The BET surface area of this sample was found to be 377.6 m2g-1. The photodegradation rate of MB using the TiO2-doped SiO2 catalyst was much higher than that of pure TiO2 hollow spheres.
Keywords:Hollow Sphere;TiO2 Doped SiO2;Photocatalyst;UV Irradiation;Methylene Blue
  1. Caruso F, Caruso RA, Mohwald H, Science, 282(5391), 1111 (1998)
  2. Caruso F, Adv. Mater., 13, 11 (2001)
  3. Caruso F, Chem.-Eur. J., 6, 413 (2000)
  4. Lu Y, McLellan J, Xia YN, Langmuir, 20(8), 3464 (2004)
  5. Kobayashi Y, Gu SC, Kondo T, Mine E, Nagao D, Konno M, J. Chem. Eng. Jpn., 37(7), 912 (2004)
  6. Lee JK, Han SY, Park SK, Park YK, Lee CW, Korean J. Chem. Eng., 22(1), 42 (2005)
  7. Ollis DF, Al-Ekabi H, Photocatalysis purification and treatment of water and air, Elsevier, New York (1993)
  8. Hsien YH, Chang CF, Chen YH, Cheng SF, Appl. Catal. B: Environ., 31(4), 241 (2001)
  9. Kim HR, Lee TG, Shul YG, J. Photochem. Photobiol. A-Chem., 185, 156 (2007)
  10. Duran A, Serna C, Fornes V, Fernandez-Navarro JM, J. Non-Cryst. Solids, 82, 69 (1986)
  11. Belhekar AA, Awate SV, Anand R, Catal. Commun., 3, 453 (2002)
  12. Gandhe AR, Fernandes JB, J. Solid State Chem., 187, 2953 (2005)