Preparation of TiO2/SiO2 hollow spheres and their activity in methylene blue photodecomposition

被引：0
作者：
Kim H.R. [1 ]
Choi K.Y. [2 ]
Shul Y.-G. [1 ]
机构：
[1] Yonsei Center for Clean Technology, Yonsei University, Seodaemun-gu, Seoul 120-749
[2] Department of Chemical Engineering, Seoul National University of Technology
来源：
Korean Journal of Chemical Engineering | 2007年 / 24卷 / 4期
关键词：
Hollow sphere; Methylene blue; Photocatalyst; TiO[!sub]2[!/sub] Doped SiO[!sub]2[!/sub; UV irradiation;
D O I：
10.1007/s11814-007-0009-7
中图分类号：
学科分类号：
摘要：
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 TiO 2-doped SiO2 catalyst was much higher than that of pure TiO2 hollow spheres. © 2007 Springer.
引用
收藏
页码：596 / 599
页数：3
相关论文
共 12 条
  • [1] Caruso F., Caruso R.A., Mohwald H., Science, 282, (1998)
  • [2] Caruso F., Adv. Mater., 13, (2001)
  • [3] Caruso F., Chem.-Eur. J., 6, (2000)
  • [4] Lu Y., McLellan J., Xia Y., Langmuir, 20, (2004)
  • [5] Kobayashi Y., Gu S., Kondo T., J. Chem. Engin. of Japan, 37, (2004)
  • [6] Lee J.K., Han S.Y., Park S.-K., Park Y.-K., Lee C.W., Korean J. Chem. Eng., 22, (2005)
  • [7] Ollis D.F., Al-Ekabi H., Photocatalysis Purification and Treatment of Water and Air, (1993)
  • [8] Hsien Y.H., Chang C.F., Chen Y.H., Cheng S., Appl. Catal. B, 31, (2001)
  • [9] Kim H.R., Lee T.G., Shul Y.G., J. Photochem. Photobiol. A, 185, (2007)
  • [10] Duran A., Serna C., Formes V., Fernandez-Navarro J.M., J. Non-Cryst. Solids, 82, (1986)
12