Fe-doped TiO2/SiO2 Aerogel Microspheres for Visible Light Photocatalysis Degradation of Methylene Blue

Ming Xian Liu; Li Hua Gan; Da Zhang Zhu; Zi Jie Xu; Zhi Xian Hao; Long Wu Chen

doi:10.4028/www.scientific.net/AMR.239-242.2993

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Fe-doped TiO₂/SiO₂ Aerogel Microspheres for Visible Light Photocatalysis Degradation of Methylene Blue
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Fe-doped TiO₂/SiO₂ Aerogel Microspheres for Visible Light Photocatalysis Degradation of Methylene Blue

Abstract:

In this paper, we present a strategy for the preparation of Fe-doped TiO₂/SiO₂ aerogel microspheres (Fe-TSAMs) for visible light photocatalysis degradation of methylene blue. A water- in-oil (W/O) emulsion of Span 80–Tween 85/n-heptane–n-butanol/FeCl₃-doped TiO₂/SiO₂ alcoholic sols–formamide was obtained. Wet TiO₂/SiO₂ gel microspheres were prepared by the sol-gel process in the W/O emulsion, then they were dried at ambient pressure condition to prepare Fe-TSAMs. The Fe-TSAMs were characterized by N₂ adsorption and desorption, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results indicate that the resultant Fe-TSAMs possess nanoporous network structure comprising TiO₂ and SiO₂ nanoparticles with diameters of 10-20 nm. The Fe-TSAMs have a mean diameter of about 100 μm, an apparent density of 0.26 g/cm³, a specific surface area of 360 m²/g, a pore volume of 1.77 cm³/g and the most probable pore size of 18.7 nm with the porosity of 87.7%. By using methylene blue as a simulated aqueous pollutant, the visible light photocatalysis properties of the Fe-TSAMs were investigated. The results indicate that low concentration Fe ion doping (5 wt%) could avoid the formation of recombination centers for photo-generated electron/hole pairs. Compared with commercial P25 TiO₂ powders, Fe-TSAMs exhibit excellent photocatalytic ability for degradation of methylene blue under visible light region. The Fe-TSAMs could be reclaimed conveniently and the reused Fe-TSAMs also have a good photocatalytic activity.

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Periodical:

Advanced Materials Research (Volumes 239-242)

Pages:

2993-2996

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.239-242.2993

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Online since:

May 2011

Authors:

Ming Xian Liu, Li Hua Gan, Da Zhang Zhu, Zi Jie Xu, Zhi Xian Hao, Long Wu Chen

Keywords:

Fe-Doped TiO₂/sio₂ Aerogel Microsphere, Methylene Blue (MB), Visible Light Photocatalysis

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References

[1] A. Fujishma and K. Honda: Nature Vol.238 (1972), p.37.

Google Scholar

[2] M. Schiavello: Photocatalysis and Environment: Trends and Applications (Kluwer Academic Publishers, Dordrecht 1988).

Google Scholar

[3] M. R. Hoffmann, S. T. Martin, W. Choi and D. W. Bahnemann: Chem. Rev.Vol.95(1995), p.69.

Google Scholar

[4] L. Gan, Y. Wang, Z. Hao, Z. Xu and L. Chen: Chin. J. Chem. Eng. Vol.13 (2005), p.758.

Google Scholar

[5] X. H. Wang, J. G. Li, H. Kamiyama and T. Ishigaki: Thin Solid Films 2006, 506-507: p.278.

Google Scholar

[6] G. M. Pajonk: Catalysis Today Vol. 52 (1999), p.3.

Google Scholar

[7] M. S. Ahmed and Y. A. Attia: J. Non-Cryst. Solids Vol. 186 (1995), p.402.

Google Scholar

[8] Y. Wang, L. Chen, L. Gan and J. Hou: Chem J. Chin. Univ. Vol.25 (2004), p.325.

Google Scholar

[9] J. Wang, S. Uma and K. J. Klabunde, Applied Catalysis B Vol.48 (2004), p.151.

Google Scholar

[10] C.P. Alain and M. P. Gérard: Chem. Rev. Vol.102 (2002), p.4243.

Google Scholar

[11] R. Asahi, T. Morikawa, T. Ohwaki, K. Aoki and Y. Taga: Science Vol.293 (2001), p.269.

Google Scholar

[12] J. Yu, H. Yu, C. H. Ao, S. C. Lee, J. C. Yu and W. Ho: Thin Solid Films Vol. 496 (2006), p.273.

DOI: 10.1016/j.tsf.2005.08.352

Google Scholar

[13] Y. Pang, L. Gan, Z. Hao, Z. Xu and L. Chen: Acta. Physico-Chim. Sin. Vol.21 (2005), p.1363.

Google Scholar

[14] R. Dholam, N. Patel, M. Adami and A. Miotello: Int. J. Hydro. Energy Vol.34 (2009), p.5337.

Google Scholar