Synthesis, Characterizations and Photocatalytic Activity of Mesoporous TiO₂ Using Typha Latifolia as Template

Abstract:

Typha latifolia were successfully used as template to synthesize mesoporous titania and silica with efficient photocatalytic activity under solar and visible light. Both two titania and silica samples were characterized by a combination of various physicochemical techniques, such as, N₂ adsorption/ desorption isotherm, diffuse reflectance UV-vis, and X-ray diffraction. It was found that both two synthesized samples exhibited similar morphologies to the original templates. The presence of the residual carbon species of mesoporous titania and silica strongly affects their photocatalytic activity. The photoactivity of P25 TiO₂ could not almost exhibit while both mesoporous titania and silica samples exhibited varied photoactivities for dyes under visible light, due to the presence of the residual carbon species. Moreover, as a whole the titania sample enhanced the higher photocatalytic activity than the silica sample under both solar and visible light.

• Periodical: Advanced Materials Research (Volume 1053)
• Pages: 495-502
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1053.495
• Online since: October 2014
• Authors: Ying Chun Miao, Guang Chen, Xiao Ling Xu
• Keywords: Photocatalyst, TiO₂, Typha Latifolia, Visible Light

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