Preparation and Performance of Mesoporous TiO₂ Photocatalyst with P123 as Template

Abstract:

In this paper, a series of mesoporous TiO₂ photocatalyst were prepared by hydrothermal method using block copolymer P123 as template and Ti (OBu)₄ as titanium source. The microstructure and spectroscopy performance of the prepared TiO₂ were characterized by means of XRD, SEM, TEM, BET, and BJH analysis, and the photocatalytic activity of mesoporous TiO₂ were examined by measuring the photodegradation of methyl orange , then discussed the best prepared conditions of mesoporous TiO₂ photocatalyst. The results showed that the products were all anatase mesoporous TiO₂ nanopowder, the average particle size is about 7nm and all have the Langmuir type IV pore structure. The best prepared condition: hydrothermal temperature is 160°C, hydrothermal time is 24h, mesoporous TiO₂ photocatalyst has the BET surface area of 146m²/g , it’s photocatalytic degradation rate is 97.07% in an hour.

• Periodical: Key Engineering Materials (Volume 680)
• Pages: 198-202
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.680.198
• Online since: February 2016
• Authors: Chao Wang, Si Qin Zhao*, S. Asuha
• Keywords: Mesoporous TiO₂, P123, Photocatalytic Activity

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