Preparation and Photocatalytic Activity of Laden SiO2/TiO2 Composite Photocatalyst

Abstract:

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SiO2/TiO2 photocatalyst was prepared by a sol-gel method applying tetrabutyl titanate as the precursor and cullets as the carrier. The optimal preparing conditions of the SiO2/TiO2 composite photocatalyst were optimized. The optimal conditions included 2:1 of the molar ratio of tetraethyl orthosilicate to tetrabutyl titanate, 3 load times, 600°C of calcinations temperature, 3 h of calcination time, 3 mL of the dosage of CH3COOH and 5:1 of the molar ratio of water to tetrabutyl titanate. The photodegradation percentage of methylene blue could reach 92.26% under the above optimal conditions. Moreover, after three times of the repeated use, the SiO2/TiO2 composite photocatalyst still had a relatively high catalytic activity and stability, and the recycle percentage of the photocatalyst could reach 92.80%.

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Periodical:

Edited by:

Aimin Yang, Jingguo Qu and Xilong Qu

Pages:

504-508

DOI:

10.4028/www.scientific.net/AMM.84-85.504

Citation:

A. Yan et al., "Preparation and Photocatalytic Activity of Laden SiO2/TiO2 Composite Photocatalyst", Applied Mechanics and Materials, Vols. 84-85, pp. 504-508, 2011

Online since:

August 2011

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$35.00

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