Preparation and Photocatalytic Study of TiO2-SiO2 Macroporous Film

doi:10.7517/j.issn.1674-0475.2015.05.383

Abstract

Abstract:

In this work, the TiO₂-SiO₂ sol was prepared by a modified sol-gel method, which exhibited the anatase and small crystal size. And then the macroporous TiO₂-SiO₂ film was synthesized by using polystyrene spheres as the template and TiO₂-SiO₂ sol as the precursor, via the spinning-coating combined with calcination technology. We investigated the impact of calcination temperature, Ti/Si ratio and concentration of sol on the microstructure and photocatalytic activity of macroporous TiO₂-SiO₂ film. We also studied the UV/solar light photcoatalytic activity for the degradation of rhodamin B over the composite film after a vacuum activation treatment. The RAMAN,DRS,SEM,EPR, and other characterizations were used to study a serials of TiO₂-SiO₂ films, as a result, the as-prepared film showed a good transparent property, excellent adhesion and photcatalytic activity.

Key words: macroporous films, titania, polystyrene spheres, vacuum activation, photocatalysis

YANG Xiaolong, PAN Yue, XING Mingyang, ZHANG Jinlong. Preparation and Photocatalytic Study of TiO₂-SiO₂ Macroporous Film[J]. Imaging Science and Photochemistry, 2015, 33(5): 383-393.

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Preparation and Photocatalytic Study of TiO₂-SiO₂ Macroporous Film

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