Synthesis and Photocatalytic Properties of TiO2 Film with Hierarchical Structure Prepared by Sol-Gel Method

Mi Na Guli; Jian Xi Yao; Hong Xing Tian; Wang Ping Rao; Jing Yong Zhao

doi:10.4028/www.scientific.net/AMR.602-604.1413

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 602-604Synthesis and Photocatalytic Properties of TiO2...

Synthesis and Photocatalytic Properties of TiO2 Film with Hierarchical Structure Prepared by Sol-Gel Method

Abstract:

The TiO2 films with hierarchical structure consisting of porous structure and spinodal phase separation structure have been synthesized by sol-gel method. The influence of the different photomonomers, different coating times and different heat treatment temperatures on the structure and photocatalytic activity of TiO2 film has been investigated and the possible mechanism was proposed. The performances of as-prepared TiO2 films were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD). The photocatalytic activities of the as-prepared TiO2 films have been carried out by the degradation of methylene blue (MB) dye under the UV irradiation. The results indicated that the as-prepared TiO2 film with hierarchical structure exhibited significant photocatalytic activity, which might be due to its high specific surface area and high-speed electron migration that enhanced the subsequent photocatalytic reactions and led to a positive synergistic effect.

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Advanced Materials Research (Volumes 602-604)

Pages:

1413-1418

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.602-604.1413

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Online since:

December 2012

Authors:

Mi Na Guli, Jian Xi Yao, Hong Xing Tian, Wang Ping Rao, Jing Yong Zhao

Keywords:

Hierarchical Structure, Photocatalysis, Sol-Gel (SG), TiO₂ Film

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