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International Journal of Photoenergy
Volume 2014, Article ID 783531, 7 pages
http://dx.doi.org/10.1155/2014/783531
Research Article

Fabrication and Characteristics of Macroporous Photocatalyst

1School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo, Henan 454000, China
2Petroleum Engineering Research Institute of Dagang Oilfield, Tianjin 300270, China

Received 5 February 2014; Accepted 26 February 2014; Published 20 March 2014

Academic Editor: Jianliang Cao

Copyright © 2014 Guiyun Yi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Macroporous TiO2 photocatalyst was synthesized by a facile nanocasting method using polystyrene (PS) spherical particles as the hard template. The synthesized photocatalyst was characterized by transmission electron microscope (TEM), scanning electron microscopy (SEM), thermogravimetry-differential thermogravimetry (TG-DTG), X-ray diffraction (XRD), and N2-sorption. TEM, SEM, and XRD characterizations confirmed that the macroporous TiO2 photocatalyst is composed of anatase phase. The high specific surface area of 87.85 m2/g can be achieved according to the N2-sorption analysis. Rhodamine B (RhB) was chosen as probe molecule to evaluate the photocatalytic activity of the TiO2 catalysts. Compared with the TiO2 materials synthesized in the absence of PS spherical template, the macroporous TiO2 photocatalyst sintered at 500°C exhibits much higher activity on the degradation of RhB under the UV irradiation, which can be assigned to the well-structured macroporosity. The macroporous TiO2 material presents great potential in the fields of environmental remediation and energy conversion and storage.