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ISRN Materials Science
Volume 2012 (2012), Article ID 719087, 6 pages
http://dx.doi.org/10.5402/2012/719087
Research Article

Low-Temperature Synthesis of -BiTa Photocatalyst by the Flux Method

Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan

Received 15 September 2012; Accepted 19 October 2012

Academic Editors: F. Collins and R. A. Varin

Copyright © 2012 Kohei Shimada 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

Low-temperature phase BiTaO4 (α-BiTaO4) was successfully synthesized by the flux method using Bi2O3-B2O3 as the flux. According to previous reports, α-BiTaO4 has been mostly synthesized via a solid state reaction, which requires heating at 900°C for more than 48 h. In this study, α-BiTaO4 was successfully synthesized in 4 h at 750°C using the flux method. The impact of varying reaction conditions on the products was analyzed by X-ray diffraction and a scanning electron microscopy analysis. The grain size of α-BiTaO4 was dependent on reaction conditions such as the reaction temperature and solute concentration. The photocatalytic activity of the obtained α-BiTaO4 was evaluated for the degradation of phenol. It was found that flux-synthesized α-BiTaO4 exhibited a higher photocatalytic activity than α-BiTaO4 synthesized using the solid state method.