Sol-Gel Preparation of Bi2InTaO7 and its Photocatalytic Behavior for Organic Compounds Degradation
In this work it was carried out the synthesis of Bi2InTaO7 pyrochlore-type structure compound by the sol-gel method. By X-Ray powder diffraction the sol-gel compound calcined at 600°C showed the pyrochlore-type structure phase and by scanning electron microscopy its morphology revealed the presence of particles with size lower than 1 micron. Its chemical elemental composition was determined by EDS analysis. Results of SBET area and Eg values of this compound suggested higher properties than those obtained by the compound prepared by solid state reaction. Bi2InTaO7 sol-gel was used as active photocatalyst on the degradation reaction of organic compounds such as Alizarin Red S, and Red and Green Tide, under UV-light. Half time life results showed that Bi2InTaO7 sol-gel compound could be a good candidate for the degradation of organic compounds because after few minutes showed high efficiency on the degradation reaction of Alizarin Red S (t1/2 = 30 min), and Green Tide inactivation (t1/2 = 17 min).
Hyungsun Kim, JianFeng Yang, Tohru Sekino, Masakazu Anpo and Soo Wohn Lee
L. M. Torres-Martínez et al., "Sol-Gel Preparation of Bi2InTaO7 and its Photocatalytic Behavior for Organic Compounds Degradation", Materials Science Forum, Vol. 658, pp. 491-494, 2010