Treatment of nano-sized rutile phase TiO2 powder under ultrasonic irradiation in hydrogen peroxide solution and investigation of its sonocatalytic activity

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Abstract

The treated mixed-crystal TiO2 powder with high sonocatalytic activity was obtained through utilizing ultrasonic irradiation in hydrogen peroxide solution. At the same time, some influencing factors (including heat-treated temperature and heat-treated time) on the sonocatalytic activity of treated mixed-crystal TiO2 powder were also considered through the degradation of methylene blue in aqueous solution. In this work, it was found that the sonocatalytic degradation ratio of methylene blue in the presence of treated mixed-crystal TiO2 powder was much higher than ones in the presence of nano-sized rutile phase TiO2 powder and with onefold ultrasonic irradiation. At last, the methylene blue in aqueous solution was completely degraded and became some simple inorganic anions such as NO3-, SO42 - and Cl-. All experiments indicated that the sonocatalytic method adopting treated mixed-crystal TiO2 powder as sonocatalyst was an advisable choice for the treatments of non- or low-transparent wastewaters in future. © 2007.

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Wang, J., Sun, W., Zhang, Z., Xing, Z., Xu, R., Li, R., … Zhang, X. (2008). Treatment of nano-sized rutile phase TiO2 powder under ultrasonic irradiation in hydrogen peroxide solution and investigation of its sonocatalytic activity. Ultrasonics Sonochemistry, 15(4), 301–307. https://doi.org/10.1016/j.ultsonch.2007.07.001

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