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Investigation on transition crystal of ordinary rutile TiO2 powder and its sonocatalytic activity.

Wang J, Ma T, Zhang Z, Zhang X, Jiang Y, Zhang G, Zhao G, Zhao H, Zhang P

Department of Chemistry, Liaoning University, Shenyang 110036, PR China.

The transition crystal TiO(2) sonocatalyst was prepared utilizing the method of ultrasonic irradiation in hydrogen peroxide solution. The sonocatalytic activity of the transition crystal TiO(2) powder was validated through the degradation of methyl orange in aqueous solution by ultrasonic irradiation. The results show that the sonocatalytic activity of the transition crystal TiO(2) powder is obviously higher than that of pure rutile and anatase TiO(2) powders as well as mixed rutile and anatase TiO(2) powders according to the proportion of corresponding transition crystal TiO(2) catalyst. The degradation ratio of methyl orange in the presence of the transition crystal TiO(2) catalyst surpasses 75% within 80 min ultrasonic irradiation, while the degradation ratios are 55.93%, 51.68% and 40.88%, respectively, for rutile, mixed and anatase TiO(2) powders.

Published 10 October 2006 in Ultrason Sonochem, 14(2): 246-52.
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