Treatment of nano-sized rutile phase TiO2 powder under ultrasonic irradiation in hydrogen peroxide solution and investigation of its sonocatalytic activity.
The treated mixed-crystal TiO(2) 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 TiO(2) 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 TiO(2) powder was much higher than ones in the presence of nano-sized rutile phase TiO(2) 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 NO(3)(-), SO(4)(2-) and Cl(-). All experiments indicated that the sonocatalytic method adopting treated mixed-crystal TiO(2) powder as sonocatalyst was an advisable choice for the treatments of non- or low-transparent wastewaters in future.
Wang
Jun
J
Department of Chemistry, Liaoning University, Shenyang 110036, PR China. Electronic address: wangjun890@126.com.
Sun
Wei
W
Department of Chemistry, Liaoning University, Shenyang 110036, PR China.
Zhang
Zhaohong
Z
Department of Environment Science, Liaoning University, Shenyang 110036, PR China.
Xing
Zhiqiang
Z
Department of Chemistry, Liaoning University, Shenyang 110036, PR China.
Xu
Rui
R
Department of Chemistry, Liaoning University, Shenyang 110036, PR China.
Li
Ronghe
R
Department of Chemistry, Liaoning University, Shenyang 110036, PR China.
Li
Ying
Y
Department of Chemistry, Liaoning University, Shenyang 110036, PR China.
Zhang
Xiangdong
X
Department of Chemistry, Liaoning University, Shenyang 110036, PR China.
D002384:Catalysis; D004396:Coloring Agents; D006358:Hot Temperature; D006861:Hydrogen Peroxide / Q000737:chemistry* / Q000528:radiation effects*; D008751:Methylene Blue; D053758:Nanoparticles / Q000737:chemistry* / Q000528:radiation effects*; D010316:Particle Size; D011208:Powders; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects*; D014465:Ultrasonics; D014961:X-Ray Diffraction
D004396:Coloring Agents; D011208:Powders; D012996:Solutions; C009495:titanium dioxide; D006861:Hydrogen Peroxide; D014025:Titanium; D008751:Methylene Blue