title: Sonocatalytic degradation of azo fuchsine in the presence of the Co-doped and Cr-doped mixed crystal TiO2 powders and comparison of their sonocatalytic activities.
abstract: In order to degrade some pollutants effectively under ultrasonic irradiation, the Co-doped and Cr-doped mixed crystal TiO(2) powders, with high sonocatalytic activity, were prepared as sonocatalyst. The Co-doped and Cr-doped mixed crystal TiO(2) powders as sonocatalyst were prepared through sol-gel and heat-treated methods from tetrabutylorthotitanate, and then were characterized by XRD and TG-DTA technologies. In order to compare and evaluate the sonocatalytic activity of the Co-doped and Cr-doped mixed crystal TiO(2) powders, the low power ultrasound was as an irradiation source and the azo fuchsine was chosen as a model compound to be degraded. The degradation process was investigated by UV-vis, TOC, ion chromatogram and HPLC techniques. The results indicated that the sonocatalytic activity of Cr-doped mixed crystal TiO(2) powder was higher than that of Co-doped and undoped mixed crystal TiO(2) powder during the sonocatalytic degradation of the azo fuchsine in aqueous solution. These results may be of great significance for driving sonocatalytic method to treat non- or low-transparent industrial wastewaters.
authors.affiliation: Department of Chemistry, Liaoning University, Shenyang 110036, People's Republic of China. wangjun890@126.com
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Yanhui
authors.initials: Y
authors.lastname: Lv
authors.forename: Zhaohong
authors.initials: Z
authors.lastname: Zhang
authors.forename: Yingqiao
authors.initials: Y
authors.lastname: Deng
authors.forename: Liquan
authors.initials: L
authors.lastname: Zhang
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.forename: Rui
authors.initials: R
authors.lastname: Xu
authors.forename: Xiangdong
authors.initials: X
authors.lastname: Zhang
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D002384:Catalysis; D002857:Chromium; D003035:Cobalt; D004396:Coloring Agents; D007220:Industrial Waste / Q000517:prevention & control*; D011208:Powders; D012394:Rosaniline Dyes / Q000737:chemistry*; D013010:Sonication / Q000379:methods*; D014025:Titanium; D014465:Ultrasonics; D014873:Water Pollutants / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D007220:Industrial Waste; D011208:Powders; D012394:Rosaniline Dyes; D014873:Water Pollutants; D002857:Chromium; C009495:titanium dioxide; D003035:Cobalt; D014025:Titanium