title: Degradation of methyl orange through synergistic effect of zirconia nanotubes and ultrasonic wave.
abstract: Zirconia nanotubes with a length of 25 μm, inner diameter of 80 nm, and wall thickness of 35 nm were prepared by anodization method in mixture of formamide and glycerol (volume ratio = 1:1) containing 1 wt% NH(4)F and 1 wt% H(2)O. Experiments showed that zirconia nanotubes and ultrasonic wave had synergistic degradation effect for methyl orange and the efficiency of ultrasonic wave increased by more than 7 times. The decolorization percentage was influenced by pH value of the solution. Methyl orange was easy to be degraded in acidic solution. The decolorization percentage of methyl orange reached 97.6% when degraded for 8h in 20mg/L methyl orange solution with optimal pH value 2. The reason of synergistic degradation effect for methyl orange might be that adsorption of methyl orange onto zirconia nanotubes resulted in the easy degradation of the methyl orange through ultrasonic wave.
authors.affiliation: School of Material Science and Engineering, Hebei University of Technology, Dingzigu Road 1, Tianjin 300130, China.
authors.forename: Jianling
authors.initials: J
authors.lastname: Zhao
authors.forename: Xixin
authors.initials: X
authors.lastname: Wang
authors.forename: Libin
authors.initials: L
authors.lastname: Zhang
authors.forename: Xiaorui
authors.initials: X
authors.lastname: Hou
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.forename: Chengchun
authors.initials: C
authors.lastname: Tang
mesh_terms: D001391:Azo Compounds / Q000737:chemistry* / Q000528:radiation effects; D007220:Industrial Waste / Q000517:prevention & control*; D043942:Nanotubes / Q000737:chemistry*; D014465:Ultrasonics; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000528:radiation effects; D015040:Zirconium / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; C100258:methyl orange; D015040:Zirconium; C028541:zirconium oxide