Sonophotocatalytic degradation of methyl orange by carbon nanotube/TiO2 in aqueous solutions.
In this study, carbon nanotubes (CNTs)/TiO2 composite were prepared and the sonophotocatalytic activity of CNTs/TiO2 nanoparticles was investigated, in which methyl orange (MO) was chosen as an object. The results indicate that the photocatalytic efficiency of CNTs/TiO2 remarkable increases in the presence of ultrasound, and the sonophotocatalysis process followed a first-order kinetics. The kinetic constant of CNTs/TiO2 for the MO degradation is 2.2 times higher than that of P25, which indicated that the sonophotocatalytic ability of CNTs/TiO2 is obviously higher than P25 powder.
Wang
Shuo
S
Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China. wangshuo04@mails.tsinghua.edu.cn
Gong
Qianming
Q
Liang
Ji
J
D001391:Azo Compounds / Q000737:chemistry* / Q000528:radiation effects*; D002384:Catalysis; D007202:Indicators and Reagents; D007700:Kinetics; D046529:Microscopy, Electron, Transmission; D043942:Nanotubes / Q000737:chemistry* / Q000528:radiation effects*; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects*; D014465:Ultrasonics; D014867:Water
D001391:Azo Compounds; D007202:Indicators and Reagents; D012996:Solutions; D014867:Water; C009495:titanium dioxide; C100258:methyl orange; D014025:Titanium