Sonophotocatalytic degradation of methyl orange by carbon nanotube/TiO₂ in aqueous solutions

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• 作者：Shuo Wang ; Qianming Gong ; Ji Liang
• 关键词：Carbon nanotube ; TiO₂ ; Sonophotocatalysis ; Methyl orange
• 刊名：Ultrasonics Sonochemistry
• 出版年：2009
• 出版时间：February 2009
• 年：2009
• 卷：16
• 期：2
• 页码：205-208
• 全文大小：342 K

文摘

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.