Fabrication of Magnetic TiO₂ Composite and Its Photocatalytic Activity on Reactive Orange

Abstract

Using magnetic nanoparticles as cores we successfully fabricated magnetic TiO₂ composite by sol-gel method, which was simple and effective. The morphologies and structure of the products were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The photocatalytic activity of magnetic TiO₂ composite was investigated by decomposing reactive orange under the mercury lamp irradiation. In the presence of magnetic TiO₂ composite the degradation rate of reactive orange was studied and the effects of various experimental factors on the photocatalytic performance were investigated. Compared with that of TiO₂ sample, magnetic TiO₂ composite expressed the higher photocatalytic activity.

Keywords:

• Magnetic TiO₂ composite
• photocatalyst
• reactive orange

Acknowledgments

This research was financially supported by Foundation of Zhejiang Educational Committee of China (Grant No. Y200805544) and by the National Science Foundation for Young Scientists of China (Grant No. 20901051).