Preparation of TiO2-Fullerene Composites and Their Photocatalytic Activity under Visible Light

The development of visible light-sensitive photocatalytic materials is being investigated. In this study, the anatase and rutile-C 60 composites were prepared by solution process. The characterization of the samples was conducted by using XRD, UV-vis, FT-IR, Raman, and TEM. The photocatalytic activity of the samples was evaluated by the decolorization of the methylene blue. From the results of the Raman, FT-IR, and XRD, the existence of the C 60 was confirmed in the samples. The C 60 was modified on the anatase or rutile particle as a cluster. The C 60 didn't have the photocatalytic activity under UV and visible light. The anatase and rutile-C 60 composites exhibited lower photocatalytic activity than the anatase and rutile under UV light. The anatase-C 60 exhibited also lower activity than the anatase under visible light. On the other hand, the rutile-C 60 exhibited higher activity than the rutile under visible light. It is considered that the photogenerated electrons can transfer from the C 60 to the rutile under visible light irradiation.