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Report No.

Fabrication and characterization of C-doped anatase TiO$$_{2}$$ photocatalysts

Choi, Y.; Umebayashi, Tsutomu; Yoshikawa, Masahito

Carbon (C)-doped anatase TiO$$_{2}$$ photocatalysts have been prepared by the oxidative annealing of TiC powders at 623 K for 50-100 hrs. From XRD and XPS analysis, it is clear that C is incorporated into O site of the TiO$$_{2}$$ lattice. Diffuse reflectance spectroscopy (DRS) showed that the optical absorption edge of the C-doped anatase TiO$$_{2}$$ shifted to lower energy compared with that of pure anatase TiO$$_{2}$$. The decomposition of methylene blue (MB) adsorbed on the C-doped sample was observed under a visible light range of 420-500 nm. We conclude that substitution of C for O in the TiO$$_{2}$$ leads to a photocatalytic decomposition of MB under visible light irradiation.



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Category:Materials Science, Multidisciplinary



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