Synthesis and characterization of carbon modified TiO2 nanotube and photocatalytic activity on methylene blue under sunlight.

Carbon modified TiO 2 nanotube was successfully synthesized via anodic oxidation method and its photocatalytic activity was evaluated by photodegrading methylene blue. The full width at half maximum of carbon modified TiO 2 nanotube is smaller than that of pristine TiO 2 nanotube, indicating the fact that carbon modifying leads to the increase of TiO 2 crystallinity. TiO 2 nanotube modified by carbon has a great enhancement on visible light absorption while contrasting with the pristine TiO 2 nanotube. A tentative mechanism for the enhancement of sunlight absorption is proposed. [ABSTRACT FROM AUTHOR]