Abstract
Photodegradation of methylene blue on a carbon-doped TiO 2 and on pure TiO 2 was studied. The materials were prepared by solvothermal synthesis and by calcinations. N 2 adsorption, XRD, SEM and TEM characterization was performed. Both nanomaterials exhibited mesoporous textures and the TiO 2 frameworks consist mainly of anatase phase. SEM images showed spherical microparticles while the TEM images showed hierarchically nanostructured morphologies on both samples. C-TiO 2 exhibited higher apparent first-order rate constants for the degradation of methylene blue than those obtained on pure TiO 2. It could be concluded that under visible light, the photoactivity of carbon-doped TiO 2 was clearly higher than that of a commercial TiO 2 photocatalyst suggesting that the carbon part photo assist the TiO 2 in the photodegradation of methylene blue.
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