Facile Synthesis of Self‐Sensitized TiO2 Photocatalysts and Their Higher Photocatalytic Activity
“Self‐sensitized” TiO2 photocatalysts sensitized by TiO2 nanocrystals with quantum structures were successfully prepared via a solvothermal process and a facile subsequent treatment process. We calculated
an optimized structure by using a pseudopotential Hartree–Fock method and investigated the structure using X‐ray diffraction, scanning, and transmission electron microscopy, and UV–Vis spectrophotometer. The self‐sensitized products exhibit an extremely high photocatalytic
activity due to their unique optical properties. To discuss the optical properties of the 3‐D nanoparticles sensitized by the TiO2 nanocrystals, we proposed a model of the electron band structure of the as‐prepared products to give a reasonable
explanation for such a high photocatalytic activity.