Herein, Nitrogen doped Titanium dioxide (TiO₂) based photocatalysts were synthesized by sol-gel method with solvothermal process. The prepared N-doped TiO₂ were narrow size distribution and small average particle size (＞10nm). The synthesized TiO₂ samples showing very effective systems to extend the activating spectra to the visible range. The physicochemical properties of the photocatalysts were examined by XRD, N₂ physisorption studies, TGA, SEM-EDAX, UVvisible DRS and HR-TEM. The XRD results revealed that through varying the reaction conditions. N-doped TiO₂ crystals with different phase structure, morphology and crystallinity can be attained after calcination.