The highly crystallized lepidocrocite nanosheets of TiO2 was synthesized by hydrothermal methods at low temperature by using dodecanediamine (DDA) as a surfactant. The above structural features of the titanium oxide nanosheets were confirmed by transmission electron microscopy (TEM), selected area electron diffraction (SAED), X-ray diffraction (XRD) and UV-vis optical spectra analysis.