Abstract: Anatase TiO₂ nanomaterials with different morphology and exposed high-energy facets were hydrothermal synthesized by using the exfoliated layered titanated H₂Ti₄O₉/H₂Ti₅O₁₁ nanosheets compound and tetramethylammonium hydroxide as the precursor and the morphology controlling agent, respectively. The prepared anatase TiO₂ nanomaterials were characterized by the powder X–ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), and the photodegradation properties of methylene blue (MB) were studied. Compared with other TiO₂ nanomaterials, the rod-like anatase pH1.5–TiO₂ nanomaterials with co-exposed 001, 100 and 010 exhibited the highest photocatalytic activity for the degradation of methylene blue solution. And the degradation rate of methylene solution was 95.27% under UV irradiation for 120 min.