a b s t r a c tThis study introduces a simple and fluorine free route to synthesize nitrogen and lanthanum co-doped TiO 2 nanocrystals with exposed {0 0 1} facets through one-step hydrothermal method. The microstructure, chemical composition, and photocatalytic property of the co-doped TiO 2 nanosheets were analyzed using XRD, FESEM, TEM, XPS and UV-vis. The experimental results indicated that N had been successfully doped into TiO 2 lattice, while La was likely to form a binary nanocomposite with TiO 2 . The co-doped TiO 2 nanosheets showed an additional visible light absorption band starting from 400 nm, which could improve the visible light photocatalytic activity of the sample. As the shape-controlling agent, DEA plays a crucial role in the formation of {0 0 1} facets. N and La co-doping could produce a synergistic effect. N doping can narrow the band gap of anatase TiO 2 and increase the utilization efficiency of visible light, while La doping can enhance the separation efficiency of photo-induced electrons and holes. N and La co-doped TiO 2 nanosheets exhibited higher visible light photocatalytic activity compared with P25, N doped TiO 2 nanosheets and N, La co-doped TiO 2 nanoparticles with the same doping concentration. In addition, N and La co-doped TiO 2 nanosheets showed well recycling performance.