Experimental and computational study of visible light-induced photocatalytic ability of nitrogen ions-implanted TiO2 nanotubes |
The band structure of I–N-doped TiO2 (a), S–N-doped TiO2 (b). The density of states (DOS) of I–N-doped TiO2 (c), S–N doped TiO2 (d). The dashed lines represent the Fermi level |