The existing states of doped B3+ ions on the B doped TiO2.

A series of B doped TiO 2 samples were synthesized by a simple sol–gel method. The existing states, doping behavior and the influence on the phase transition for the introduced boron ions are investigated and studied in details. It is noted that the B 3+ ions are mainly incorporated into TiO 2 lattice in interstitial mode. The excessive B 3+ ions form surface B 2 O 3 species on the surface of TiO 2 with the increase amount of boron ions. Furthermore, the introduction of B 3+ ions in interstitial mode inhibits the formation of rutile and delay the phase transition. These results afford better realization about the doping mechanism of B doped TiO 2 . [ABSTRACT FROM AUTHOR]