中文摘要：

用两步水热合成方法制备硼掺杂纳米晶TiO2粉体,研究了硼在纳米晶氧化钛中的掺杂状态.结果表明,一定硼源加入和水热过程是在TiO2粉体中实现有效硼掺杂的必要条件.当硼含量较高时,硼原子在TiO2表面形成具有可调节TiO2能带结构的B-Ti-O表面掺杂态,可有效提高TiO2的可见光吸收性能,而且可见光吸收强度随着硼掺杂量的增大而提高.

英文摘要：

The B-doped nanocrystalline TiO2 powders were synthesized through a two-step hydrothermal route, and the doping states of boron in nanocrystalline TiO2 powders were investigated. The results show that a certain amount of boron source and hydrothermal route are essential to create effective B-doping. Boron atoms with a higher boron concentration can interact with TiO2 surface and create a B-Ti-O surface doping state to modify the band structure of TiO2. The B-Ti-O structure is essential for good visible light absorption according to UV-visible absorption spectra. Furthermore, the absorption intensity of the doped TiO2 increases with the concentration of B- doping increasing.