过渡金属离子掺杂纳米TiO_2的机理和光吸收特性

Doping Mechanism of TiO_2 with Transitional Metal Ions and Their Effects on Light Absorption Characteristics

综述了过渡金属离子掺杂改性 Ti O2 的光催化性能及掺杂离子的原子摩尔分数、半径、化合价等因素对 Ti O2 光催化性能的影响。同时结合具体实验结果 ,分析了掺 Fe3+ Ti O2 的光吸收特性。结果表明 ,Ti O2 的吸收阀值随掺 Fe3+量的增加而增大 ,拓宽了光响应范围 。

The mechanism of doping metal ions into TiO 2 is reviewed. The effects of concentration, radius and valences of doped ions on photocatalytic performance of TiO 2 are discussed.The light absorption performance of Fe 3+ doped TiO 2 is studied according to the absorption spectra.