铁、铬离子掺杂对TiO2薄膜光催化活性的影响

采用溶胶-凝胶法在釉面砖表面制备了均匀的TiO2薄膜，并研究了铁、铬离子掺杂对TiO2光催化性能影响。对罗丹明B的光降解实验表明，适量的铁、铬离子掺杂均可提高TiO2薄膜的光催化活性，铁离子的掺杂效果明显高于铬离子，而铬离子的掺杂方式影响TiO2薄膜的光催化活性，这主要基于它们不同的掺杂机理。

Photocatalytic Activities of Iron and Chromium Ion Doped TiO2 Films

Iron ion and chromium ion doped TiO₂ films were prepared on the surface of glazed brick by the sol-gel process, and the effect of iron ion and chromium ion doping on photocatalytic activities of TiO₂ films was investigated. The results of photodecomposing Rhodamine B show that an appropriate doping amount of iron and chromium ion can improve the photocatalytic activities of TiO₂ films, however, the photocatalytic activities of iron ion doped samples are remarkably higher than those of chromium ion doped samples, while the doping ways of chromium ion affect the photocatalytic activities of TiO₂ films, because of their different doping mechanisms.