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中文摘要：
TiO2作为一种重要的光催化剂，对其进行掺杂改性可有效扩展其光谱响应范围，提高其光催化活性。介绍了稀土元素与N对TiO2进行共掺杂改性的机理及研究现状，分析了共掺杂对TiO2晶体结构、电子结构以及光学性能、氧化还原性能的影响，总结了稀土元素与N共掺杂改性TiO2存在的问题以及今后的研究前景。
英文摘要：
Titanium dioxide is a very important photocatalyst. By means of ion doping, the optical absorption range and photocatalytic activity can be improved effectively. The modified mechanism of TiO2 co-doped with rare earth and N ions was introduced, and the effects of ions doping on the crystal and electrical structure were analyzed. The problems and the development prospects of TiO2 co-doped with rare earth and N ions were also summarized.
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