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摘要由于光催化技术的效率高、节约能源、工艺简单、不产生二次污染等优点，因而在开发新能源和环境污染治理等方面具有广阔的应用前景。而二氧化钛光催化剂更是具有无毒、光催化性能强的优点。因此，在参考了大量文献的基础上，本文中主要研究二氧化钛光催化剂，其中涉及到二氧化钛光催化剂在国内外的研究进展、最高效先进的改性方法、国内外优秀的催化剂制备方法、全球对于改性二氧化钛光催化剂的应用及其催化活性对比研究。在查阅大量文献的基础上以溶胶-凝胶法制备稀土元素Nd掺杂改性纳米二氧化钛，并对其性能表征，并测试其光催化活性。43683
毕业论文关键词：二氧化钛；光催化；稀土元素；掺杂
Abstract
Due to the advantages of high efficiency, energy saving, simple process, no pollution, etc., the photocatalytic technology has broad application prospects in the development of new energy and environmental pollution control and so on. The titanium dioxide photocatalyst has the advantages of no toxicity and high photocatalytic performance. Therefore, the reference based on a large amount of literature, this paper mainly study the TiO2 photocatalyst, which relates to preparation methods of TiO2 photocatalyst in the domestic and foreign research progress, the most advanced and efficient modified method, the domestic and foreign excellent catalyst system and global for the comparative study of the titanium dioxide catalyst application and photocatalytic properties of titania.On the basis of consulting a large number of literatures, the rare earth element Nd doped modified nano titanium dioxide was prepared by sol gel method, and its properties were characterized and tested for its photocatalytic activity.
KeyWords：TiO2;Photocatalytic；rare earth element；doping
目录
1 TiO2光催化剂国内外研究进展 1
1.1 引言 1
1.2 TiO2光催化机理 1
1.3 TiO2基半导体催化剂的研究进展 2
2 TiO2光催化剂改性方法进展 4
2.1 金属离子的掺杂 4
2.2 非金属元素掺杂 4
2.2.1 氮的掺杂 5
2.2.2 碳的掺杂 5
2.2.3 氟的掺杂 5
2.2.4 硫的掺杂 5
2.3 稀土元属掺杂 6
2.4 贵金属沉积 6
2.5 半导体复合 6
2.6 染料光敏化 7
3 改性TiO2光催化剂的制备方法 8
3.1 溶胶凝胶法 8
3.2 水热法（溶剂热法） 9
3.3 液相沉积法 9
3.4 气相沉积法 10
3.5 微乳液法 10
3.6 电化学阳极氧化法 11
4 改性TiO2光催化剂的应用进展 12
4.1 光解水制氢 12
4.2 空气的净化 12
4.3 水体净化