纳米TiO2作为一种功能性半导体材料,在环境保护、光电转换、涂料行业和工业催化等领域有着极为广泛的用途.然而,光谱吸收范围窄、对太阳光的利用率低以及光量子效率低是限制TiO2实际应用的主要原因.掺杂改性可以拓宽光谱响应范围和提高量子效率,是提高光催化剂活性的重要方法.介绍了掺杂前后TiO2的催化原理,综述了稀土元素单一掺杂、稀土元素与其他元素共掺杂TiO2光催化剂的研究进展,并进一步指出了稀土掺杂TiO2中存在的问题和未来的研究方向.
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