对TiO2光催化剂进行改性,实现可见光催化活性是第二代光催化剂走向实用化的关键.氮掺杂TiO2是一种理想的具有可见光活性的光催化剂,由于N 2p态与O 2p态杂化,实现带隙窄化和吸收带边红移,对于实现可见光催化活性具有重要意义.评述了氮掺杂改性TiO2光催化剂的国内外研究现状,分析了不同掺杂方法对于实现TiO2可见光催化活性的掺杂机理和改性机理,提出研究合适的催化剂载体对TiO2进行氮等非金属负载是今后努力的方向,并且应该建立统一的催化剂性能评价标准.
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