介绍了TiO₂多相光催化降解有机污染物影响因素的最新研究进展，及pH、外加剂等对TiO₂多相光催化降解的影响。在高pH溶液中，能产生较多的·OH，即使TiO₂和污染物静电引力较弱，仍可能具有较强的光催化降解性能。特别指出，TiO₂多相光催化技术不适合处理浓度较大的有机废水，但对浓度低、毒性强的新兴污染物处理呈现良好的应用前景。

This paper introduces the latest research progress on the factors affecting the heterogeneous photocatalytic degradation of organic pollutants over TiO₂ and the effects of pH,additives and other factors on the heterogeneous photocatalytic degradation over TiO₂.More ·OH can be generated in a solution with a higher pH,therefore the catalyst will exhibit stronger photocatalytic degradation performance even if the electrostatic attraction between TiO₂ and pollutants is weaker.Particularly,the TiO₂ heterogeneous photocatalytic technology is not suitable for treating with high concentration organic wastewater,but has potential development in treatment of emerging contaminants with low concentration and high toxicity.

万燕(1992-),女,硕士生