负载型TiO_2降解含酚废水及其性能研究新进展

Progress of Using Immobilized TiO_2 Film for the Degradation of Phenol in Wastewater

半导体TiO2是一种新型的高效光催化剂,具有很强的氧化能力。在光照条件下可以氧化废水中的酚类化合物,但传统的悬浮型TiO2光催化剂催化效率低,难以回收。因此将其负载于一定的载体上是其实用化的关键。简单介绍了负载型TiO2光催化剂的研究进展。

TiO2 is one of the semiconductors which is a new and efficient photocatalyst.It exhibits considerable photocatalytic activity under UV or sunlight illumination.Phenol can be decomposed and mineralized by the proceeding oxidation and reduction processes on TiO2 surface,but one of the disadvantage by using TiO2 as a photocatalyst is its difficulty for sedimentation after photocatalytic process.So mouting of TiO2 films on some supports is very important.In rencent years,some research have been reported for the degradation of phenol in wastewater by using immobilized TiO2 film.