PAN纳米纤维毡负载TiO_2处理废水中苯酚

Photocatalysis of TiO_2 Doped in Electrospun Polyacrylonitrile Nanofiber Mats

采用具有光催化活性的TiO2/PAN纳米纤维毡处理模拟废水中的苯酚。结果表明:纺丝液浓度聚丙烯腈(PAN)质量分数为5%的TiO2/PAN纤维毡对苯酚的降解率最高,对浓度100、50、20和10 mg/L苯酚的降解率分别为51.1%、87.5%、99.6%和100.0%。光催化反应符合一级反应动力学。纤维毡循环使用5次后对于浓度20 mg/L苯酚的降解率保持在87.4%。

This study aimed to conduct photocatalytic degradation of phenol in simulation wastewater with nano titanium dioxide （TiO2 ） embedded in PAN nanofiber mats which were frabricated by electrospinning method. The result shows that the 5% TiO2/PAN nanofiber mat had the highest efficiency in phenol degradation, and the efficiency of the photocatalytic degradation of phenol were 51.1%, 87.5% ,99.6% and 100% , respectively for phenol concentration 100, 50, 20 and 10 mg/L and the photocatalysis reaction can be expressed as first-order kinetics. At 20 mg/L phenol concentration, the mat still kept its degradation efficiency of phenol 87.4% after 5 times reused.