合成了2种多孔载体材料负载下的二硒化铁催化剂(FeSe₂@MOF-199和FeSe₂@MCM-41),并将其用于催化单过硫酸盐(PMS)以降解多氯联苯(PCB 28)。结果表明,MOF-199以其较大的比表面积及孔道尺寸,可负载更多的FeSe₂活性组分,使得FeSe₂@MOF-199/PMS体系对PCB 28的降解率高于FeSe₂@MCM-41/PMS。在PMS浓度为1.0 mmol/L、pH=3、温度为20℃的最佳反应条件下,FeSe₂@MOF-199/PMS对PCB 28的降解率可达到100%,且重复使用5次后仍保持较高的降解能力。

FeSe₂@MOF-199 and FeSe₂@MCM-41 are synthesized through loading ferric selenide catalysts by porous materials,and applied to the degradation of polychlorinated biphenyls (PCB 28) by monopersulfate (PMS).The results show that MOF-199 can load more active components of FeSe₂ due to its larger specific surface area and pore size,which makes the degradation rate of PCB 28 in FeSe₂@MOF-199/PMS system higher than that in FeSe₂@MCM-41/PMS system.The degradation rate of PCB 28 by FeSe₂@MOF-199/PMS can reach 100% as the concentration of PMS is 1.0 mmol·L^-1,pH=3,and the temperature is 20℃.FeSe₂@MOF-199/PMS can keep a higher degradation ability to PCB 28 after it has been reused for 5 times.

南亚林(1970-),男,硕士,正高级工程师,主要从事岩土工程与地质工程的生产及科研工作,nan.yalin@dky53.com