负载型二硒化铁催化单过硫酸盐降解多氯联苯的研究  

Research on degradation of polychlorinated biphenyls with monopersulfate catalyzed by supported FeSe_(2)

作　　者：南亚林 张鹏 范文燕 杨旭 王文科[2] 李斯文 NAN Ya-lin;ZHANG Peng;FAN Wen-yan;YANG Xu;WANG Wen-ke;LI Si-wen(Shaanxi Provincial Soil Engineering Technology Research Center,China Electronic Research Institute of Engineering Investigations and Design,Xi'an 710054,China;School of Water and Environment,Chang'an University,Xi'an 710061,China)

机构地区：[1]信息产业部电子综合勘察研究院,陕西省土体工程技术研究中心,陕西西安710054 [2]长安大学水利与环境学院,陕西西安710061

出　　处：《现代化工》2022年第10期190-195,共6页Modern Chemical Industry

基　　金：信息化电子勘探研究院院内项目(2020-DKY-W01);长安大学中央高校基本科研业务(300102290301)。

摘　　要：合成了2种多孔载体材料负载下的二硒化铁催化剂(FeSe_(2)@MOF-199和FeSe_(2)@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FeSe_(2)活性组分,使得FeSe_(2)@MOF-199/PMS体系对PCB 28的降解率高于FeSe_(2)@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,FeSe_(2)@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。FeSe_(2)@MOF-199 and FeSe_(2)@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 FeSe_(2)due to its larger specific surface area and pore size,which makes the degradation rate of PCB 28 in FeSe_(2)@MOF-199/PMS system higher than that in FeSe_(2)@MCM-41/PMS system.The degradation rate of PCB 28 by FeSe_(2)@MOF-199/PMS can reach 100%as the concentration of PMS is 1.0 mmol·L^(-1),pH=3,and the temperature is 20℃.FeSe_(2)@MOF-199/PMS can keep a higher degradation ability to PCB 28 after it has been reused for 5 times.

关 键 词：负载型二硒化铁催化剂 单过硫酸盐 多氯联苯 土壤修复 催化 

分 类 号：X703[环境科学与工程—环境工程]