水流驱动的MoS_(2)/PVDF多孔膜降解水中四环素机理  

Degradation mechanism of tetracycline in water by MoS_(2)/PVDF porous membrane driven by water flow

作　　者：王玥璐[1] 海士坤[1] 韩佳骏 张锦晓 翟圆梦 WANG Yue-lu;HAI Shi-kun;HAN Jia-jun;ZHANG Jin-xiao;ZHAI Yuan-meng(Department of Public Discipline Teaching,Shangqiu Medical College,Henan 476000,China;School of Materials Engineering,Henan University of Engineering,Henan 450000,China)

机构地区：[1]商丘医学高等专科学校公共学科教学部,河南商丘476000 [2]河南工程学院材料工程学院,河南郑州450000

出　　处：《中国环境科学》2025年第2期795-802,共8页China Environmental Science

基　　金：科技厅科技攻关项目(222102320188);河南省高等学校重点科研项目计划(21A430008)。

摘　　要：以过氧单硫酸盐(PMS)为基础的高级氧化工艺(AOPs)中,高效活化和利用PMS是去除有机污染物的一个重要目标.因此,本研究将水流驱动的压电效应引入到PMS活化中,利用制备的MoS_(2)/PVDF膜作为压电催化膜,以去除水中的四环素(TC).结果表明,在60min内,MoS_(2)/PVDF膜对TC的降解效率为77.9%,反应速率常数为0.0231min^(-1),高于单独的MoS_(2)(0.0135min^(-1))和PVDF(0.0085min^(-1)).通过牺牲剂实验结合LC-MS探究TC降解过程的中间产物并分析反应机理.在循环实验中,MoS_(2)/PVDF膜表现出优异的可重用性和可回收性.上述结果表明,在水流的机械漩涡力作用下,MoS_(2)/PVDF膜可以触发压电电位并产生丰富的自由电子来激活PMS,从而产生各种活性物质来降解有机污染物.In advanced oxidation processes(AOPs)based on peroxymonosulfate(PMS),efficient activation and utilization of PMS was considered to be an important goal for the removal of organic pollutants.The piezoelectric effect driven by water flow was introduced into PMS activation in this study,using the prepared MoS_(2)/PVDF membrane as a piezoelectric membrane to remove tetracycline(TC)from water.The degradation efficiency of TC by MoS_(2)/PVDF membrane was 77.9%within 60min was showed in the results,with a reaction rate constant of 0.0231min^(-1),which was higher than that of MoS_(2)(0.0135min^(-1))and PVDF(0.0085min^(-1)).Sacrificial agent experiments combined with LC-MS were used to explore the intermediates of the TC degradation process and analyze the reaction mechanism.In cycling experiments,the excellent reusability and recyclability was exhibited in MoS_(2)/PVDF membranes.These results indicated that under the mechanical vortex force of water flow,MoS_(2)/PVDF membrane can trigger piezoelectric potential and generate abundant free electrons to activate PMS,thereby producing various active substances to degrade organic pollutants.

关 键 词：过氧单硫酸盐 压电效应 四环素 聚偏二氟乙烯 

分 类 号：X703.5[环境科学与工程—环境工程]