吸附
静电纺丝
膜
复合数
化学工程
抗菌活性
化学
朗缪尔吸附模型
纳米纤维
核化学
过滤(数学)
材料科学
色谱法
复合材料
有机化学
细菌
聚合物
生物化学
生物
统计
工程类
遗传学
数学
作者
Hao Zhang,Jing Wang,Yakun Teng,Shushu Jia,Hui Huang,Yongxin Li,Ce Wang
标识
DOI:10.1016/j.cej.2023.142195
摘要
2,4-dichlorophenoxyacetic acid (2,4-D) is one of the most widely used herbicides with strong environmental toxicity, and it is necessary to be removed from water. However, some traditional adsorbents may be contaminated by bacteria during the removal process, which will affect the adsorption performance. Therefore, a novel adsorbent ([email protected]) with antibacterial properties was developed for the removal of 2,4-D. The adsorbent is prepared by in-situ growth of Ce-based MOF with UiO-66 structure on the surface of electrospun nanofibers by solvothermal method. The results of static adsorption experiments show that the composite fibrous membrane has a good removal effect on 2,4-D. The adsorption process is more consistent with the pseudo-second-order model and Langmuir model. The theoretical maximum adsorption capacity is 200.80 mg/g. The dynamic filtration experiment also shows a removal rate of 90.3% within 6 min (the membrane thickness is 0.12 mm). And most importantly, the haloperoxidase activity of Ce-MOF could endows fibrous membrane with excellent antibacterial properties, and the bacteriostatic rate of Escherichia coli is 92.91%. This study provides an innovative idea for the development of adsorbents/membranes with organic contaminant removal and antibacterial capabilities.
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