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双层金属有机框架材料M-ZIF-8@ZIF-67：从环境水样和黄瓜样品中吸附氟虫腈及其代谢物的能力和去除机制

Double layer MOFs M-ZIF-8@ZIF-67: The adsorption capacity and removal mechanism of fipronil and its metabolites from environmental water and cucumber samples.

作者信息

Li Tengfei, Lu Meng, Gao Yuhang, Huang Xiaodong, Liu Guangyang, Xu Donghui

机构信息

Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, China.

College of Life Sciences and Engineering, Hebei University of Engineering, Handan 056000, China.

出版信息

J Adv Res. 2020 Apr 5;24:159-166. doi: 10.1016/j.jare.2020.03.013. eCollection 2020 Jul.

DOI:10.1016/j.jare.2020.03.013
PMID:32337089
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7176987/
Abstract

In this study, a novel metal-organic framework (M-ZIF-8@ZIF-67) was successfully prepared using the single layer FeO-ZIF-8 as magnetic core and wrapped a layer of ZIF-67 outer. This M-ZIF-8@ZIF-67 was employed as an adsorbent for the adsorption and removal of fipronil and its metabolites from environmental water and cucumber samples. The characterization results suggested that M-ZIF-8@ZIF-67 has the double layer structure a polyhedral structure with uniform pores, while ZIF-67 was successfully coated on the surface of FeO-ZIF-8. The unique structure endowed M-ZIF-8@ZIF-67 a high surface area (219 m/g) and high adsorption capacity for fipronil, fipronil desulfinyl, fipronil sulfide and fipronil sulfone. To our knowledge, this is the first report detailing the adsorption properties of M-ZIF-8@ZIF-67 with double layer structure relating to the adsorption and removal of pesticides. Furthermore, the adsorption model analysis demonstrated that the static adsorption data fitted the Freundlich bimolecular layer adsorption model better than the Langmuir monolayer adsorption model. This study indicates that M-ZIF-8@ZIF-67 has significant potential in the adsorption and removal of fipronil and its metabolites in water and vegetable samples.

摘要

在本研究中，以单层FeO-ZIF-8为磁核，成功制备了一种新型金属有机框架材料（M-ZIF-8@ZIF-67），并在其外层包裹了一层ZIF-67。将该M-ZIF-8@ZIF-67用作吸附剂，用于从环境水样和黄瓜样品中吸附和去除氟虫腈及其代谢物。表征结果表明，M-ZIF-8@ZIF-67具有双层结构，即具有均匀孔隙的多面体结构，同时ZIF-67成功包覆在FeO-ZIF-8表面。这种独特的结构赋予了M-ZIF-8@ZIF-67较高的比表面积（219 m²/g）以及对氟虫腈、氟虫腈亚砜、氟虫腈砜和氟虫腈砜的高吸附容量。据我们所知，这是第一份详细报道具有双层结构的M-ZIF-8@ZIF-67对农药吸附和去除性能的报告。此外，吸附模型分析表明，静态吸附数据拟合Freundlich双分子层吸附模型比Langmuir单分子层吸附模型更好。本研究表明，M-ZIF-8@ZIF-67在吸附和去除水和蔬菜样品中的氟虫腈及其代谢物方面具有巨大潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/351a9086d089/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/dfcb7c636246/ga1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/cf378debc0fc/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/400b18180fce/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/0e08dc0b35b1/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/1fc29048609c/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/eaf483ef95e8/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/351a9086d089/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/dfcb7c636246/ga1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/cf378debc0fc/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/400b18180fce/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/0e08dc0b35b1/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/1fc29048609c/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/eaf483ef95e8/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1cd8/7176987/351a9086d089/gr6.jpg

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