文献类型：期刊文献

英文题名：Fe3O4 Magnetic Cores Coated with Metal-Organic Framework Shells as Collectable Composite Nanoparticle Vehicles for Sustained Release of the Pesticide Imidacloprid

作者：Meng, Wenyan[1,2];Gao, Yiyun[2];Tian, Zhenfen[2];Xu, Weijie[3];Cheng, Jiagao[4];Li, Shengke[3];Zou, Aihua[1,2]

机构：[1]Shanghai Normal Univ, Coll Chem & Mat Sci, Shanghai 200234, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China;[4]East China Univ Sci & Technol, Sch Pharm, Shanghai 200237, Peoples R China

年份：2021

卷号：4

期号：6

起止页码：5864

外文期刊名：ACS APPLIED NANO MATERIALS

收录：;EI(收录号：20212610566946);WOS:【SCI-EXPANDED(收录号:WOS:000668366800028)】；

基金：This work was financially supported by the National Natural Science Foundation of China (no. 21872051) and the National Key Research and Development Plan (no. 2017YFD0200306).

语种：英文

外文关键词：metal-organic framework; nanocomposite; pesticide delivery; magnetic collection; imidacloprid

摘要：A magnetic metal-organic framework nanocomposite as a collectable pesticide delivery vehicle was developed through the incorporation of UiO-66 with polydopamine-coated Fe3O4 (Fe3O4@PDA@UiO-66). The obtained Fe3O4 @PDA@UiO-66 nanocomposite was verified by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and zeta potential test. The magnetic collectability of Fe3O4@PDA@UiO-66 was demonstrated through a magnetic hysteresis loop study (similar to 2 emu/g) and magnetic collection experiment (up to a 96% collection rate). Imidacloprid (IMI) was employed as a model pesticide to be loaded into the Fe3O4@PDA@UiO-66 nanocomposite, with 15.87% drug loading. IMI was found to exhibit sustained-release behavior after being loaded into the delivery vehicle, and magnetic Fe3O4@PDA@UiO-66 can be readily collected after IMI release, which is beneficial to constrain the hazardous effects of the vehicles and the residual pesticide on the ecosystem. The insecticidal activity of IMI@Fe3O4@PDA@UiO-66 toward Aphis craccivora Koch was found to be superior to that of free IMI, and the efficacy was comparable to that of the commercial 70% IMI water dispersible granule, indicating its potential as a magnetic collectable green carrier for pesticides in agriculture.