期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 264, 期 -, 页码 34-41出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2013.10.060
关键词
Methyl parathion; Molecularly imprinted polymers; Superparamagnetic; Layer-by-layer self-assembly; Soil samples
资金
- NSFC-GD Joint Foundation of the Key Projects [U1201234]
- National Natural Science Foundation of China [21275057]
Core-shell magnetic methyl parathion (MP) imprinted polymers (Fe3O4@MPIPs) were fabricated by a layer-by-layer self-assembly process. In order to take full advantage of the synergistic effect of hydrogen-binding interactions and pi-pi accumulation between host and guest for molecular recognition, methacrylic acid and 4-vinyl pyridine were chosen as co-functional monomers and their optimal proportion were investigated. The core-shell and crystalline structure, morphology and magnetic properties of Fe3O4@MPIPs were characterized. The MP-imprinted nanoshell was almost uniform and about 100 nm thick. Binding experiments demonstrated that Fe3O4@MPIPs possessed excellent binding properties, including high adsorption capacity and specific recognition, as well as fast adsorption kinetics and a fast phase separation rate. The equilibration adsorption capacity reached up to 9.1 mg/g, which was 12 times higher than that of magnetic non-imprinted polymers, while adsorption reached equilibrium within 5 min at a concentration of 0.2 mmol/L. Furthermore, Fe3O4@MPIPs successfully provided selective separation and removal of MP in soils with a recovery and detection limit of 81.1-87.0% and 5.2 ng/g, respectively. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据