title: Facile Synthesis of Magnetic Covalent Organic Framework with Three-Dimensional Bouquet-Like Structure for Enhanced Extraction of Organic Targets.
abstract: A facile strategy for the fabrication of novel bouquet-shaped magnetic porous nanocomposite via grafting a covalent organic framework (COF, TpPa-1) onto the surface-modified Fe3O4nanoparticles (Fe3O4NPs) was reported. The magnetic TpPa-1 (a COF synthesized from 1,3,5-triformylphloroglucinol (Tp) and p-phenylenediamine (Pa-1)) contains clusters of core-shell magnetic nanoparticles and interconnected porous TpPa-1 nanofibers. Thus, it possesses larger specific surface area, higher porosity, and supermagnetism, making it an ideal sorbent for enrichment of trace analytes. Its performance was evaluated by the magnetic solid-phase extraction (MSPE) of trace polycyclic aromatic hydrocarbons (PAHs) from environmental samples prior to high-performance liquid chromatographic analysis. The results indicated that the magnetic TpPa-1 possessed superior enrichment capacity of such organic compounds.
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China.|University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Sijing
authors.identifier: http://orcid.org/0000-0001-9279-9267
authors.initials: S
authors.lastname: He
authors.affiliation: College of Environment, Zhejiang University of Technology , Hangzhou 310032, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Zeng
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China.|University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Saihua
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China.
authors.forename: Hongyun
authors.initials: H
authors.lastname: Niu
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085, China.|University of Chinese Academy of Sciences , Beijing 100049, China.|Institute of Environment and Health, Jianghan University , Wuhan 430056, China.
authors.forename: Yaqi
authors.initials: Y
authors.lastname: Cai
keywords: bouquet-like structure; environmental water samples; magnetic covalent organic framework; polycyclic aromatic hydrocarbons; solid-phase extraction