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.
ACS Appl Mater Interfaces. 2017 Jan 25;9(3):2959-2965. doi: 10.1021/acsami.6b13643. Epub 2017 Jan 11.
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 FeO nanoparticles (FeO NPs) 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.
一种通过在表面改性的 FeO 纳米颗粒 (FeO NPs) 上接枝共价有机骨架 (COF，TpPa-1) 来制备新型花束状磁性多孔纳米复合材料的简便策略被报道。这种磁性 TpPa-1（由 1,3,5-均苯三甲醛（Tp）和对苯二胺（Pa-1）合成的 COF）包含核壳型磁性纳米颗粒簇和相互连接的多孔 TpPa-1 纳米纤维。因此，它具有更大的比表面积、更高的孔隙率和超顺磁性，使其成为富集痕量分析物的理想吸附剂。其性能通过磁固相萃取 (MSPE) 从环境样品中萃取痕量多环芳烃 (PAHs) 后进行高效液相色谱分析进行了评估。结果表明，这种磁性 TpPa-1 对这类有机化合物具有优异的富集能力。
