NiFe2O4-based magnetic covalent organic framework nanocomposites for the efficient adsorption of brominated flame retardants from water.

Bibliographic Details
Title: NiFe2O4-based magnetic covalent organic framework nanocomposites for the efficient adsorption of brominated flame retardants from water.
Authors: Wang, Xuemei, Ji, Hong, Wang, Fangbing, Cui, Xinglan, Liu, Yacong, Du, Xinzhen, Lu, Xiaoquan
Source: Microchimica Acta; May2021, Vol. 188 Issue 5, p1-10, 10p
Subject Terms: FIREPROOFING agents, SOLID phase extraction, VAN der Waals forces, CARBON nanotubes, NANOCOMPOSITE materials, MAGNETIC materials
Abstract: A new kind of NiFe2O4-based magnetic covalent organic framework nanocomposites (NiFe2O4@COFs) was fabricated through facile synthesis approach under room temperature. The NiFe2O4@COFs exhibited higher adsorption capacity for brominated flame retardants than carbon nanotube material based on hydrophobic interactions, π-π stacking interaction, and van der Waals forces. In addition, the adsorption isotherm and the kinetic model were more suitable for Langmuir and pseudo-second-order model, respectively. NiFe2O4-based magnetic covalent organic framework nanocomposites combined with HPLC-UV (absorption wavelength: 214 nm) technology has excellent adsorption performance, which exhibited low detection limits (0.03–1.9 μg L−1), wide linear range (0.11–1000 μg L−1), good recoveries (91.5–102%) with a relative standard deviation of less than 2.9%. Finally, the prepared magnetic material was successfully used asadsorbents of magnetic solid-phase extraction and applied to the determination of five BFRs from the real water samples. [ABSTRACT FROM AUTHOR]
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Database: Complementary Index
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ISSN:00263672
DOI:10.1007/s00604-021-04809-x
Published in:Microchimica Acta
Language:English