Abstract
In this study, a simple method was used to synthesize a new type of magnetic composite material BNNS@ Fe3O4. In the PVP aqueous solution, the h-BN surface was exfoliated by a high-pressure homogenizer to obtain a few layers of BNNS. Then FeCl3·6H2O and hydrazine hydrate were added for reduction treatment, and deposited Fe3O4 nanoparticles on the surface of BNNS. PVP can not only stabilize a few layers of BN, but also promote the formation of Fe3O4. Through SEM, TEM, XRD, XPS and other characterization methods, the composition and surface morphology of the composite material were determined. Furthermore, the adsorption of Congo red by the composite material was explored. The removal rate of Congo Red by composite of BNNS @ Fe3O4 (0.1) was 39% after 12 h reaction at 323 K. But adsorption capacity also increased with time, when the time was extended to 48 h, its maximum removal rate of Congo Red was 83% and the adsorption capacity was 499 mg/g at 313 K. The adsorption kinetics and thermodynamics of the composite material for Congo red at 313 K were studied. The adsorption process was more consistent with the pseudo-second-order kinetic equation. The composite nanoparticles can move directionally under the action of a magnetic field, which also has potential application value in thermal conductivity.
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Yang, J., Shang, J., Chen, J. et al. Preparation and characterization of boron nitride nanosheet ferric oxide composite (BNNS@Fe3O4) through the double stabilization of PVP and its adsorption to congo red. J Polym Res 28, 71 (2021). https://doi.org/10.1007/s10965-020-02396-8
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DOI: https://doi.org/10.1007/s10965-020-02396-8