β-Cyclodextrin polymer were prepared by inverse-phase suspension polymerization using epichlorohydrin (EPI) as crosslinker. The architecture has been characterized by Fourier transform infrared spectra (FT-IR) and thermogravimetric analysis (TGA), which confirmed that cyclodextrin polymer have been synthesized successfully. β-Cyclodextrin polymer (EPI-CD) can interact with a variety of hydrophobic compounds to form inclusion complexes, such as phenol. Experimental results indicated that the adsorption reached to 58.51umol/g under the initial concentration of 120mg/L at 298K. The adsorption isotherm was fitted to the Langmuir and Freundlich models. From the experimental data, it may be inferred that EPI-CD polymer was an effective adsorbent for the removal of phenol in wastewater treatment.
β-cyclodextrin modified hybrid magnetic nanoparticles (Fe3O4@SiO2-h-PAMAM-CD) with a core-shell structure were prepared via the classic hyperbranched polyamidoamine synthesis method, the combination of Michael addition and aminolysis reaction, on the surfaces of silica coated iron oxide nanoparticles. The novel structure was confirmed by fourier transform infrared spectra (FT-IR), Transmission electron microscopy (TEM), and thermogravimetric analysis (TGA), and the superior magnetic property was maintained and helped the material to separation and recycling. Further more, Fe3O4@SiO2-h-PAMAM-CD demonstrated excellent recycling and adsorption capacity for small molecule phenol in the aqueous solution.
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