Abstract
Halloysite nanotubes (HNTs) were modified with Fe3O4 to form novel magnetic HNTs-Fe3O4 composites, and the composites were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), Fourier transform infrared spectroscopy (FT-IR) and vibrating sample magnetometer (VSM). The as-obtained results indicated that Fe3O4 nanoparticles were successfully installed on the surface of HNTs. The adsorption of UO 2+2 on HNTs-Fe3O4 was investigated as a function of solid content, contact time, pH, ionic strength and temperature by batch experiments. The consequences revealed that the adsorption of UO 2+2 onto HNTs-Fe3O4 was strongly dependent on pH and ionic strength. Equilibrium data fitted well with the Langmuir isotherm. The experimental results demonstrated that the adsorbents with HNTs-Fe3O4 had the largest adsorption capacity of 88.32 mg/g for UO 2+2 .
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He, W., Chen, Y., Zhang, W. et al. Removal of UO 2+2 from aqueous solution using halloysite nanotube-Fe3O4 composite. Korean J. Chem. Eng. 33, 170–177 (2016). https://doi.org/10.1007/s11814-015-0111-1
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DOI: https://doi.org/10.1007/s11814-015-0111-1