Journal
NEW JOURNAL OF CHEMISTRY
Volume 43, Issue 20, Pages 7770-7777Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nj01324e
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Funding
- National Key R&D Program of China [2018YFC1602401]
- National Natural Science Foundation of China [21806083]
- Fundamental Research Funds for the Central Universities, Nankai University [63191429]
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A novel magnetic nanocomposite named Fe3O4@UiO-66-SO3H with a core-shell structure was first synthesized via a feasible step-by-step assembly strategy, and then employed as an adsorbent to remove methylene blue (MB) from aqueous solution. The characterization by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and Fourier transform infrared (FT-IR) spectroscopy proved that the Fe3O4@UiO-66-SO3H core-shell nanocomposite was successfully prepared. And the as-synthesized Fe3O4@UiO-66-SO3H had a strong affinity towards MB and the maximum adsorption capacity was 297.3 mg g(-1). The adsorption of MB could be basically completed within 15 min. The kinetic and isotherm studies indicated that adsorption data could be well fitted to the pseudo-second-order model and Langmuir model. Significantly, Fe3O4@UiO-66-SO3H could selectively adsorb MB from a mixed solution due to the charge-selectivity effect and possessed good reusability. The electrostatic interaction and the - interaction were assumed to play a vital role in the adsorption process. All in all, the current study provided a promising sorbent for the efficient and selective removal of MB from dye-containing wastewater.
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