Issue 20, 2019

Fabrication of Fe3O4@UiO-66-SO3H core–shell functional adsorbents for highly selective and efficient removal of organic dyes

Abstract

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 π–π 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.

Graphical abstract: Fabrication of Fe3O4@UiO-66-SO3H core–shell functional adsorbents for highly selective and efficient removal of organic dyes

Supplementary files

Article information

Article type
Paper
Submitted
15 Mar 2019
Accepted
23 Apr 2019
First published
24 Apr 2019

New J. Chem., 2019,43, 7770-7777

Fabrication of Fe3O4@UiO-66-SO3H core–shell functional adsorbents for highly selective and efficient removal of organic dyes

S. Lv, J. Liu, C. Li, H. Ma, Z. Wang, N. Zhao and S. Wang, New J. Chem., 2019, 43, 7770 DOI: 10.1039/C9NJ01324E

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