Fe-based MOFs for efficient adsorption and degradation of acid orange 7 in aqueous solution via persulfate activation

Fe-based MOFs for efficient adsorption and degradation of acid orange 7 in aqueous solution via... Article history: Fe-based metal–organic frameworks (MOFs) including MIL-101(Fe), MIL-100(Fe), MIL-53(Fe), and MIL- Received 2 December 2015 88B(Fe) prepared via a facile solvothermal process were introduced as both adsorbents and catalysts to Received in revised form 19 January 2016 generate powerful radicals from persulfate for acid orange 7 (AO7) removal in aqueous solution. Various Accepted 5 February 2016 catalysts were described and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Available online 6 February 2016 scanning electron microscopy and X-ray photoelectron spectra. Because of the high specific surface area of the materials, we studied the adsorption isotherms of the four MILs by the fitting of Langmuir adsorption Keywords: isotherm. Meanwhile, the catalytic activities in persulfate oxidation system were investigated. The results Metal–organic frameworks showed that the sequence of the materials ability in the combination of adsorption and degradation was Catalyst MIL-101(Fe) > MIL-100(Fe) > MIL-53(Fe) > MIL-88B(Fe), which had a close connection with the activity of Adsorption metal ion in active site of the catalysts and their different cages in size. Moreover, the reactive species in Sulfate radicals Degradation MILs/persulfate system were identified as sulfate radicals and hydroxyl radicals. The reaction mechanism for persulfate activation over MILs was also studied. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Fe-based MOFs for efficient adsorption and degradation of acid orange 7 in aqueous solution via persulfate activation

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2016.02.037
Publisher site
See Article on Publisher Site

Abstract

Article history: Fe-based metal–organic frameworks (MOFs) including MIL-101(Fe), MIL-100(Fe), MIL-53(Fe), and MIL- Received 2 December 2015 88B(Fe) prepared via a facile solvothermal process were introduced as both adsorbents and catalysts to Received in revised form 19 January 2016 generate powerful radicals from persulfate for acid orange 7 (AO7) removal in aqueous solution. Various Accepted 5 February 2016 catalysts were described and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Available online 6 February 2016 scanning electron microscopy and X-ray photoelectron spectra. Because of the high specific surface area of the materials, we studied the adsorption isotherms of the four MILs by the fitting of Langmuir adsorption Keywords: isotherm. Meanwhile, the catalytic activities in persulfate oxidation system were investigated. The results Metal–organic frameworks showed that the sequence of the materials ability in the combination of adsorption and degradation was Catalyst MIL-101(Fe) > MIL-100(Fe) > MIL-53(Fe) > MIL-88B(Fe), which had a close connection with the activity of Adsorption metal ion in active site of the catalysts and their different cages in size. Moreover, the reactive species in Sulfate radicals Degradation MILs/persulfate system were identified as sulfate radicals and hydroxyl radicals. The reaction mechanism for persulfate activation over MILs was also studied.

Journal

Applied Surface ScienceElsevier

Published: Apr 30, 2016

References

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