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Issue 21, 2017, Issue in Progress
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Rapid degradation of azo-dye using Mn–Al powders produced by ball-milling

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Abstract

This study was conducted on the reduction reaction of the azo dye Reactive Black 5 by means of the Mn85Al15 particles prepared by melt-spinning and ball-milling processes. The morphology, the surface elementary composition and the phase structure of the powders were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. The degradation efficiency of the ball milled powder was measured by using an ultraviolet-visible absorption spectrophotometer and the collected powder was analyzed by means of Fourier transform infrared spectroscopy technique to characterize the functional groups in the extract. The degradation of Reactive Black 5 and the analysis of the aromatic by-products were investigated by high performance liquid chromatography coupled with tandem mass spectrometry. The ball-milled powder shows higher degradation efficiency and the Reactive Black 5 solution was completely decolorized after 30 min. The degradation kinetics and the formation by-products depend on the pH and temperature of the solution. The analyses of the extracted product confirmed the cleavage of the (–N[double bond, length as m-dash]N–) bonds. Our findings are expected to pave the way for a new opportunity with regard to the functional applications of nanostructured metallic particles.

Graphical abstract: Rapid degradation of azo-dye using Mn–Al powders produced by ball-milling

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Publication details

The article was received on 22 Dec 2016, accepted on 16 Feb 2017 and first published on 22 Feb 2017


Article type: Paper
DOI: 10.1039/C6RA28578C
Citation: RSC Adv., 2017,7, 12620-12628
  • Open access: Creative Commons BY-NC license
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    Rapid degradation of azo-dye using Mn–Al powders produced by ball-milling

    W. Ben Mbarek, M. Azabou, E. Pineda, N. Fiol, L. Escoda, J. J. Suñol and M. Khitouni, RSC Adv., 2017, 7, 12620
    DOI: 10.1039/C6RA28578C

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