MgFe2O4 and MgFe2O4/ZnFe2O4 coated with polyaniline as a magnetically separable photocatalyst for removal of a two dye mixture in aqueous solution

In this work MgFe 2 O 4 and MgFe 2 O 4 /ZnFe 2 O 4 coated with polyaniline (PANI) as an efficient magnetically separable photocatalyst were synthesized. The prepared samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, BET analysis, field emission scanning electr...

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Bibliographic Details
Published in:Research on chemical intermediates 2017-08, Vol.43 (8), p.4459-4474
Main Authors: Arshadnia, Iliya, Movahedi, Maryam, Rasouli, Nahid
Format: Article
Language:English
Subjects:
Adsorption
Aqueous solutions
Catalysis
Catalytic activity
Chemistry
Chemistry and Materials Science
Dyes
Emission analysis
Energy dispersive X ray analysis
Field emission microscopy
Fourier analysis
Fourier transforms
Infrared analysis
Infrared spectroscopy
Inorganic Chemistry
Kinetics
Methylene blue
Photocatalysis
Physical Chemistry
Polyanilines
Scanning electron microscopy
Spectroscopic analysis
X ray analysis
X-ray diffraction
Zinc ferrites
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Summary:In this work MgFe 2 O 4 and MgFe 2 O 4 /ZnFe 2 O 4 coated with polyaniline (PANI) as an efficient magnetically separable photocatalyst were synthesized. The prepared samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, BET analysis, field emission scanning electron microscopy and energy dispersive X-ray analysis. The adsorption and photocatalytic activity of the samples for removal of a two dye mixture of methylene blue and methyl orange in aqueous solution were examined. The results indicate that the MgFe 2 O 4 /PANI sample is a promising candidate for effective photodecolorization of both methylene blue and methyl orange dyes in aqueous solution. For the MgFe 2 O 4 /ZnFe 2 O 4 /PANI sample, a large amount of the removal of the methylene blue via adsorption and photocatalytic experiments was observed. The prepared samples demonstrated the high removal ability after five repeated utilizations. The pseudo-first and pseudo-second order kinetic models were used to describe the adsorption kinetic data. It was observed that the pseudo-second order kinetic model described the adsorption process better than pseudo-first order.
ISSN:0922-6168
1568-5675
DOI:10.1007/s11164-017-2889-4