Single-stage solution combustion preparation of ZnFe<sub>۲</sub>O<sub>۴</sub>-ZnS nanoparticles as dye adsorbent: Effect of fuel to oxidant and Zn to Fe molar ratios
Publish place: Journal of Particle Science & Technology، Vol: 6، Issue: 2
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JPST-6-2_006
تاریخ نمایه سازی: 2 دی 1400
Abstract:
ZnFe۲O۴-ZnS adsorbent was synthesized by the single-stage solution combustion procedure applying the thiourea at different fuel to oxidant ratios (ϕ = ۱, ۱.۲, ۱.۴, and ۱.۶), and different Zn to Fe molar ratios (Zn : Fe = ۰.۵, ۰.۶, ۰.۷, and ۰.۸). The efficiency of the removal of methyl orange dye by synthesized powders in various conditions was investigated. The best sample, in terms of dye removal, was the synthesized powder at Zn : Fe = ۰.۶ and ϕ = ۱.۴. Dye removal was discovered to be extremely pH-dependent. The highest dye removal was observed to be about ۹۴% of methyl orange, which disappears after ۲۰ min in a dark environment. Kinetics investigations were carried out to discover the mechanism of methyl orange elimination and its adsorption rate kinetics. It was found that the elimination of methyl orange by ZnFe۲O۴-ZnS powders follows a pseudo second-order adsorption kinetics model.
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Authors
Masoud Rafigh Esmaeilzaei
Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, Iran
Hamideh Saravani
Department of Chemistry, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, Iran
Ahmad Reza Abbasian
Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran
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