Ultrasound-assisted degradation of rhodamine B(RhB) organic dye onmagnetic ZnFe۲O۴-ZnS-ZSM-۵ nanocomposite catalyst from water media
Publish place: The 11th International Conference on New Strategies in Engineering, Information Science and Technology in the Next Century
Publish Year: 1400
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
EISTC11_024
تاریخ نمایه سازی: 16 آذر 1400
Abstract:
Magnetic ZnFe۲O۴-ZnS-ZSM-۵ zeolite nanocomposite was successfully fabricated using hydrothermal route. The gained nanocomposite was identified via Field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, Fourier-transform infrared spectroscopy, magnetic measurements, and Brunauere-Emmette-Teller. The outcomes affirmed the production of ZnFe۲O۴-ZnS-ZSM-۵ nanocomposite with the average crystallite size of ۱۴ nm. The aforementioned nanocomposite was utilized as a newly sonocatalyst for the degradation of rhodamine B (RhB) organic dye under ultrasound irradiation. The data revealed complete degradation of RhB (۲۵ mg/L) within ۱۲ min in the presence of ZnFe۲O۴-ZnS-ZSM-۵ nanocomposite and H۲O۲ (۴ mM). The trapping experiments demonstrated that •OH free radicals are the main active species in the degradation of RhB. Furthermore, sonocatalytic performance of the ZnFe۲O۴-ZnS-ZSM-۵ nanocomposite was higher than those of raw ZnFe۲O۴ and ZnS, illustrating that the combining ZnS with magnetic ZnFe۲O۴ could be a suitable choice to enhance its sonocatalytic performance. The nanocomposite could be magnetically separated and recycles without any observable change in its structure and activity even after four sequential cycles.
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Authors
Meysam Sadeghi
Department of Chemistry, Lorestan University, Khorramabad, Iran
Pourya Zarshenas
Faculty of Chemistry & Petroleum Sciences, Shahid Beheshti University (SBU), Iran
Maryam Gholami
Department of Chemistry, Lorestan University, Khorramabad, Iran