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Design and development of new preparation methods and catalytic activities of a magnetic ZrFe2O4 nanostructure

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Design and development of new preparation methods and catalytic activities of a magnetic ZrFe2O4 nanostructure

10$

Hamideh Balooch Khosravi, Rahmatollah Rahimi, Mahboubeh Rabbani & Ali Maleki 

Abstract

ZrFe2O4 magnetic nanoparticles (MNPs) were prepared via three different methods: solvothermal, microwave-assisted solvothermal, and combustion. Among them, the last two methods reduce the synthesis time from 48 h to 45 and 10 min, respectively. The structural studies of the compounds were done by XRD, FE-SEM, EDX, VSM, BET, TGA, and DRS that confirm and emphasize the particle size is in meso-range between 24 and 48 nm; the photocatalytic activity of the compound, for degradation of methylene blue, was also investigated by UV–visible spectroscopy at 664 nm. The best degradation took place with solvothermal processes (57%) for 90 min. Moreover, the obtained results were considerable for industrial fabrication aims. The oxidation reaction studies of cyclohexane in the presence of Zr ferrites as a catalyst prepared by the microwave-assisted solvothermal method (ZrFe2O4(Mic-Solv)) showed the highest catalytic activity. By loading of 0.374 mmol of ZrFe2O4(Mic-Solv), the turnover number was observed 5273, and total selectivity for cyclohexanone and cyclohexanol was observed 99.4% at 423 K after 135 min of reaction in the industrial microwave vessel. The advantage of the ZrFe2O4(Mic-Solv) compound as a catalyst in this work is the stability of the structure that makes it a prominent reusable catalyst with no activity reduction after six consecutive runs.

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Year 2020
Language English
Format PDF
DOI 10.1007/s13738-020-01881-7