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标题：A microwave assisted method to synthesize nanoCoFe 2O 4@methyl cellulose as a novel metal-organic framework for antibiotic degradation
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作者：Alireza Nasiri ; Fatemeh Tamaddon ; Mohammad Hossein Mosslemin 等
期刊名称：MethodsX
印刷版ISSN：2215-0161
电子版ISSN：2215-0161
出版年度：2019
卷号：6
页码：1557-1563
DOI：10.1016/j.mex.2019.06.017
语种：English
出版社：Elsevier
摘要：Graphical abstractMechanism for photodegradation of MNZ by [email protected] OmittedAbstractIn this research, magnetically separable nanoCoFe2O4@methyl cellulose (MC) as a novel metal-organic framework was designed by a facile, fast, and new microwave-assisted method and then characterized. To assay the photocatalytic activity of nanoCoFe2O4@MC, its ability in metronidazole (MNZ) removal was investigated by considering the effect of some variables such as initial MNZ concentrations (5–20 mg/L), pH (3–11), nanophotocatalyst loading (0.0–0.4 g), and reaction time (15–120 min). The kinetic performance of the process was assessed by thepseudo-first order andLangmuir-Hinshelwoodmodels. The concentration of MNZ was determined by high performance liquid chromatography. The optimal conditions for the maximum MNZ removal efficiency (85.3%) included pH of 11, MNZ concentration of 5 mg/L, photocatalyst loading of 0.2 g, and irradiation time of 120 min. Moreover, the reusability and chemical stability of nanoCoFe2O4@MC were studied. MNZ was successfully degraded at a rate of 77.58% in the fourth run.Advantages of this technique were as follows:•A facile, fast, and new microwave-assisted method was developed to synthesize nanoCoFe2O4@MC as a new nanobiomagnetic photocatalyst.•Pure-phase spinel ferrites, spherical particle morphology with smaller agglomeration, and ferromagnetic nature of nanoCoFe2O4@MC were confirmed.•NanoCoFe2O4@MC displayed a significant photocatalytic activity in the photocatalytic degradation of MNZ; moreover, it was easily separated by a magnet and exhibited good chemical stability.
关键词：CoFe2O4@methyl cellulose;Nanobiomagnetic photocatalyst;Microwave;Metronidazole;Water treatment, Photocatalytic degradation