Magnetic Adsorbent Based on Faujasite Zeolite Decorated with Magnesium Ferrite Nanoparticles for Metal Ion Removal

IF 2.6 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Magnetochemistry Pub Date : 2023-05-20 DOI:10.3390/magnetochemistry9050136

M. R. Meirelles, J. Malafatti, M. Escote, A. H. Pinto, E. Paris

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引用次数: 2

Abstract

Magnetic nanoparticles are a promising alternative as a support in adsorption processes, aiming at the easy recovery of the aqueous medium. A faujasite zeolite (FAU) surface was decorated with magnesium ferrite (MgFe2O4) nanoparticles. FAU is a porous adsorbent with high specific surface area (SSA) and chemical stability. The FAU:MgFe2O4 nanocomposite 3:1 ratio (w w−1) promotes the combination of the surface and magnetic properties. The results showed the effectiveness of the MgFe2O4 immobilization on the FAU surface, exhibiting a high SSA of 400 m2 g−1. The saturation magnetization (Ms) was verified as 5.9 emu g−1 for MgFe2O4 and 0.47 emu g−1 for FAU:MgFe2O4, an environmentally friendly system with soft magnetic characteristics. The magnetic nanocomposite achieved high adsorption values of around 94% removal for Co2+ and Mn2+ ions. Regarding its reuse, the nanocomposite preserved adsorption activity of above 65% until the third cycle. Thus, the FAU:MgFe2O4 nanocomposite presented favorable adsorptive, magnetic, and recovery properties for reuse cycles in polluted water.

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铁酸镁纳米粒子修饰Faujasite沸石的磁性吸附剂去除金属离子

磁性纳米颗粒是一种很有前途的吸附载体，其目的是使水介质易于回收。采用镁铁氧体(MgFe2O4)纳米颗粒修饰faujasite沸石(FAU)表面。FAU是一种具有高比表面积和化学稳定性的多孔吸附剂。FAU:MgFe2O4纳米复合材料3:1的比例(w w−1)促进了表面性能和磁性能的结合。结果表明，MgFe2O4在FAU表面的固定是有效的，表现出400 m2 g−1的高SSA。结果表明，MgFe2O4和FAU:MgFe2O4的饱和磁化强度分别为5.9 emu g−1和0.47 emu g−1，是一种具有软磁特性的环境友好型体系。磁性纳米复合材料对Co2+和Mn2+离子的去除率高达94%左右。在重复使用方面，纳米复合材料在第三次循环中仍保持65%以上的吸附活性。因此，FAU:MgFe2O4纳米复合材料具有良好的吸附、磁性和回收性能，可用于污水的回用循环。

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来源期刊

Magnetochemistry Chemistry-Chemistry (miscellaneous)

CiteScore

3.90

自引率

11.10%

发文量

145

审稿时长

11 weeks

期刊介绍： Magnetochemistry (ISSN 2312-7481) is a unique international, scientific open access journal on molecular magnetism, the relationship between chemical structure and magnetism and magnetic materials. Magnetochemistry publishes research articles, short communications and reviews. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.