Ionic liquid-modified magnetic nanoparticle composite for the selective adsorption of chromium ions in water

IF 1.1 4区材料科学 Q3 Engineering

Materials Science-Poland Pub Date : 2024-09-01 DOI:10.2478/msp-2024-0037

Hong Jin, Sufang Zhou, Xueqing Wu

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引用次数: 0

Abstract

Abstract Adsorption methods are widely used in the removal of heavy metals from aquatic environments, and adsorbents are crucial for adsorption efficiency. In this study, a magnetic nanoparticle composite material, Fe 3 O 4 @PEG@IL, modified with an imidazole-based ionic liquid [C n MI m ]HCO 3 ( n = 2, 4, 6, 8) was used as an adsorbent to adsorb the heavy metal chromium (Cr( vi )) in aquatic environments, and the adsorption conditions were optimized. Moreover, the selective adsorption of Cr( vi ) by the adsorbent was explored. The results show that when the pH value of the aqueous solution was 3.0, the solution temperature was 65℃, the amount of Fe 3 O 4 @PEG@IL added was 25 mg, and the time of adsorption reaction was 2.5 h, a good adsorption effect would be achieved, with an adsorption rate of 99.5%. Meanwhile, Fe 3 O 4 @PEG@IL had high adsorption selectivity for Cr( vi ), and heavy metal cations, such as Pb 2+ , Hg 2+ , Cd 2+ , and Cu 2+ , did not interfere with the adsorption of Cr( vi ). Moreover, the adsorbent was easy to recover and had good reusability.

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离子液体修饰磁性纳米颗粒复合材料对水中铬离子的选择性吸附

摘要吸附法广泛应用于水生环境中重金属的去除，而吸附剂是影响吸附效率的关键。本研究以咪唑基离子液体[C n MI m] hco3 （n = 2,4,6,8）改性的磁性纳米颗粒复合材料Fe 3 O 4 @PEG@IL为吸附剂，吸附水中重金属铬（Cr(vi)），并对吸附条件进行了优化。此外，还探讨了吸附剂对Cr（vi）的选择性吸附。结果表明，当水溶液pH = 3.0，溶液温度为65℃，fe3o4 @PEG@IL加入量为25 mg，吸附反应时间为2.5 h时，吸附效果良好，吸附率为99.5%。同时，fe3o4 @PEG@IL对Cr（vi）具有较高的吸附选择性，Pb 2+、Hg 2+、Cd 2+、Cu 2+等重金属阳离子对Cr（vi）的吸附不产生干扰。该吸附剂易于回收，具有良好的重复使用性能。

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来源期刊

Materials Science-Poland 工程技术-材料科学：综合

CiteScore

1.70

自引率

18.20%

发文量

审稿时长

6.2 months

期刊介绍： Material Sciences-Poland is an interdisciplinary journal devoted to experimental research into results on the relationships between structure, processing, properties, technology, and uses of materials. Original research articles and review can be only submitted.