化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (6) : 196-202.

科学研究

原位合成CuFe₂O₄/Cu-金属有机框架及其对萘的吸附机理和性能研究

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In-situ synthesis of CuFe₂O₄/Cu-MOF and its adsorption mechanism and property for naphthalene

Guo Chenglong¹, Xie Haimei¹, Zhang Yong², Deng Shuangshuang¹, Peng Fumin¹

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Received		Published
2019-01-29		2020-06-20
Issue Date	Revised Date
2020-07-02	2019-01-29

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摘要

采用溶剂热法原位合成CuFe₂O₄/Cu-金属有机框架(CuFe₂O₄/HKUST-1)。首先通过溶剂热法合成CuFe₂O₄,生成的CuFe₂O₄在加热的过程中会释放出Cu²⁺,释放出的Cu²⁺和有机配体结合进行原位生长形成HKUST-1,最终得到CuFe₂O₄/HKUST-1复合物。用合成的复合物样品对水溶液中的多元环芳烃-萘进行吸附测试,在吸附过程中CuFe₂O₄不但提供吸附活性位点,而且因其良好的磁性,在外部磁场的作用下易于回收再生。将CuFe₂O₄负载在HKUST-1上,能增强CuFe₂O₄小尺寸颗粒的稳定性和分散性,提高了对萘的捕获能力和吸附能力。经过测试,吸附剂的用量为0.5g/L时,对萘的吸附效果达到90%。最后,通过动力学模型和热力学模型来说明其吸附机理。

Abstract

CuFe₂O₄/Cu-metal-organic frameworks (CuFe₂O₄/HKUST-1) was synthesized in situ by solvothermal method.Firstly,CuFe₂O₄ was synthesized by solvothermal method.The synthesized CuFe₂O₄ released Cu²⁺ during heating,then HKUST-1 was formed by the released Cu²⁺ were combined with organic ligands in-situ growth.Finally,CuFe₂O₄/HKUST-1 complex was obtained.The adsorption test was carried out by using a polycyclic aromatic hydrocarbon-naphthalene in an aqueous solution with the synthesized composite sample.CuFe₂O₄ not only provided an adsorption active site during the adsorption process,but also it was easy to recover and regenerate under the action of an external magnetic field due to its good magnetic properties.The loading of CuFe₂O₄ on HKUST-1 can enhance the stability and dispersibility of CuFe₂O₄ small-sized particles and improved the capture ability and adsorption capacity of naphthalene.After testing,the amount of adsorbent was 0.5g/L,and the adsorption effect on naphthalene can reach 90%.Finally,the adsorption mechanism was illustrated by a kinetic model and a thermodynamic model.

关键词

铁酸铜 / 金属有机骨架 / 萘 / 吸附

Key words

copper ferrite / metal-organic frameworks(MOF) / naphthalene / adsorption

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原位合成CuFe₂O₄/Cu-金属有机框架及其对萘的吸附机理和性能研究[J]. 化工新型材料, 2020, 48(6): 196-202 DOI:

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