磁性金属有机框架材料制备及吸附性能研究

doi:10.19964/j.issn.1006-4990.2020-0610

Abstract

Abstract:

Magnetic MIL-101（Fe）/CoFe₂O₄ and MIL-101（Fe）/NiFe₂O₄ composites were synthesized by a simple solvothermal method.The composite phase structure,morphology,magnetic properties and adsorption properties were investigated by X-Ray diffractometer（XRD）,scanning electron microscope（SEM）,vibrating magnetometer（VSM）,thermal gravimetric analyzerand（TGA） and UV-vis spectrophotometer（UV）,etc.The magnetic metal organic framework was used to adsorb Rhodamine B,and the effect of initial concentration on the adsorption capacity of Rhodamine B was studied.The results showed that the prepared magnetic metal matrix composites had uniform morphology,high crystallinity and high saturation magnetization.The composite had the double advantage of metal-organic skeleton material and magnetic material.MIL-101（Fe）/CoFe₂O₄ had higher adsorption capacity to Rhodamine B（97.3 mg/g）.Thermodynamic study showed that the adsorption isotherm equation accorded with Langmuir model,and the adsorption kinetics study showed that the adsorption mechanism was related to the adsorbates and adsorbents.Magnetic metal-organic framework nanocomposites would have broad application prospects as sewage treatment agents.

Key words: metal organic framework materials, magnetic materials, adsorption, sewage treatment, Rhodamine B

CLC Number:

TQ138.11

Wang Lixia,Ren Dongmei,Wang Qiong,Chang Chun. Stduy on preparation of magnetic metal-organic frame materials and their adsorption properties[J]. Inorganic Chemicals Industry, 2021, 53(9): 46-50.

Figures/Tables 9

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References 12

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样品名称	质量损失率/%
样品名称	90 ℃	310 ℃	520 ℃	990 ℃
MIL-101（Fe）/CoFe₂O₄	3.1	7.3	20.8	28.4
MIL-101（Fe）	8.5	25.2	63.1	74.2

样品名称	M_s/（A·m²·kg^-1）	M_r/（A·m²·kg^-1）	H_c/（1 000 A·m^-1）
MIL-101（Fe）/CoFe₂O₄	132.4	17.6	14.0
MIL-101（Fe）/NiFe₂O₄	87.0	23.6	14.1
CoFe₂O₄	172.1	20.8	14.3
NiFe₂O₄	116.0	26.2	14.4

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Stduy on preparation of magnetic metal-organic frame materials and their adsorption properties

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