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Vesicle type MOF/GO composite material and preparation method thereof

A technology of composite materials and vesicles, applied in the field of composite materials, can solve the problems of uneven dispersion of MOF, affecting the performance of MOF-GO composite materials, poor stability, etc., to achieve uniform distribution, high recombination rate, and good stability Effect

Active Publication Date: 2022-06-17
SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Existing MOF-GO composite materials are all prepared by dispersing metal frame materials in graphene oxide aqueous solution; the MOF in the composite materials prepared by this method is not uniformly dispersed on the surface of graphene oxide, and the stability is not good , thus affecting the performance of MOF-GO composites

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  • Vesicle type MOF/GO composite material and preparation method thereof

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preparation example Construction

[0032] The invention provides a preparation method of a vesicle-type MOF / GO composite material, comprising the following steps:

[0033] Step 1, using Hummers method to carry out oxidation peeling treatment on graphite to obtain graphene oxide;

[0034] Step 2, dispersing the prepared graphene oxide in an aqueous solution and ultrasonically dispersing for 1-1.5 h to obtain a graphene oxide dispersion; the concentration of the graphene oxide dispersion is 2-3 mg / mL;

[0035] Step 3, prepare oil phase solution and water phase solution; wherein, oil phase solution is prepared by dissolving organic ligands in water-insoluble organic solvent; water phase solution includes deionized aqueous solution dissolved with metal salt and prepared in step 2 The obtained graphene oxide dispersion; the concentration of the oil phase solution is 10~15mg / mL; in the deionized aqueous solution dissolved with the metal salt, the concentration of the metal salt is 5~8mg / mL; the organic ligand is pref...

Embodiment 1

[0042] The preparation method of the vesicle-type MOF / GO composite material of this embodiment 1 includes the following steps:

[0043] Step 1, using Hummers method to carry out oxidation peeling treatment on graphite to obtain graphene oxide;

[0044] Step 2, dispersing the prepared graphene oxide in an aqueous solution and ultrasonically dispersing for 1 h to obtain a graphene oxide dispersion liquid with a concentration of 2 mg / mL;

[0045]Step 3, prepare an oil phase solution and an aqueous phase solution; wherein, the oil phase solution is an octanol solution (5 mL) dissolved with 68.7 mg of methylimidazole; the aqueous phase solution includes dissolved ZnSO 4 .7H 2 O (32.3 mg) in deionized water (5 mL) and graphene oxide dispersion (5 mL).

[0046] Step 4: Mix the above-mentioned oil phase solution and aqueous phase solution, and use a high-shear emulsifier B25 to emulsify the mixed solution at a rotational speed of 10,000 rpm for 5 minutes to obtain an emulsion; heat ...

Embodiment 2

[0053] The preparation method of the vesicle-type MOF / GO composite material of this embodiment 2 includes the following steps:

[0054] Step 1, using Hummers method to carry out oxidation peeling treatment on graphite to obtain graphene oxide;

[0055] Step 2, dispersing the prepared graphene oxide in an aqueous solution and ultrasonically dispersing for 1 h to obtain a graphene oxide dispersion liquid with a concentration of 2 mg / mL;

[0056] Step 3, prepare oil phase solution and water phase solution; wherein, the oil phase solution is an octanol solution (5mL) dissolved with 75mg methylimidazole; the water phase solution includes a deionized aqueous solution (30mg) dissolved with zinc nitrate hexahydrate ( 5 mL) and graphene oxide dispersion (5 mL).

[0057] Step 4: Mix the above-mentioned oil phase solution and aqueous phase solution, and use a high-shear emulsifier B25 to emulsify the mixed solution at a rotational speed of 10,000 rpm for 5 minutes to obtain an emulsion;...

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Abstract

The invention discloses a vesicle type MOF / GO composite material and a preparation method thereof. The method comprises the following steps: carrying out oxidation stripping treatment on graphite to obtain graphene oxide; dispersing graphene oxide in an aqueous solution to obtain a graphene oxide dispersion liquid; an oil phase solution and a water phase solution are prepared, and the oil phase solution is prepared by dissolving an organic ligand in a water-insoluble organic solvent; the water phase solution comprises a deionized water solution in which metal salt is dissolved and a graphene oxide dispersion liquid; mixing the oil phase solution and the water phase solution, emulsifying the mixed solution to obtain an emulsion, and heating the emulsion to enable MOF crystal grains to grow on the surface of the graphene oxide; adding a certain amount of organic ligand and metal salt again, and emulsifying again; and heating the emulsion obtained after emulsification to promote growth of MOF crystal grains so as to obtain the vesicle type MOF / GO composite material. The vesicle type composite material has excellent adsorption characteristics, and can realize effective selective adsorption of specified components.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and particularly relates to a vesicle-type MOF / GO composite material and a preparation method thereof. Background technique [0002] With the continuous development of social economy, global warming caused by the greenhouse effect has become an urgent problem for human beings. Industrial development, economic growth, and human life are all inseparable from energy. Therefore, we need to continuously develop new technologies and create new materials to reduce the impact of greenhouse gases on the environment and the climate. [0003] MOFs have excellent properties such as high porosity, controllable structure, and easy modification, but also have some disadvantages, such as poor chemical stability and thermal stability, which largely limit the application and development of MOFs. In order to realize the application of MOFs in practical production, new functionalities need to be introd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08K3/04B01J20/26B01J20/30B01D53/02
CPCC08G83/008C08K3/042B01J20/226B01D53/02
Inventor 卞子君卢承政何川张发捷王丽朋吴国勋李昂李乐田孔凡海
Owner SUZHOU XIRE ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
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