Magnetic composite adsorption material based on Fe3O4-Co-based MOFs, and preparation method of magnetic composite adsorption material

A composite adsorption material, fe3o4-co technology, applied in adsorption water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., which can solve problems such as difficulty in recycling adsorption materials and secondary pollution , to avoid secondary pollution, reduce adsorption costs, and improve utilization

Pending Publication Date: 2020-02-04
莫林祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the deficiencies in the prior art, the present invention provides a Fe-based 3 o 4 -The magnetic composite adsorption material of Co-based MOFs and its preparation method solve the problem that the existing adsorption materials are difficult to simultaneously adsorb and treat heavy metals, organic pollutants and algae pollution, and the recovery of the adsorption materials is difficult, which is easy to cause Secondary pollution

Method used

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  • Magnetic composite adsorption material based on Fe3O4-Co-based MOFs, and preparation method of magnetic composite adsorption material
  • Magnetic composite adsorption material based on Fe3O4-Co-based MOFs, and preparation method of magnetic composite adsorption material
  • Magnetic composite adsorption material based on Fe3O4-Co-based MOFs, and preparation method of magnetic composite adsorption material

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preparation example Construction

[0026] Co-based MOFs material preparation method comprises the following steps:

[0027] (1) Add an appropriate amount of absolute ethanol to the reaction flask, add 2-nitroisophthalic acid and stir to dissolve, add an appropriate amount of distilled water and sodium hydroxide, the volume ratio of absolute ethanol and distilled water is 1:1.5-2, and The reaction bottle was placed in a constant temperature water bath and heated to 70-80°C, refluxed for 2-4h, then added glucose (C 6 h 12 o 6 ), the mass ratio of 2-nitroisophthalic acid, sodium hydroxide and glucose is 1:2-2.5:5-6, the reaction temperature is reduced to 40-50°C, the reaction is stirred at a constant speed for 20-25h, and the reaction is passed by TLC The reaction process was observed by thin-layer chromatography. After the reaction of 2-nitroisophthalic acid was complete, hydrochloric acid solution was added dropwise to the reaction flask, the pH of the solution was adjusted to 4-5, and the mixture was stirred ...

Embodiment 1

[0034] (1) Preparation of organic ligand 2,2',6,6'-azobenzene tetracarboxylate compound 1: add an appropriate amount of absolute ethanol to the reaction flask, add 2-nitroisophthalic acid and stir to dissolve, add an appropriate amount of distilled water and sodium hydroxide, absolute ethanol and distilled water volume ratio is 1:1.5, the reaction bottle is placed in a constant temperature water bath and heated to 70 ° C, reflux reaction 2h, then add glucose (C 6 h 12 o 6 ), the mass ratio of 2-nitroisophthalic acid, sodium hydroxide and glucose is 1:2:5, the reaction temperature is down to 40°C, and the reaction is stirred at a constant speed for 20h, and the reaction is observed by TLC thin layer chromatography. , when the reaction of 2-nitroisophthalic acid is complete, add hydrochloric acid solution dropwise to the reaction flask, adjust the pH of the solution to 5, stir at a constant speed for 2 hours, add an appropriate amount of distilled water and ethyl acetate to the...

Embodiment 2

[0039] (1) Preparation of organic ligand 2,2',6,6'-azobenzene tetracarboxylate compound 2: add an appropriate amount of absolute ethanol to the reaction flask, add 2-nitroisophthalic acid and stir to dissolve, add an appropriate amount of Distilled water and sodium hydroxide, the volume ratio of absolute ethanol and distilled water is 1:1.6, the reaction bottle is placed in a constant temperature water bath and heated to 70 ° C, reflux for 3 hours, then add glucose (C 6 h 12 o 6 ), the mass ratio of 2-nitroisophthalic acid, sodium hydroxide and glucose is 1:2:5, the reaction temperature is down to 40°C, and the reaction is stirred at a constant speed for 20h, and the reaction is observed by TLC thin layer chromatography. , when the reaction of 2-nitroisophthalic acid is complete, add hydrochloric acid solution dropwise to the reaction flask, adjust the pH of the solution to 4, stir at a constant speed for 2 hours, add an appropriate amount of distilled water and ethyl acetate...

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Abstract

The invention relates to the technical field of composite adsorption materials, and discloses a magnetic composite adsorption material based on Fe3O4-Co-based metal organic frameworks (MOFs), and a preparation method of the magnetic composite adsorption material. The magnetic composite adsorption material comprises the following formula raw materials: a Co-tetra(formate)azobenzene MOFs material, FeCl3, Fe2SO4 and a reducing agent. According to the magnetic composite adsorption material based on the Fe3O4-Co-based MOFs and the preparation method of the magnetic composite adsorption material, the Co-tetra(formate)azobenzene MOFs material has a uniform particle size and a good core-shell network structure; the MOFs material is regulated and controlled by a highly controllable synthesis method, so that the magnetic composite adsorption material has a huge specific surface and a rich and regular pore channel structure; through an adsorption flocculation effect, the magnetic composite adsorption material has a good adsorption effect on organic pollutants and has a certain flocculation adsorption effect on algae; Fe3O4 nano particles with excellent magnetism uniformly grow on the surfaceand in pore channels of the Co-tetra(formate)azobenzene MOFs material, so that the Fe3O4 nano particles are prevented from being agglomerated into macromolecular particles; and in addition, the magnetic composite adsorption material can be recovered by magnetic adsorption through an additional magnetic field and magnetic effect.

Description

technical field [0001] The technical field of the composite adsorption material of the present invention is specifically a kind of Fe-based 3 o 4 -Magnetic composite adsorption material of Co-based MOFs and its preparation method. Background technique [0002] Water is the source of life, a necessary condition for the existence of life and economic development, and an important part of human tissue. Water pollution is caused by harmful chemical substances that reduce or lose the use value of water, which leads to environmental pollution. my country is a water resource. A country with shortages and frequent water disasters. However, 82% of people in our country drink shallow wells and river water. Among them, more than 75% of the water resources are seriously polluted and bacteria exceed the hygienic standard. The drinking water population polluted by organic matter is about 160 million, and the water body is polluted. The pollutants mainly include domestic sewage discharged ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F1/52C02F1/54C02F101/20C02F101/30
CPCB01J20/06B01J20/226B01J20/28009B01J2220/4806B01J2220/4812C02F1/281C02F1/285C02F1/5236C02F1/54C02F2101/20C02F2101/30
Inventor 莫林祥
Owner 莫林祥
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