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Metal organic framework material as well as preparation method and application thereof

A metal-organic framework and composite material technology, applied in the field of material preparation, can solve the problems of tediousness, detection sensitivity and accuracy easily interfered by matrix effects, etc., and achieve the effects of low economic cost, strong acid and alkali resistance, and good application prospects

Active Publication Date: 2017-07-28
INST OF VEGETABLE & FLOWERS CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional pesticide sample pretreatment technology is often cumbersome to operate, and the detection sensitivity and accuracy are easily interfered by matrix effects.

Method used

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  • Metal organic framework material as well as preparation method and application thereof
  • Metal organic framework material as well as preparation method and application thereof
  • Metal organic framework material as well as preparation method and application thereof

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preparation example Construction

[0022] A method for preparing a metal organic framework material provided by an embodiment of the present invention includes:

[0023] Preparation of magnetic graphene oxide materials.

[0024] Disperse graphene oxide in water, in order to disperse evenly and react fully, under the condition of mechanical stirring, add FeCl 3 , FeCl 2 . Due to FeCl 3 , FeCl 2 It is easy to absorb moisture in the air. In the embodiment of the present invention, specifically, adding FeCl 3 ·6H 2 O and FeCl 2 4H 2 O. Preferably, the stirring rate is 600-1200 rpm, the reaction temperature is 60-90° C., and the reaction time is 0.5-1 h. Ammonia water was added to continue the reaction for 0.5-1.5h. Preferably, the mass percentage of ammonia water is 25%. In other embodiments of the present invention, the mass percentage of ammonia water may be 28%. During this reaction, graphene oxide is deposited onto the generated Fe 3 o 4 particle surface.

[0025] Preferably, the oxygen in the ai...

Embodiment 1

[0045] This embodiment provides a metal organic framework material and a preparation method thereof, including:

[0046] Dissolve aminocyclodextrin, EDC and NHS in PBS buffer solution and activate for 0.5h. Then mix it evenly with the magnetic graphene oxide material, and shake it for 20 hours.

[0047] Wherein, the dosage ratio of aminocyclodextrin, EDC, NHS, magnetic graphene oxide material, and PBS buffer solution is 4mg:12mg:3mg:12mg:8mL.

[0048] After the reaction, the reaction product is separated by magnetic adsorption, washed and dried in vacuum to obtain a magnetic graphene oxide / aminocyclodextrin composite material.

[0049] Suspend the magnetic graphene oxide / aminocyclodextrin composite material in a mixed solution of thioglycolic acid and ethanol, and react for 0.1 h. Add dissolved H 3 DMF and ethanol mixed solution of BTC. After reacting for 0.1 h under the condition of mechanical stirring, copper acetate aqueous solution was added and reacted for 5 h. Triet...

Embodiment 2

[0053] This embodiment provides a metal organic framework material and a preparation method thereof, including:

[0054] Disperse graphene oxide in water, under the condition of mechanical stirring, under the protection of nitrogen, add FeCl 3 ·6H 2 O and FeCl 2 4H 2 O, at 60°C, react for 0.5h. After the reaction was completed, aqueous ammonia was added to continue the reaction for 0.5 h.

[0055] Among them, graphene oxide, water, FeCl 3 ·6H 2 O, FeCl 2 4H 2 O, the consumption ratio of ammoniacal liquor is 0.2mg:240mL:1.8g:0.75g:10mL.

[0056] After the reaction is finished, ethanol and water are used for magnetic adsorption separation, washing and purification of the reaction product, and vacuum drying to obtain a magnetic graphene oxide material.

[0057] Dissolve aminocyclodextrin, EDC and NHS in PBS buffer solution and activate for 0.5h. Then mix it evenly with the magnetic graphene oxide material dispersed by ultrasound, and shake it for 20 hours.

[0058] Whe...

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Abstract

The invention discloses a metal organic framework material as well as a preparation method and application thereof, and relates to the technical field of preparation of materials. The preparation method of the metal organic framework material comprises the following step: performing reaction on a magnetic graphene oxide / aminocyclodextrin composite material formed by compounding a magnetic graphene oxide material with aminocyclodextrin, an organic ligand and a metal compound. The method is simple in preparation process, high in controllability, low in cost and favorable for large-scale production. The metal organic framework material is prepared by the method. The material is high in stability, high in acid and base resistance, resistant to matrix interference, easy to store, high in adsorption flux and low in economical cost and can realize quick enrichment and removal of pesticide pollutants.

Description

technical field [0001] The invention relates to the technical field of material preparation, and in particular to a metal organic framework material, its preparation method and application. Background technique [0002] Neonicotinoid pesticides are a general term for a class of neuroactive insecticides related to nicotine. The active ingredients of neonicotinoid pesticides are made into hundreds of products and sold in more than 100 countries. But most neonicotinoid pesticides are highly toxic to bees and can cause disturbances in the hive, eventually causing the hive to disintegrate. Neonicotinoid pesticides also have an impact on human health. Since neonicotinoid pesticides are spectrum systemic insecticides, there will be residues in food. The human body consumes a large amount of fruits and teas containing neonicotinoid pesticide residues, which can easily cause headache, fatigue, finger tremor, transient amnesia, fever, cough, palpitations, chest pain, stomach pain, ...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/223B01J20/28009C02F1/285C02F2101/306
Inventor 徐东辉刘广洋李凌云黄晓东林桓郑姝宁张延国
Owner INST OF VEGETABLE & FLOWERS CHINESE ACAD OF AGRI SCI
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