Metal organic framework material with one-dimensional woven structure and preparation method and application thereof

A metal-organic framework, rod-shaped material technology, applied in the field of environmental inspection, can solve the problems of low adsorption efficiency, poor circulation and regeneration performance of adsorbents, etc.

Active Publication Date: 2020-10-30
SHANDONG ANALYSIS & TEST CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after research by the inventors, it was found that conventional adsorbents have low adsorption efficiency and poor cycle and regeneration performance.

Method used

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  • Metal organic framework material with one-dimensional woven structure and preparation method and application thereof
  • Metal organic framework material with one-dimensional woven structure and preparation method and application thereof
  • Metal organic framework material with one-dimensional woven structure and preparation method and application thereof

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Embodiment approach

[0036] The third embodiment of the present invention provides an application of the above-mentioned one-dimensional woven structure metal-organic framework material in the removal of perfluorooctanoic acid in water.

[0037] The fourth embodiment of the present invention provides a method for treating perfluorooctanoic acid in water. The above-mentioned one-dimensional braided metal-organic framework material is added to the water to be treated for adsorption, and the adsorbed one-dimensional braided structure is functionalized with metal. The organic framework material can be removed.

[0038] In some examples of this embodiment, NaCl is used to adjust the ionic strength of the water to be treated.

[0039] In some examples of this embodiment, the ionic strength of the water to be treated is adjusted to be 0-30%.

[0040] In some examples of this embodiment, the pH is adjusted to be 3-12 during the adsorption process.

[0041] In order to enable those skilled in the art to ...

Embodiment 1

[0042] Example 1: Preparation of metal organic framework materials containing carboxyl groups, such as figure 1 Shown:

[0043] 0.31g 4,4'-bipyridyl was added to 0.34g AgNO 3 Add 0.21g of 1,2,3-benzenetricarboxylic acid to 70mL of the solution, stir evenly, adjust the pH of the solution to 6 with KOH, and react at 160°C for 72h to obtain a carboxyl-containing metal-organic framework material, denoted as MOF-COOH, Its structure looks like figure 2 As shown in A, it is a one-dimensional braided structure, and the element analysis is as follows figure 2 D shows.

Embodiment 2

[0044] Example 2: Preparation of metal organic framework materials containing amino groups, such as figure 1 Shown:

[0045] 0.31g 4,4'-bipyridyl was added to 0.34g AgNO 3 Add 0.18g of 2-aminoisophthalic acid to 70mL of the solution after stirring evenly, adjust the pH of the solution to 6 with KOH, and react at 160°C for 72h to obtain a metal-organic framework material containing amino groups, denoted as MOF-NH 2 , whose structure looks like figure 2 As shown in B, it is a one-dimensional braided structure, and the element analysis is as follows figure 2 Shown in E.

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Abstract

The invention discloses a metal organic framework material with a one-dimensional woven structure as well as a preparation method and application thereof; silver salt, benzoic acid compounds and pyridine compounds are used as raw materials and synthesized by adopting a hydrothermal method to obtain the functionalized metal organic framework material with the one-dimensional woven structure; the benzoic acid compounds are selected from 1, 2, 3-trimellitic acid, 2-aminoisophthalic acid and 5-hydroxyisophthalic acid, and the pyridine compound is 4, 4 '-bipyridine. The prepared metal organic framework material is of a rod-like structure, the diameters of the metal organic framework material are different due to different ligands, the rod-like materials are overlapped to form the one-dimensional woven structure, and adsorption of perfluorooctanoic acid in a sample is better facilitated.

Description

technical field [0001] The invention relates to a preparation method of a one-dimensional woven structure metal-organic framework material and its application in the field of perfluorooctanoic acid adsorption, and belongs to the technical field of environmental inspection. Background technique [0002] The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not necessarily be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] Perfluorinated compounds (PFCs) are a class of artificially synthesized organic fluorides in which the hydrogen atoms on the alkyl chain are replaced by fluorine atoms. Due to their thermal stability and hydrophobicity, PFCs are widely used as surfactants, flame retardants, lubricants, wetting agents, and polymer additives. These compounds contain high-e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/36
CPCB01J20/226B01J20/28038C02F1/285C02F2101/36
Inventor 赵汝松李秋琳王晓利王霞林卫峰林金明
Owner SHANDONG ANALYSIS & TEST CENT
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