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Method for macroscopically preparing MOFs (metal-organic framework)@natural polymer novel composite material

A technology of natural polymers and composite materials, which is applied in the field of macro-scale preparation of MOFs@natural polymer new composite materials, can solve the problems such as the influence of the performance of new MOFs@polymer composite materials that have not been reported, and achieves wide source, simple process, Expand the effect of practical application

Active Publication Date: 2019-02-12
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the effect of MOFs micromorphology on the properties of MOFs@polymer novel composites has not been reported yet.

Method used

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  • Method for macroscopically preparing MOFs (metal-organic framework)@natural polymer novel composite material
  • Method for macroscopically preparing MOFs (metal-organic framework)@natural polymer novel composite material

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Experimental program
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Effect test

Embodiment 1

[0024] A method for macro-preparing MOFs@natural polymer novel composite materials, which is prepared from natural polymers, metal salts and carboxylic acid organic ligands, and specifically includes the following steps:

[0025] (1) According to the weight ratio of metal salt: natural macromolecule: carboxylic acid organic ligand: 3:7:1.6, take metal salt, natural macromolecule and carboxylic acid organic ligand for subsequent use; the metal salt copper nitrate, the natural polymer is chitosan, and the carboxylic acid organic ligand is trimesic acid;

[0026] (2) Modify the natural polymer, the specific modification method is: mix butanol and water according to the volume ratio butanol: water ratio of 7: 1 to obtain a mixed solvent, according to the natural polymer: mixed solvent is 1.5: 100% by weight of the natural polymer dispersed in the mixed solvent, then add magnesium sulfate and mix together, react for 3 h, the modified natural polymer solution can be obtained, the we...

Embodiment 2

[0030] A method for macro-preparing MOFs@natural polymer novel composite materials, which is prepared from natural polymers, metal salts and carboxylic acid organic ligands, and specifically includes the following steps:

[0031] (1) According to the weight ratio of metal salt: natural polymer: carboxylic acid organic ligand: 1:2:0.5, the metal salt, natural polymer and carboxylic acid organic ligand are used for subsequent use; the metal salt is zinc nitrate, the natural polymer is chitin, and the carboxylic acid organic ligand is terephthalic acid;

[0032](2) To modify the natural polymer, the specific modification method is: mix alkaline isopropanol and water according to the volume ratio of alkaline isopropanol: water 6: 0.5 to obtain a mixed solvent, according to the natural polymer : the mixed solvent is 1:100 weight ratio and the natural macromolecule is dispersed in the mixed solvent, then add sodium chloroacetate and mix and stir together, react 2h, can obtain the mo...

Embodiment 3

[0036] A method for macro-preparing MOFs@natural polymer novel composite materials, which is prepared from natural polymers, metal salts and carboxylic acid organic ligands, and specifically includes the following steps:

[0037] (1) According to the weight ratio of metal salt: natural polymer: carboxylic acid organic ligand: 5:12:2.5, take metal salt, natural polymer and carboxylic acid organic ligand for subsequent use; the metal salt is ferric chloride, the natural macromolecule is starch, sodium alginate and sea squirt, and the carboxylic acid organic ligand is pyromellitic acid;

[0038] (2) To modify the natural polymer, the specific modification method is: mix glycerin and water according to the ratio of glycerol: water in the volume ratio of 8:2 to obtain a mixed solvent, according to the weight of natural polymer: mixed solvent is 2:100 Ratio Disperse the natural polymer in the mixed solvent, then add the modifier and mix and stir together, and react for 4 hours to ob...

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Abstract

The invention relates to the field of metal-organic framework compounds, in particular to a method for macroscopically preparing an MOFs (metal-organic framework)@natural polymer novel composite material. The method takes a natural polymer material, metal salt and a carboxylic acids organic-ligand as raw materials to prepare the novel composite material, wherein the weight ratio of the metal saltto the natural polymer to the carboxylic acids organic-ligand is (1-10) to (2-20) to (0.5-5). The technology is simple and universal; the natural polymer is wide in source and green and free of toxicity; the morphological structure of MOFs can be controlled and changed by regulating the surface roughness of a polymer substrate; the material has the advantages that the material is easy to be controlled to form, the size and morphology of the microscopic MOFs particles are controllable, and the material can be macroscopically and controllably prepared. The method widens the practical applicationof MOFs, and explores a new route to prepare other MOFs@natural polysaccharide novel composite materials with controllable macroscopic shape and programmable property.

Description

technical field [0001] The invention relates to the field of metal-organic framework compounds, in particular to a method for macro-preparing MOFs@natural polymer novel composite materials. Background technique [0002] In recent years, metal-organic frameworks (MOFs) compounds have specific channel / hole structures, and have the characteristics of rich structures and tunable properties. Owing to their favorable properties, such as large surface area, tunable pore size, and functionality, they have great potential in many applications, such as gas separation and storage, catalysis, sensing, and drug delivery. Synthetic MOFs particles are usually smaller than 10 μm, which are easily inhaled into the lungs and pose a serious threat to people's health. In addition, brittle MOFs materials still pose great challenges in processing due to their insolubility and insolubility. Novel composites of MOFs@polymers have been shown to be useful in overcoming technical issues in particle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 林宝凤黄国焕徐传辉
Owner GUANGXI UNIV
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