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A kind of metal-organic ligand doped amino acid composite material and its preparation method by supergravity method

A metal-organic, composite material technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve the problems affecting the application of MOFs, weak selective adsorption, long synthesis time, etc. Select the effect of adsorption capacity, fast synthesis speed, and short time required

Active Publication Date: 2020-07-28
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing MOFs are easily affected by acid-base environment and high temperature and pressure, prone to different degrees of collapse, easy to dissolve in water, weak selective adsorption, long synthesis time, uneven crystal form and other defects, which affect the practical application of MOFs.

Method used

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  • A kind of metal-organic ligand doped amino acid composite material and its preparation method by supergravity method
  • A kind of metal-organic ligand doped amino acid composite material and its preparation method by supergravity method
  • A kind of metal-organic ligand doped amino acid composite material and its preparation method by supergravity method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing a metal-organic ligand-doped amino acid composite material by the hypergravity method, comprising the following steps,

[0032] (1) Preparation of zirconium chloride solution: put 25mL N,N-dimethylformamide (DMF) solvent in a 50mL beaker, weigh 1.0mmol zirconium chloride (ZrCl 4 ) was slowly added into the beaker, and the beaker was placed on the stirring device to stir magnetically at a speed of 400rmp / min to fully dissolve the zirconium chloride, which was recorded as solution A;

[0033] (2) Preparation of terephthalic acid solution: take 2.0mmol terephthalic acid (H 2 BDC) was dissolved in N,N-dimethylformamide (DMF) solvent to make it fully dissolved, and then 1.439g of proline was added therein; denoted as solution B;

[0034] (3) Preparation of composite material: solution B was added dropwise into solution A while being magnetically stirred. Then add 1.6mL glacial acetic acid to the above mixed solution, transfer the whole mixed solution...

Embodiment 2

[0036] A method for preparing a metal-organic ligand-doped amino acid composite material by the hypergravity method, comprising the following steps,

[0037] (1) Preparation of zirconium chloride solution: put 15mL N,N-dimethylformamide (DMF) solvent in a 50mL beaker, weigh 1.0mmol zirconium chloride (ZrCl 4 ) was slowly added into the beaker, and the beaker was placed on the stirring device to stir magnetically at a speed of 500rmp / min to fully dissolve the zirconium chloride, which was designated as solution A;

[0038] (2) Preparation of terephthalic acid solution: take 1.0mmol terephthalic acid (H 2 BDC) was dissolved in N,N-dimethylformamide (DMF) solvent to make it fully dissolved, and 1.734g of phenylalanine was added therein; denoted as solution B;

[0039] (3) Preparation of composite material: solution B was added dropwise into solution A while being magnetically stirred. Then add 2.0mL glacial acetic acid to the above mixed solution, transfer the whole mixed solut...

Embodiment 3

[0041] A method for preparing a metal-organic ligand-doped amino acid composite material by the hypergravity method, comprising the following steps,

[0042] (1) Preparation of zirconium chloride solution: put 35mL N,N-dimethylformamide (DMF) solvent in a 50mL beaker, weigh 1.0mmol zirconium chloride (ZrCl 4 ) was slowly added into the beaker, and the beaker was placed on the stirring device to stir magnetically at a speed of 300rmp / min to fully dissolve the zirconium chloride, which was recorded as solution A;

[0043] (2) Preparation of terephthalic acid solution: take 3.0mmol terephthalic acid (H 2 BDC) was dissolved in N,N-dimethylformamide (DMF) solvent to make it fully dissolved, and then 2.144g of tryptophan was added therein; denoted as solution B;

[0044](3) Preparation of composite material: solution B was added dropwise into solution A while being magnetically stirred. Then add 1.4mL glacial acetic acid to the above mixed solution, transfer the whole mixed soluti...

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Abstract

The invention discloses a supergravity method metal organic ligand doped amino acid composite material and a preparation method thereof. The method comprises the following steps: firstly preparing zirconium chloride solution denoted as solution A; preparing terephthalic acid solution, dissolving amino acid into the terephthalic acid solution, and denoting the mixed solution as solution B; feedingthe solution A into the solution B, meanwhile performing magnetic stirring, feeding glacial acetic acid into the mixed solution, transferring the mixed solution into a centrifuge tube, controlling thetemperature to be 20 to 70 DEG C, and ensuring that reaction is performed for 20 to 40min at ultrafast rotate speed of 8000 to 10000rmp / min and 500 to 1000W, so as to obtain the supergravity method metal organic ligand doped amino acid composite material. The material has the advantages that compared with a conventional crystal particle synthesized hydrothermally, the crystal particle of the material is smaller, the particle uniformity is high, and the BET specific surface area is high and is approximately 1400 to 1600m<2> / g. Meanwhile, the advantage of controllable amino acid doping ratio can be realized, and further the adsorption capacity and selectivity to dyes by the material is improved.

Description

technical field [0001] The invention belongs to the field of new functional materials, and in particular relates to an equihierarchic porous metal organic framework material and a preparation method thereof. Background technique [0002] In recent years, metal-organic frameworks (MOFs) materials, as a new class of nano-porous materials, have developed efficient, environmentally friendly and low-cost materials that are an important part of industrial development and applications. Nowadays, the degradation of organic dyes and the deposition of heavy metal ions in sewage have become an urgent problem in water pollution control and protection. The structure of MOFs has attracted attention because it contains nano-scale pore channels and cage structures, and has a variety of structures that are easy to control. At the same time, the metal ions in its center provide a large number of active sites. However, the existing MOFs are easily affected by acid-base environment and high te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22C02F1/28B01J20/30C08G83/00
CPCB01J20/226C02F1/285C08G83/008
Inventor 赵祯霞刘龙钟贞王家兴赵钟兴
Owner GUANGXI UNIV