Preparation method of chiral ZIF-8 (at) MXene/CA composite porous material

A technology of ZIF-8 and porous materials, applied in separation methods, chemical instruments and methods, alkali metal compounds, etc., to achieve the effects of improving adsorption separation selectivity, improving dispersibility and stability, and improving specific surface area and mechanical properties

Active Publication Date: 2022-08-09
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation of chiral ZIF-8@MXene / cellulose composite airgel and its application in the field of chiral separation have not been reported

Method used

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  • Preparation method of chiral ZIF-8 (at) MXene/CA composite porous material
  • Preparation method of chiral ZIF-8 (at) MXene/CA composite porous material
  • Preparation method of chiral ZIF-8 (at) MXene/CA composite porous material

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Embodiment 1

[0026] A preparation method of a chiral ZIF-8@MXene / CA composite porous material, comprising the following steps:

[0027] Step 1. Preparation of chiral ZIF-8@MXene materials: (1) Using D-histidine as the chiral ligand, 0.075g D-histidine and 0.285g 2-methylimidazole were dissolved in 10 mL of deionized In water, prepare 10mL mixed solution of D-histidine and 2-methylimidazole with a certain concentration;

[0028] (2) Dissolve 0.0135g of sodium formate and 0.145g of zinc nitrate in 1mL of deionized water to prepare 1mL of a mixed solution of zinc nitrate and sodium formate with a certain concentration;

[0029] (3) To the solution obtained in (1), add 100 mg of Ti peeled off by etching 3 C 2 -MXene, ultrasonically dispersed for 20min, then add the mixed solution obtained in (2) dropwise, and stir evenly;

[0030] (4) put the mixed solution obtained in (3) into the 85°C reactor for hydrothermal reaction for 24h;

[0031] (5) the mixed solution obtained in (4) is centrifuge...

Embodiment 2

[0038] A preparation method of a chiral ZIF-8@MXene / CA composite porous material, comprising the following steps:

[0039]Step 1. Preparation of chiral ZIF-8@MXene material: (1) Using D-histidine as the chiral ligand, 0.08g D-histidine and 0.29g 2-methylimidazole were dissolved in 12mL of deionized In water, prepare 12mL mixed solution of D-histidine and 2-methylimidazole with a certain concentration;

[0040] (2) Dissolve 0.014g of sodium formate and 0.15g of zinc nitrate in 1mL of deionized water to prepare a mixed solution of zinc nitrate and sodium formate of a certain concentration;

[0041] (3) To the solution obtained in (1), add 100 mg of Ti peeled off by etching 3 C 2 -MXene, ultrasonically dispersed for 30min, then added dropwise the mixed solution obtained in (2), and stirred evenly;

[0042] (4) put the mixed solution obtained in (3) into the 85°C reactor for hydrothermal reaction for 22h;

[0043] (5) the mixed solution obtained in (4) is centrifuged at a cent...

Embodiment 3

[0050] A preparation method of a chiral ZIF-8@MXene / CA composite porous material, comprising the following steps:

[0051] Step 1. Preparation of chiral ZIF-8@MXene material: (1) Using D-histidine as the chiral ligand, 0.07g D-histidine and 0.28g 2-methylimidazole were dissolved in 9mL of deionized In water, prepare 9mL mixed solution of certain concentration D-histidine and 2-methylimidazole;

[0052] (2) Dissolve 0.013g of sodium formate and 0.14g of zinc nitrate in 0.9mL of deionized water to prepare 0.9mL of a mixed solution of zinc nitrate and sodium formate with a certain concentration;

[0053] (3) To the solution obtained in (1), 90 mg of Ti peeled off by etching was added 3 C 2 -MXene, ultrasonically dispersed for 20min, then add the mixed solution obtained in (2) dropwise, and stir evenly;

[0054] (4) put the mixed solution obtained in (3) into the 80°C reactor for hydrothermal reaction for 24h;

[0055] (5) the mixed solution obtained in (4) is centrifuged at a...

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Abstract

The invention relates to the field of new materials, in particular to a preparation method of a chiral ZIF-8 (at) MXene/CA composite porous material, which comprises the following steps: preparing chiral ZIF-8 by using D-histidine as a chiral ligand, adding etched and peeled Ti3C2-MXene to prepare a chiral ZIF-8 (at) MXene material, then adding sodium carboxymethyl cellulose and polyethylene glycol diglycidyl ether to functionalize a polymer, and preparing the chiral ZIF-8 (at) MXene/CA composite porous material. And finally, carrying out freeze drying to obtain the chiral ZIF-8 (at) MXene/CA material. The method is mild in reaction condition and simple in process, and the prepared composite porous material is large in specific surface area, high in selectivity and stable in mechanical property and can be used as a solid-phase extraction monolithic column of a chiral compound.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a preparation method of a chiral ZIF-8@MXene / CA composite porous material. Background technique [0002] With abundant sources and low cost, cellulose is one of the most sustainable raw materials in the preparation of aerogels. Cellulose-based aerogels (CA) made from cellulose and its derivatives have excellent structures with high porosity, high specific surface area, ultra-low density, and good biocompatibility and degradability. It has shown great potential in the fields of adsorption, catalysis, energy and medicine. So far, there are few reports of cellulose-based aerogels as solid-phase extraction materials, and they have problems such as small specific surface area, poor mechanical properties, and low separation selectivity. [0003] Metal-organic frameworks (MOFs) are a class of coordination polymers composed of multidentate organic ligands and metal ions self-assembled, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01J20/28B01J20/291B01J20/29B01D15/38
CPCB01J20/26B01J20/28064B01J20/28011B01J20/291B01J20/29B01D15/3833B01J2220/54Y02E60/13
Inventor 刘静徐雯邱梦杰贾赵平陈厶墁柳安顺
Owner BEIJING FORESTRY UNIVERSITY
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