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Metal organic framework/wood composite material, and preparation method and application thereof

A metal-organic framework and composite material technology, which is applied in the field of metal-organic framework/wood composite materials and their preparation, and can solve the problems of the preparation process and poor binding force, etc.

Active Publication Date: 2021-06-15
INT CENT FOR BAMBOO & RATTAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects of the complicated preparation process and poor binding force of the prior art, the present invention has developed a new preparation method for in-situ controllable growth of metal-organic framework materials on the surface of woody materials, which has achieved strong adhesion, uniform adhesion, quantity A novel metal-organic framework / wood composite material with controllable size, mainly including two parts: surface pretreatment of wood material and "two-step" growth of MOF material

Method used

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  • Metal organic framework/wood composite material, and preparation method and application thereof
  • Metal organic framework/wood composite material, and preparation method and application thereof
  • Metal organic framework/wood composite material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0063] (1) Soak the three-year-old Moso bamboo block (L×T×R=20cm×25mm×6mm) in sodium chlorite (NaClO 2 , 80%) solution, the solution was adjusted to pH 4.6 with acetic acid, heated in a water bath (100° C.) for 1 h, and finally the bamboo pieces were washed with deionized water, and vacuum-dried for later use.

[0064] (2) The delignified bamboo pieces were placed in 1 mol / L sodium hydroxide solution and kept at room temperature for 30 minutes, then the samples were taken out and soaked in 1 mol / L sodium chloroacetate solution and kept at room temperature for 30 minutes. Finally, the sample was soaked in 2 g / L acetic acid solution for 10 min, washed with deionized water and dried to obtain pretreated bamboo pieces.

[0065] (3) soak the pretreated bamboo pieces obtained above in a mixed solution of copper nitrate (0.3mol / L) and DMF, ethanol, water (V:V:V=1:1:1), soak at room temperature for 12 hours, remove and drain excess liquid on the surface for later use.

[0066] (4) P...

Embodiment 2

[0071] (1) Soak balsa wood (L×T×R=10mm×10mm×10mm) in a 2% mass fraction of sodium chlorite solution (pH=4.6), heat in a water bath at 100°C for 6 hours, and the sodium chlorite The solution was replaced every 2 hours, and after taking it out, it was cleaned with a mixed solution of ethanol and water, and dried for 6 hours for later use.

[0072] (2) Put the delignified wood block in 1mol / L sodium hydroxide solution, keep it at room temperature for 30min, then take out the sample and soak it in 1mol / L sodium chloroacetate solution, keep it at room temperature for 30min. Finally, the sample was soaked in 2 g / L acetic acid solution for 10 min, washed with deionized water and dried to obtain the pretreated wood block.

[0073] (3) Soak the pretreated wood blocks obtained above in a mixed solution of copper chloride (0.3mol / L) and DMF, methanol, water (V:V:V=1:1:1), soak at room temperature and keep After 12 hours, take out and drain the excess liquid on the surface for later use....

Embodiment 3

[0077] By adjusting the concentration of the metal salt solution, the controllable growth of MOF199 on the surface of the pretreated bamboo is realized, and the specific steps are as follows:

[0078] (1) Dissolve 0.075, 0.15, 0.3, 0.6mol / L copper nitrate trihydrate in 250ml mixed solvent solution of DMF / ethanol / water (V:V:V=1:1:1) respectively to prepare different concentrations of copper solution.

[0079] (2) Subsequently, 10.417 g of trimesic acid was dissolved in 250 ml of a mixed solution of DMF / ethanol / water (V:V:V=1:1:1) to prepare an organic ligand solution.

[0080] (3) Bamboo pieces treated according to steps (1) and (2) of Example 1 for delignification and carboxylation were soaked in copper nitrate trihydrate solutions of four concentrations for 12 hours.

[0081] (4) Take out the four samples respectively, drain them, place them in the trimesic acid solution, continue to stir for 24 hours, take them out and wash them with absolute ethanol and deionized water for...

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Abstract

The invention provides a metal organic framework / wood composite material, and a preparation method and application thereof. A metal organic framework is uniformly distributed on the surface of a wood material after in-situ growth on the surface of the wood material. The composite material disclosed by the invention is formed by efficient and controllable growth of the metal organic framework material on the surface of the wood material in situ. The method comprises the following steps: firstly, carrying out delignification treatment on the surface of the wood material by using an acid and an alkali, then carrying out carboxylation treatment on the delignified wood material, and then soaking the wood material in a metal salt solution and an organic ligand solution in sequence to finally prepare the wood composite material with the metal organic framework uniformly grown on the surface of the wood material. The method is simple and effective, is suitable for various different metal organic frameworks, and is suitable for industrial production. Meanwhile, the metal organic framework / wood composite material prepared by the method has good structural stability and efficient antibacterial performance, and has potential application value in the aspects of drug loading, catalysis, gas adsorption and the like.

Description

technical field [0001] The invention relates to the field of wood material processing, in particular to a metal organic framework / wood composite material and its preparation method and application. Background technique [0002] With the strengthening of the concept of environmental protection, a large number of wooden materials have been applied in the fields of daily necessities, interior decoration materials, and automotive interior parts. Combining metal-organic framework materials (MOF) with traditional wood materials is expected to make it obtain air purification, decomposition VOCs, inhibit harmful bacteria and other functions, improve the comprehensive added value of materials. [0003] Metal-organic framework materials are a class of porous materials with regular crystal structures composed of metal ions and organic ligands, which have potential applications in the fields of gas adsorption, catalysis, and antibacterial. The deposition or growth of metal-organic fram...

Claims

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Application Information

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IPC IPC(8): B27K3/02B27K3/32B27K3/50B27K3/52B27K5/04C08H8/00C08G83/00B01J20/24B01J20/30
CPCB27K3/02B27K3/0207B27K3/32B27K3/50B27K3/52B27K5/04C08H8/00C08G83/008B01J20/226B01J20/24B01J2220/4812B01J2220/4825
Inventor 张融苏明垒张晓凤何莹覃道春
Owner INT CENT FOR BAMBOO & RATTAN
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