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MOF (metal-organic frameworks) porous foam material and preparation method thereof

A technology of porous foam materials and channels, applied in the field of porous foam materials and their preparation, can solve the problems of easy shrinkage and deformation of foam materials, poor cycle performance of composite materials, uneven distribution of adsorbed molecules, etc., and the process is simple, fast, environmentally friendly and low cost Inexpensive, the effect of increasing the specific surface area

Active Publication Date: 2018-03-06
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at problems such as uneven distribution of adsorption molecules and weak adsorption force of the existing porous foam material, and the foam material is easy to shrink and deform, which leads to poor cycle performance of the composite material, etc., and provides a MOF porous foam material and a preparation method thereof

Method used

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  • MOF (metal-organic frameworks) porous foam material and preparation method thereof
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  • MOF (metal-organic frameworks) porous foam material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0037]A kind of preparation method of MOF porous foam material, comprises the steps,

[0038] (1) Preparation of CMC gel: first mix 1.4667g CMC with 10mLH 2 Add O to a 250mL round-bottomed flask several times, seal the device and place it in a water bath at 50°C for 20 minutes with mechanical stirring;

[0039] (2) Preparation of BTC solution: Take 1.1550g of BTC and dissolve it in 20mL of absolute ethanol, sonicate it for 6 minutes to fully dissolve it, and record it as solvent A;

[0040] (3) Cu(OAc) 2 Solution preparation: Take 0.5775g Cu(OAc) 2 Dissolve in 20mLH 2 Add 1mL of glacial acetic acid to O, and ultrasonically dissolve it for 3min, and record it as solution B;

[0041] (4) Preparation of MOF porous foam material: solution A was added dropwise to the CMC solution, stirred mechanically for 30 min, then solution B was slowly added dropwise to the previous solution, and stirred mechanically for 4 h. Open the plastic wrap, and volatilize the organic solvent in the...

Embodiment 2

[0047] A kind of preparation method of MOF porous foam material, comprises the steps,

[0048] (1) Preparation of CMC gel: first mix 14.667g CMC with 100mL H 2 Add O to a 250mL round-bottomed flask several times, seal the device and place it in a water bath at 53°C for 30 minutes with mechanical stirring;

[0049] (2) Preparation of BTC solution: Dissolve 11.550g of BTC in 200mL of absolute ethanol, and ultrasonically dissolve it for 5 minutes, which is recorded as solvent A;

[0050] (3) Cu(OAc) 2 Solution preparation: Take 5.250g Cu(OAc) 2 Soluble in 200mLH 2 Add 10mL of glacial acetic acid to O, and ultrasonically dissolve it for 4 minutes, and record it as solution B;

[0051] (4) Preparation of MOF porous foam material: solution A was added dropwise to the CMC solution, stirred mechanically for 30 min, then solution B was slowly added dropwise to the previous solution, and stirred mechanically for 4 h. Open the plastic wrap, and volatilize the organic solvent in the ...

Embodiment 3

[0057] A kind of preparation method of MOF porous foam material, comprises the steps,

[0058] (1) Preparation of CMC gel: first mix 1.4667g CMC with 10mL H 2 Add O to a 250mL round-bottomed flask several times, seal the device and place it in a water bath at 55°C for 40 minutes with mechanical stirring;

[0059] (2) Preparation of BTC solution: Dissolve 1.1550g of BTC in 18mL of absolute ethanol, and ultrasonically dissolve it for 4 minutes, which is recorded as solvent A;

[0060] (3) Cu(OAc) 2 Solution preparation: take 0.5775g Cu(OAc) 2 Dissolve in 20mLH 2 Add 1.5mL of glacial acetic acid to O, and ultrasonically dissolve it for 5 minutes, and record it as solution B;

[0061] (4) Preparation of MOF porous foam material: solution A was added dropwise to the CMC solution, stirred mechanically for 30 min, then solution B was slowly added dropwise to the previous solution, and stirred mechanically for 4 h. Open the plastic wrap, and volatilize the organic solvent in the ...

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Abstract

The invention discloses an MOF (metal-organic frameworks) porous foam material and a preparation method. The preparation method comprises the following steps: adding CMC (carboxyl methyl cellulose) and H2O into a vessel; mechanically stirring to obtain a CMC gel; dissolving trimesic acid into absolute ethyl alcohol; ultrasonically dissolving to obtain a solvent A; dissolving Cu(OAc2) into H2O; then adding glacial acetic acid; ultrasonically to fully dissolve, thereby obtaining a solution B; dropwise adding the solution A to the CMC gel; mechanically stirring; slowly dropwise adding the solution B to the previous solution; continuously stirring until an organic solvent is volatilized; pouring the mixed solution into a Teflon die in which a bevel metal sheet is inserted; sealing; feeding into a vessel in which liquid nitrogen is charged; quickly transferring into a freezing drying machine after rapid freezing; and then moving out to obtain the MOF porous foam material. According to the method, the properties of the pure CMC are improved through BTC; MOF crystals are uniformly dispersed in the mixed solution through the in-situ growth; the ice concentrating freezing method is carriedout, so that the adhesion adsorption capacity and the uniform dispersity of the MOF composite material on a net-shaped structure can be obviously improved, and meanwhile, heavy metal ions in organic wastewater can be removed.

Description

technical field [0001] The invention belongs to the field of novel functional materials, and in particular relates to a porous foam material and a preparation method thereof. Background technique [0002] Metal-Organic Frameworks, or MOF for short, is an organic-inorganic hybrid material with intramolecular pores formed by the self-assembly of organic ligands and metal ions or clusters through coordination bonds. [0003] Metal-organic framework (MOF) materials are a new class of nanoporous materials. How to develop green and convenient preparation methods is of great significance for their industrial applications. With the increasing variety of MOF materials and the gradual rise of composite MOF materials, MOF materials will have immeasurable application prospects. [0004] Since the general MOF crystals are powdery and difficult to form, this limits the application of MOF materials in adsorption, so this has become one of the problems to be solved in industrial production...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/226B01J20/28045B01J20/28064B01J20/28083B01J20/3057C02F1/285C02F2101/20
Inventor 赵祯霞崔馨方孙晓丹魏雅男赵钟兴
Owner GUANGXI UNIV
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