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A spherical Cu-based metal-organic framework-graphene oxide composite material and its preparation method

A graphene composite, organic framework technology, applied in the directions of alkali metal compounds, alkali metal oxides/hydroxides, chemical instruments and methods, etc., can solve the problems of decreased adsorption and separation performance, destruction of specific surface area, complicated process and other problems, To achieve the effect of improving adsorption performance, improving water resistance, and increasing micropore volume

Active Publication Date: 2017-02-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Rainer Ostermann et al. used electrospinning to make ZIF-8 into fibrous materials, and found that the pores were less blocked and still had a larger specific surface area (Ostermann R, Cravillon J, Weidmann C, Wiebcke M, SmarslyBM. Metal-organic framework nanofibers via electrospinning[J].Chemicalcommunications.2011,47(1):442-4), but the process is complex and requires high equipment
[0005] To sum up, the existing MOFs material molding technology, in order to strengthen the mechanical strength, adds a large amount of adhesives and other substances, at the expense of sacrificing the pore structure, reducing the specific surface area or partially destroying the skeleton structure, resulting in a significant decline in its adsorption and separation performance.

Method used

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  • A spherical Cu-based metal-organic framework-graphene oxide composite material and its preparation method
  • A spherical Cu-based metal-organic framework-graphene oxide composite material and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0038] Preparation of Cu-based organic framework-graphene oxide composite porous material powder:

[0039] 1.204g Cu(CH 3 COO) 2 ·H 2 O and 1.144g 1,3,5-benzenetricarboxylic acid are put into the stainless steel ball mill jar, then add the graphene oxide of 0.0470g, add the stainless steel ball mill beads, put into the ball mill, then under the condition of 1150r / min (46.75Hz) After ball milling for 45 minutes, the obtained solid powder was washed with ethanol aqueous solution (the volume ratio of ethanol and water was 1:1) and chloroform in sequence, and centrifugally filtered at 7000r / min to obtain the product, which was dried in an oven at 180°C to obtain the Cu Based organic framework-graphene oxide composite porous material powder, and mark this powder as HG-1.

Embodiment 2

[0041] Preparation of Cu-based organic framework-graphene oxide composite porous material powder:

[0042] 1.701g Cu(CH 3 COO) 2 ·H 2 O and 0.808g 1,3,5-benzenetricarboxylic acid are put into a stainless steel ball mill jar, then add 0.125g graphene oxide, add stainless steel ball mill beads, put them in a ball mill, and then ball mill at 1100r / min (42.97Hz) After 45 minutes, the obtained solid powder was washed with ethanol aqueous solution (the volume ratio of ethanol and water is 2:1) and chloroform, and then centrifugally filtered at 5000r / min to obtain the product, which was dried in an oven at 100°C to obtain the Cu-based Organic framework-graphene oxide composite porous material powder, and mark this powder as HG-2.

Embodiment 3

[0044] Preparation of Cu-based organic framework-graphene oxide composite porous material powder:

[0045] 1.204g Cu(CH 3 COO) 2 ·H 2 O and 0.808g 1,3,5-benzenetricarboxylic acid are put into a stainless steel ball mill jar, then 0.161g graphene oxide is added, stainless steel ball mill beads are added, put into a ball mill, and then ball milled for 30min at 1230r / min (50Hz) , the obtained solid powder was washed with ethanol aqueous solution (the volume ratio of ethanol and water is 1:1) and chloroform in sequence, and then centrifugally filtered at 6000r / min to obtain the product, which was dried in an oven at 160°C to obtain the Cu-based organic compound. Skeleton-graphene oxide composite porous material powder, and mark this powder as HG-3.

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PUM

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Abstract

The invention belongs to the technical field of metal organic skeleton material forming and discloses a preparation method of the spherical forming Cu base metal organic skeleton-graphene oxide composite material. The method comprises the following specific steps: proportionally mixing water, methyl hydroxypropyl cellulose and silicate resin with Cu base organic skeleton-graphene oxide composite porous material powder which is synthesized by using a mechanical ball milling method so as to obtain a mixture, adding the mixture into a pelletizer, pelleting, and drying, so as to obtain the spherical forming Cu base metal organic skeleton-graphene oxide composite material. The spherical forming Cu base metal organic skeleton-graphene oxide composite material prepared by using the preparation method has the advantages of relatively large surface area, open pore structure and the like and has the special appearance, volume, mechanical strength, toughness and water resistance which are necessary for an actual industrial application.

Description

technical field [0001] The invention belongs to the technical field of forming metal organic framework porous materials, and in particular relates to a spherical Cu-based metal organic framework-graphene oxide composite material and a preparation method thereof. Background technique [0002] Metal Organic Frameworks (MOFs for short) are multidimensional network zeolite-like framework materials self-assembled by organic ligands containing oxygen or nitrogen elements and transition metal ions through metal-ligand complexation. MOFs materials have unique physical and chemical properties, such as high porosity, large specific surface area, high thermal stability, regular pore structure, controllable pore size design, adjustable surface chemical group modification, and unsaturated metal coordination. It has attractive potential application prospects in many fields such as gas storage, gas adsorption and separation, selective and chiral catalysts, microreactors, molecular recognit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30
Inventor 夏启斌苗晋朋李玉洁李忠奚红霞
Owner SOUTH CHINA UNIV OF TECH
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