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Cu-based organic skeleton-graphene oxide composite porous material and preparation method thereof

A graphene composite and organic framework technology, applied in chemical instruments and methods, and other chemical processes, can solve the problems of large-scale industrial production of difficult metal organic framework materials, high production costs of MOFs materials, and secondary pollution of the environment , to achieve the effect of short reaction time, large preparation amount and excellent adsorption performance

Active Publication Date: 2013-12-11
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the improved microwave method, ultrasonic method, etc. have reduced the reaction time, these synthetic methods all need to consume a large amount of expensive organic solvents, such as dimethylformamide (DMF), diethylformamide (DEF), etc., and Recycling is difficult, resulting in high production costs of MOFs materials. At the same time, it is easy to cause secondary pollution to the environment, involving environmental issues, safety issues, and energy issues. Therefore, these methods are difficult to achieve industrial scale production of metal-organic framework materials.

Method used

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  • Cu-based organic skeleton-graphene oxide composite porous material and preparation method thereof
  • Cu-based organic skeleton-graphene oxide composite porous material and preparation method thereof
  • Cu-based organic skeleton-graphene oxide composite porous material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] Embodiment 1: comparative example

[0035] 1.204g Cu(CH 3 COO) 2 ·H 2O and 0.808g of 1,3,5-benzenetricarboxylic acid were put into a stainless steel ball mill jar, added stainless steel ball mill beads, put into the ball mill, and then ball milled at 1100r / min (42.97Hz) for 30-45min, and the obtained solid powder was successively After washing with ethanol water solution (ethanol: water ratio of 1:1) and chloroform, centrifuge and filter at 5000-7000r / min to obtain the product, put it in an oven for drying at 100-180°C, and mark this sample as HKUST-1.

Embodiment 2

[0036] Example 2: Preparation of Cu-based organic framework-graphene oxide composite porous material

[0037] 1.204g Cu(CH 3 COO) 2 ·H 2 O and 1.144g1,3,5-benzenetricarboxylic acid are put into stainless steel ball mill jar, then add 0.0470g graphene oxide (as Cu(CH 3 COO) 2 ·H 2 O and 2% of the total mass of 1,3,5-benzenetricarboxylic acid), and mix evenly, add stainless steel ball milling beads, put them into the ball mill, and then ball mill for 45min under the condition of 1150r / min (46.75Hz), and the obtained solid powder After washing with ethanol water solution (ethanol: water ratio of 1:1) and chloroform in sequence, the product is extracted by centrifugal filtration at 5000~7000r / min, and the product is dried in an oven at 100~180°C, and the sample is marked as HKUST-GO-2 .

Embodiment 3

[0038] Example 3: Preparation of Cu-based organic framework-graphene oxide composite porous material

[0039] 1.701g Cu(CH 3 COO) 2 ·H 2 O and 0.808g1,3,5-benzenetricarboxylic acid are put into stainless steel ball mill jar, then add 0.125g graphene oxide (as Cu(CH 3 COO) 2 ·H 2 O and 5% of the total mass of 1,3,5-benzenetricarboxylic acid), and mix evenly, add stainless steel ball milling beads, put them into the ball mill, and then ball mill for 60min under the condition of 1100r / min (42.97Hz), and the obtained solid powder After washing with ethanol aqueous solution (ethanol: water ratio of 2:1) and chloroform in sequence, extract the product by centrifugal filtration at 5000-7000r / min, put the product in an oven for drying at 100-180°C, and mark this sample as HKUST-GO-5 .

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Abstract

The invention belongs to the technical field of metal organic skeletal materials, and discloses a Cu-based organic skeleton-graphene oxide composite porous material and a preparation method and application thereof. The preparation method particularly comprises the following steps of uniformly mixing copper acetate, 1,3,5-benzene tricarboxylic acid and graphene oxide; carrying out ball milling; washing; centrifugalizing; and drying to obtain the Cu-based organic skeleton-graphene oxide composite porous material. The preparation method disclosed by the invention has the advantages of short reaction time (only 30 minutes), no solvent, large preparation quantity, low energy consumption, simple operation method, and the like, is a high-efficiency, clean and environment-friendly novel green synthetic method. The obtained Cu-based organic skeleton-graphene oxide composite porous material greatly increases the adsorption capacity on hydrocarbon VOCs (Volatile Organic Compounds) and achieves the purposes that the adsorption capacity on methanol is 2.06 times of the adsorption capacity on the methanol caused by a Na-ZSM molecular sieve, 2.54 times of the adsorption capacity on the methanol caused by flexible-MOF(E), and 1.79 times of the adsorption capacity on the methanol caused by HKUST-1 under the same condition.

Description

technical field [0001] The invention belongs to the technical field of metal organic framework materials, and in particular relates to a Cu-based organic framework-graphene oxide composite porous material and a preparation method and application thereof. Background technique [0002] Metal Organic Frameworks (MOFs for short) are zeolite-like framework materials with special pore structures self-assembled from multi-dentate organic ligands containing oxygen, nitrogen, etc. and transition metal ions. It has the advantages that traditional adsorption materials do not have: (I) high porosity and large specific surface area; (II) high thermal stability; (III) regular pore structure and controllable pore size design; (IV) surface chemical groups Grooming is adjustable. Due to the above unique physical and chemical properties of MOFs materials, it has attractive potential in many fields such as gas storage, gas adsorption and separation, selective and chiral catalysts, microreacto...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30
Inventor 夏启斌苗晋朋李忠李玉洁孙雪娇奚红霞
Owner SOUTH CHINA UNIV OF TECH
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