Hydroxycucurbituril/graphene oxide composite material and preparation method thereof

The technology of a hydroxyl cucurbit ring and a composite material is applied in the field of materials, and can solve the problems of complicated operation and complicated preparation method, and achieve the effects of simple preparation method, convenient operation and short production cycle.

Inactive Publication Date: 2017-03-15
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a hydroxyl cucurbit ring / graphene oxide composite material and a preparation method thereof in view of the complicated preparation method of the existing hydroxy cucurbit ring-based composite material
The method has the advantages of simple operation, convenience, and quickness, and can effectively solve the problem of cumbersome operation existing in existing methods and meet the needs of factory production.

Method used

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  • Hydroxycucurbituril/graphene oxide composite material and preparation method thereof
  • Hydroxycucurbituril/graphene oxide composite material and preparation method thereof
  • Hydroxycucurbituril/graphene oxide composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] (1) Graphene oxide was prepared by the Hummers method

[0043] Under ice bath, in a three-neck flask, stir and mix 3 g of flake graphite and 90 mL of concentrated sulfuric acid, then add 9 g of potassium permanganate in batches (10 additions), stir for 1 h, and then heat up the solution Keep at 35 °C for 2 h, then add 250 mL of deionized water to the system, then raise the temperature of the solution to 95 °C, keep for 30 min, then add 10 mL of hydrogen peroxide to the solution, and centrifuge the obtained solution. The solid obtained by centrifugation was washed 5 times with 5% hydrochloric acid, and finally, washed once with ethanol, and the product was dried in an oven at 50 °C for later use to obtain graphene oxide.

[0044] (2) Preparation of hydroxyl cucurbit ring / graphene oxide composites

[0045] 0.25 g of graphene oxide prepared by the Hummers method was ultrasonically dispersed in 150 mL of DMSO until completely dispersed and exfoliated to obtain the first so...

Embodiment 2

[0049] 0.25 g of graphene oxide prepared by the Hummers method was ultrasonically dispersed in 150 mL of DMF until it was completely dispersed and exfoliated to obtain the first solution.

[0050] Weigh 0.1 g of hydroxyl six-membered cucurbit rings and add them into the first solution, and stir at room temperature for 24 h to obtain the second solution. The second solution is subjected to centrifugation, and the separated solid is washed and dried to obtain a hydroxyl cucurbit ring / graphene oxide composite material.

[0051] Elemental analysis found that in the hydroxyl cucurbit ring / graphene oxide composite material prepared in this example, the proportion of the six-membered hydroxy cucurbit ring was about 5.0%.

Embodiment 3

[0053] 0.25 g of graphene oxide prepared by the Hummers method was ultrasonically dispersed in 150 mL of DMSO until completely dispersed and exfoliated to obtain the first solution.

[0054] Weighed 0.25 g of hydroxyl six-membered cucurbit rings and added them to the first solution, and stirred at room temperature for 24 h to obtain the second solution. The second solution is subjected to centrifugation, and the separated solid is washed and dried to obtain a hydroxyl cucurbit ring / graphene oxide composite material.

[0055] Elemental analysis found that in the hydroxyl cucurbit ring / graphene oxide composite material prepared in this example, the proportion of the six-membered hydroxy cucurbit ring was about 10.5%.

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Abstract

The invention discloses a hydroxycucurbituril / graphene oxide composite material and a preparation method thereof and aims to solve the problem that an existing hydroxycucurbituril-based composite material preparation method is tedious. At room temperature, hydroxycucurbituril and graphene oxide undergo in situ synthesis in an organic solvent to prepare the hydroxycucurbituril / graphene oxide composite material. The method is simple, convenient and fast to operate, and can help effectively solve the problem that existing methods are tedious to operate, and meets the requirements of industrialized production. In the prepared composite material, hydroxycucurbituril and graphene oxide have hydrogen bond interaction, and cucurbitnuril is fixed in the molecular form on the surface of graphene oxide through a hydrogen bond and has a good ability of adsorbing uranyl ions. The preparation method is simple and fast and is convenient to operate. The prepared material has a good ability of adsorbing uranyl ions and has latent application value.

Description

technical field [0001] The invention relates to the field of materials, especially the field of functional composite materials and their preparation, specifically a hydroxyl cucurbit ring / graphene oxide composite material and a preparation method thereof. The invention provides a hydroxyl cucurbit ring / graphene oxide composite material with better uranyl ion adsorption capacity, and provides a simple and in-situ synthesis method for the hydroxyl cucurbit ring / graphene oxide composite material. Background technique [0002] Cucurbit[n]urils (cucurbit[n]urils, CB[n], n=5~10) are a new type of high-symmetry macrocyclic compounds that have attracted much attention after crown ethers, cyclodextrins and calixarenes. There is a hydrophobic cavity inside the melon ring, which can selectively accommodate size and shape-matched organic molecules, small gas molecules and other small guest molecules according to the size of the cavity. Therefore, cucurbit rings have been widely used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30
CPCB01J20/20B01J20/22
Inventor 邵浪任一鸣
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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