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Reduced oxide graphene-beta-cyclodextrin aerogel adsorbing material and preparation method thereof

An adsorption material and cyclodextrin technology, applied in the field of environmental science, can solve the problems of difficult separation and recycling of adsorbents, and achieve the effects of simple and feasible preparation process, green preparation process and low price

Inactive Publication Date: 2017-12-15
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve technical problems such as difficult separation and difficult recycling of existing adsorbents, the purpose of the present invention is to prepare a reduced graphene oxide-beta-cyclodextrin airgel adsorption material

Method used

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  • Reduced oxide graphene-beta-cyclodextrin aerogel adsorbing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A reduced graphene oxide-beta-cyclodextrin airgel adsorption material is prepared by the following steps:

[0023] 20 mL of 2 mg / mL graphite oxide solution was sonicated for 2 h to prepare graphene oxide, and 1 g of β-cyclodextrin (mass ratio of β-cyclodextrin to graphene oxide was 25:1) and 400 μL of ammonia water (mass fraction of 25 %), and stirred at room temperature for 0.5h. Then add ascorbic acid (mass ratio to graphene oxide is 1:1), and ultrasonically react for 15 minutes. Take 2.5mL of the above solution in a 5mL beaker, put it in a water bath, and react in a water bath at 90°C for 12h to prepare a hydrogel. The hydrogel was fully soaked with deionized water to remove the remaining ascorbic acid, and finally freeze-dried for 3 days to obtain the reduced graphene oxide-beta-cyclodextrin aerogel. figure 1 IR spectrum of the prepared RGO-beta-CD airgel.

Embodiment 2

[0025] An airgel prepared in Example 1 was put into an Erlenmeyer flask containing ciprofloxacin at a concentration of 100 mg / L. At 25°C, put the Erlenmeyer flask into a shaker for 4 days, and finally calculate the adsorption capacity to be 148.38mg / g. The airgel did not loosen before and after adsorption.

[0026] In summary, the RGO-beta-CD airgel prepared by the present invention is light in weight, high in hardness, easy to separate from water, does not cause secondary pollution to water body, and has strong practicability.

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Abstract

The invention discloses a reduced oxide graphene-beta-cyclodextrin aerogel adsorbing material and a preparation method thereof. The specific preparation method disclosed by the invention comprises the following steps: firstly, carrying out ultrasonic treatment on a graphite oxide solution to prepare oxide graphene; secondly, adding beta-cyclodextrin and ammonia water into the oxide graphene and then stirring at room temperature; thirdly, adding ascorbic acid and then carrying out ultrasonic reaction; finally, putting the obtained mixture into a water bath kettle, carrying out water bath reaction, and carrying out freeze drying after the reaction is ended, thus obtaining the oxide graphene-beta-cyclodextrin (RGO-beta-CD) aerogel. The preparation method disclosed by the invention has the beneficial effects of simple preparation technology, easiness in controlling conditions, low cost and suitability for large-scale and batch production.

Description

technical field [0001] The invention relates to a reduced graphene oxide-beta-cyclodextrin airgel adsorption material and a preparation method thereof, belonging to the field of environmental science and technology. Background technique [0002] Water is one of the most precious resources for human beings, and our life cannot be separated from water. However, with the development of industrialization, more and more pollutants appear in groundwater and surface water, seriously polluting the quality of water bodies, threatening human health and destroying the ecological balance. The technology of water treatment has been mature, but scientists have proved that the adsorption method is a simple, low-cost and effective method. Contents of the invention [0003] In order to solve technical problems such as difficult separation and difficult recycling of existing adsorbents, the purpose of the present invention is to prepare a reduced graphene oxide-beta-cyclodextrin airgel ads...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28
CPCB01J20/24B01J20/20B01J20/28047C02F1/288
Inventor 于飞陈德贤李勇
Owner SHANGHAI INST OF TECH
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