Preparation method of aminated sponge/graphene three-dimensional composite structural material

A three-dimensional composite and structural material technology, applied in the direction of fibrous fillers, dyed low-molecular organic compounds, etc., can solve the problems of difficult mass production, limited performance, high cost, etc., to achieve broad application, good amination effect, low cost effect

Inactive Publication Date: 2014-01-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since graphene is difficult to dissolve in solvents such as water, it takes six experimental steps to prepare graphene soluble in ethanol, so the cost is very high, and the cost is very high, and it is difficult to prepare in large quantities
At the same time, the amount of graphene that can be loaded by the immersion method is small, generally only 5% to 10%, which also limits its performance.

Method used

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  • Preparation method of aminated sponge/graphene three-dimensional composite structural material
  • Preparation method of aminated sponge/graphene three-dimensional composite structural material
  • Preparation method of aminated sponge/graphene three-dimensional composite structural material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Sonicate 15ml graphite oxide solution of 0.5mg / ml in an ultrasonic cleaning instrument for 1 hour to obtain a graphene oxide solution; then add 320ul of ethylenediamine and 80ul of ammonia water, and stir; put in (12mm*12mm*12mm) The sponge was left to stand in a water bath at 95°C for about 6 hours; after taking it out, it was freeze-dried for 24 hours. The graphene sponge is wrapped with loose graphene hydrogel, and the graphene content in the sponge is less, and the graphene in the sponge does not form a sheet structure, but is an irregular block. The SEM morphology of the sample prepared in this embodiment can be found in figure 2 shown.

Embodiment 2

[0029] Sonicate 2mg / ml 15ml graphite oxide solution in an ultrasonic cleaning instrument for 1 hour to obtain a graphene oxide solution; then add 320ul of ethylenediamine and 80ul of ammonia water, and stir; put in (12mm*12mm*12mm) The sponge is left to stand in a water bath at 95°C for about 6 hours, and the sponge graphene is wrapped with loose graphene hydrogel; after taking it out, it is freeze-dried for 24 hours. For the samples prepared in this example and the samples prepared by the traditional immersion method, the corresponding optical morphology can be found in figure 1 shown. The obtained three-dimensional graphene is in a regular sheet shape, and the graphene content in the sponge is relatively large, accounting for 25% of the sponge mass, and the amino group content is relatively high, reaching about 10%. image 3 The SEM morphology of the samples prepared for this example.

Embodiment 3

[0031] Sonicate 2mg / ml 15ml graphite oxide solution in an ultrasonic cleaning instrument for 1 hour to obtain a graphene oxide solution; then add 320ul of ethylenediamine and 80ul of ammonia water, and stir; put in (12mm*12mm*12mm) The sponge is left to stand in a water bath at 95°C for about 16 hours, and the sponge graphene is wrapped with a strong graphene hydrogel; after taking it out, it is freeze-dried for 24 hours. The obtained three-dimensional graphene is a regular flake, and the graphene content in the sponge is relatively large, accounting for 33% of the sponge mass. Depend on Figure 4 It can be seen that the surface of the sample prepared in this example has been modified with functional groups.

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Abstract

The invention relates to the field of synthesis of a novel macro nanomaterial, and in particular relates to a preparation method of an aminated sponge/graphene three-dimensional composite structural material. The preparation method specifically comprises the following steps: adding ethylene diamine and ammonia water into aqueous solution of oxidized graphene; immersing a piece of sponge with a certain size in the solution obtained in the previous step; placing the mixed solution at a certain temperature to perform heating treatment; forming the aminated three-dimensional sponge/graphene three-dimensional composite structural material in a self-assembly mode. The material has better mechanical performance and can be machined into various shapes according to the requirements of different types. The method has the advantages of simplicity, low equipment requirement, low raw material price, high product quality and capability of realizing large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of synthesis of novel nanomaterials, in particular to a method for preparing an aminated sponge / graphene three-dimensional composite structure material, which combines the three-dimensional network structure formed by the aminated graphene with the network structure of the sponge. Background technique [0002] Graphene is a new generation of carbon nanomaterials. It is not only the thinnest known material, but also very strong and hard. As a single substance, it can transfer electrons faster than known conductors at room temperature. Physicists Andre Geim and Konstantin Novoselov of the University of Manchester in the United Kingdom successfully separated graphene from graphite in experiments. Experiment" and jointly won the 2010 Nobel Prize in Physics, which triggered a global upsurge of attention to graphene. The application of graphene is subject to various constraints, such as the functionalization of graphene, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08K3/04C08J9/40C09C1/46C09C3/08
Inventor 马杰陈君红周慧明吴利瑞孟涛
Owner TONGJI UNIV
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