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Composite material and preparation method thereof

A technology of composite materials and production methods, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of process and structure complexity, unsuitable separation of salts with small sizes, etc.

Inactive Publication Date: 2019-03-15
CHUNG YUAN CHRISTIAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since the above-mentioned films need to add cationic violin to modify some regions of graphene oxide, the complexity of the process and structure is relatively high.
In addition, since the main body in the film is still graphene oxide, the distance between layers will still be larger than that of a film composed of graphene alone, so that the above film is only suitable for separating salts with large sizes (such as Na 2 SO 4 ), not suitable for separating smaller salts (such as NaCl)

Method used

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  • Composite material and preparation method thereof

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preparation example Construction

[0027] According to an embodiment of the present invention, a method for preparing a composite film comprising graphene and graphene oxide is provided, which includes the following steps: first, adding an appropriate amount of solid graphene oxide to a highly polar solvent to form a concentration 0.01wt% to 1wt% graphene oxide solution. Next, a dispersion treatment is performed on the graphene oxide solution to uniformly disperse the graphene oxide solution. Afterwards, according to graphene oxide (GO):graphene (Gr) is the ratio of 1:0.2 to 1:1 (wt%:wt%), the appropriate amount of solid graphene is added in the graphene oxide solution after uniform dispersion, A composite material solution comprising graphene oxide and graphene is formed. Afterwards, the composite material solution containing graphene oxide and graphene is continuously stirred, so that the composite material solution is uniformly dispersed. Preferably, the stirring temperature (the first temperature) is pref...

Embodiment 1

[0037] First, solid graphene oxide (GO, N002-PDE, Graphene Oxide Powder, Anguqiang Materials Co., Ltd.) is added to water to form a 0.01wt% to 1wt% graphene oxide aqueous solution. Next, the graphene oxide aqueous solution is subjected to ultrasonic shock treatment, so that the graphene oxide aqueous solution is uniformly dispersed. After that, according to the ratio of GO:Gr of 1:0.2, an appropriate amount of solid graphene (Gr, N002-PDR Graphene Powder, Anguqiang Materials Co., Ltd.) was added to the uniformly dispersed graphene oxide aqueous solution to form a mixture containing GO and Gr composite aqueous solution. Afterwards, the composite material aqueous solution containing GO and Gr was continuously stirred by using a homogenizer to uniformly disperse the composite material aqueous solution. Preferably, the stirring temperature (the first temperature) is preferably between 1°C and 50°C, more preferably between 1°C and 25°C. Finally, the composite material aqueous sol...

Embodiment 2-5

[0039] The preparation method of Example 2-5 is roughly the same as that of Example 1, but the ratio of GO:Gr in the composite material aqueous solution in Example 2-5 is adjusted to 1:0.4, 1:0.6, 1:0.8 and 1:1.

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Abstract

A method of preparing a composite material includes the steps of: (a) dispersing graphene material and graphene oxide material in a solution, where the weight ratio of the graphene material to the graphene oxide material is between 0.2-1; and (b) after step (a), stirring the solution at a first temperature ranging between 1 DEG C and 25 DEG C. The composite material manufacturing method can reducethe interlayer spacing of the composite film and suppress the wet swelling phenomenon. Therefore, if the above composite material is used in the field of seawater separation and desalination, a salthaving a large size and a salt having a small size can have a good salt separation rate.

Description

technical field [0001] The invention provides a composite material and a preparation method thereof, especially a composite material comprising graphene and graphene oxide and having good dispersibility in a solution and a preparation method thereof. Background technique [0002] Graphene is a film composed of carbon atoms presenting a two-dimensional honeycomb lattice. Due to the strong force between the carbon atoms that make up graphene and its stable structure, even if graphene is only one atom thick, its material is still strong. Tough and strong. In addition to the advantages of mechanical strength, graphene has excellent thermal conductivity, electrical conductivity, light transmission and other properties, so its application range is quite wide. For example, graphene can be used in communication systems, solar panels, batteries, etc. materials, touch panels and other electronic devices, and also have great application potential in fields such as biomedical engineeri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/182C01B32/198
CPCC01B2204/32C01P2002/82C01P2004/03C01P2002/72C01B2204/28C01B32/194C01B2204/20C01B2204/04C01B32/198
Inventor 洪维松萧伊珍胡蒨杰蔡惠安李魁然赖君义
Owner CHUNG YUAN CHRISTIAN UNIVERSITY