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Preparation method for interface self-assembly sulfonation graphene film

A technology of sulfonated graphene and self-assembly, applied in the direction of graphite, etc., can solve the problems of high production equipment requirements, inability to recycle, waste, etc., and achieve the effect of good cycle life performance

Inactive Publication Date: 2014-07-16
JIANGNAN GRAPHENE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in the prior art, when using the interface self-assembly process to prepare graphene oxide films, the requirements for the amount of self-assembly materials are relatively high and cannot be recycled and easily cause waste, or the requirements for production equipment are relatively high. high

Method used

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  • Preparation method for interface self-assembly sulfonation graphene film
  • Preparation method for interface self-assembly sulfonation graphene film
  • Preparation method for interface self-assembly sulfonation graphene film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Load 40ml of deionized water in the beaker, and then carefully place 10ml of n-pentane on top of the deionized water to establish an oil-water interface;

[0030] 10ml is injected into the aqueous phase of oil-water interface with methanol dispersed sulfonated graphene solution, and the concentration of sulfonated graphene in the sulfonated graphene solution is 0.05mg / ml, and the injection velocity of sulfonated graphene solution is 0.2ml / min, 20 minutes after the injection of the sulfonated graphene solution, use a syringe to suck away most of the oil layer, and let the rest volatilize naturally. The film is exposed, and the state of the film is as attached Figure 7 As shown in "e figure" in , the sulfonated graphene film completely covers the entire beaker;

[0031] The quartz substrate was cleaned twice with ethanol and three times with acetone, and then pretreated with a mixed solution of sulfuric acid and hydrogen peroxide at a volume ratio of 4:1 for 30 minutes,...

Embodiment 2

[0035] Load 50ml of deionized water in the beaker, and then carefully place 12ml of n-pentane on top of the deionized water to establish an oil-water interface;

[0036] The sulfonated graphene solution that 12ml is dispersed with ethanol is injected in the water phase of oil-water interface, and the concentration of sulfonated graphene in the sulfonated graphene solution is 0.075mg / ml, and the injection velocity of sulfonated graphene solution is 0.4ml / min, 30 minutes after the injection of the sulfonated graphene solution, use a syringe to absorb most of the oil layer, and let the rest volatilize naturally. The film is exposed;

[0037] The quartz substrate was cleaned twice with ethanol and three times with acetone, and then pretreated with a mixed solution of sulfuric acid and hydrogen peroxide at a volume ratio of 4:1 for 30 minutes, and then vertically immersed in the self-assembled sulfonated graphite Graphene film solution, and then vertically pulled, the speed of imm...

Embodiment 3

[0040] The rest of the steps are the same as in Example 1, only the "quartz substrate" is replaced with a "slide glass", and finally the state of the transferred single-layer sulfonated graphene film is obtained as attached Figure 5 shown.

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Abstract

The invention relates to a preparation method for an interface self-assembly sulfonation graphene film, in particular to good dispersing solvent which can help graphene to assemble by self. The graphene is introduced into an assembling interface so as to design a novel oil-water interface self-assembly method. The advantage of simple requirement of the traditional oil-water interface self-assembly system equipment is combined with the advantage of few requirements on the assembling material by an air-water interface self-assembly system to assemble the graphene film. According to the preparation method, dispersed sulfonation graphene solution is injected into an established oil-water interface water phase, sulfonation graphene is subjected to self-assembling in the oil-water interface, a target substrate is vertically dipped into solution and is then vertically lifted after an oil phase is removed, the sulfonation graphene film is transferred to the target substrate, and the preparation method aims to be used for a transparent conductive film and a film supercapacitor.

Description

technical field [0001] The invention belongs to the field of film preparation by adopting an interface self-assembly process, in particular to a preparation method of an interface self-assembly sulfonated graphene film. Background technique [0002] At present, there are two main methods for preparing graphene films: 1) using epitaxial growth method or vapor deposition method to prepare graphene films on specific substrates; 2) using soft chemical methods to assemble graphene sheets from bottom to top. Graphene thin film (referring specifically to Geim A K, Novoselov K S.Nature materials, 2007,6,3:183-191. and Li L, Chen S, Wang X, et al.Energy&Environmental Science, 2012,5,3:6040- 6046.). The former method can achieve large-scale growth of uniform single-layer or several-layer graphene films, but this method has relatively high requirements for equipment and experimental conditions, and cannot be used on a large scale; and in the process of transferring graphene films. Et...

Claims

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Application Information

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IPC IPC(8): C01B31/04C01B32/21
Inventor 贾宝平叶恩洲王秋泽丁建宁
Owner JIANGNAN GRAPHENE RES INST
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