Method for preparing smooth graphene film by pulling method

A graphene film and pulling method, applied in the field of nanomaterial preparation, can solve the problems of many wrinkles and large roughness of the graphene film, and achieve the effects of easy functional modification, flat graphene film and low cost.

Inactive Publication Date: 2016-09-21
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are some attempts in the industry to prepare graphene films by the pulling method, the grap

Method used

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  • Method for preparing smooth graphene film by pulling method
  • Method for preparing smooth graphene film by pulling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Weigh 0.02 gram of graphene oxide and dissolve it in 20 milliliters of ultrapure water, and ultrasonicate for 2 hours to obtain a uniform 1.0 milligram per milliliter graphene oxide aqueous solution.

[0037] (2) Measure 21 ml of 98% concentrated sulfuric acid and 9 ml of 30% hydrogen peroxide to prepare a piranha solution, put the glass slide into it and etch it for 2 hours, then take it out and wash it with ethanol and ultrapure water in turn.

[0038] (3) Measure 29 milliliters of toluene and 1 milliliter of 3-aminopropyltriethoxysilane as a solution, put the glass slide etched by the piranha solution into it for 30 minutes, take it out and wash it with toluene in turn , ethanol and ultrapure water.

[0039] (4) Using the pretreated glass slide as the substrate, in the prepared graphene oxide solution, prepare a graphene oxide film by pulling and coating, and the pulling speed is controlled to be 500 nanometers per second.

[0040] (5) Put the glass substrate co...

Embodiment 2

[0044] (1) Weigh 0.03 gram of graphene oxide and dissolve it in 20 milliliters of ultrapure water, and ultrasonicate for 3 hours to obtain a uniform graphene oxide aqueous solution of 1.5 milligrams per milliliter.

[0045] (2) Measure 21 ml of 98% concentrated sulfuric acid and 9 ml of 30% hydrogen peroxide to prepare a piranha solution, put the glass slide into it and etch it for 2 hours, then take it out and wash it with ethanol and ultrapure water in turn.

[0046] (3) Measure 29 milliliters of toluene and 1 milliliter of 3-aminopropyltriethoxysilane as a solution, put the glass slide etched by the piranha solution into it for 30 minutes, take it out and wash it with toluene in turn , ethanol and ultrapure water.

[0047] (4) Using the pretreated glass slide as the substrate, in the prepared graphene oxide solution, a graphene oxide film was prepared by pulling and coating, and the pulling speed was controlled to be 250 nanometers per second.

[0048] (5) Put the glass su...

Embodiment 3

[0051] (1) Weigh 0.01 gram of graphene oxide and dissolve it in 20 milliliters of ultrapure water, and ultrasonicate for 1 hour to obtain a uniform 0.5 milligram per milliliter graphene oxide aqueous solution.

[0052] (2) Measure 21 ml of 98% concentrated sulfuric acid and 9 ml of 30% hydrogen peroxide to prepare a piranha solution, put the glass slide into it and etch it for 2 hours, then take it out and wash it with ethanol and ultrapure water in turn.

[0053] (3) Measure 29 milliliters of toluene and 1 milliliter of 3-aminopropyltriethoxysilane as a solution, put the glass slide etched by the piranha solution into it for 30 minutes, take it out and wash it with toluene in turn , ethanol and ultrapure water.

[0054] (4) Using the pretreated glass slide as the substrate, in the prepared graphene oxide solution, the graphene oxide film was prepared by pulling and coating, and the pulling speed was controlled to be 700 nanometers per second.

[0055] (5) Put the glass subst...

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Abstract

The invention discloses a method for preparing a smooth graphene film by a pulling method. The method comprises the steps: adding graphene oxide into ultrapure water, and carrying out ultrasonic treatment, so as to prepare a uniform graphene oxide aqueous solution; pretreating a glass substrate by sequentially using a piranha solution and a toluene solution of 3-aminopropyl triethoxysilane; submerging the pretreated glass substrate into the prepared graphene oxide aqueous solution, and pulling out the glass substrate at a constant speed, so as to prepare a graphene oxide film; and carrying out reduction on the prepared graphene oxide film by using hydrazine hydrate steam, thereby preparing the graphene film. According to the method, the pulling technology used is simple in operation, low in cost and easy in control, and the prepared graphene film is smooth and uniform and is easily subjected to functional modification.

Description

technical field [0001] The invention belongs to the field of nanometer material preparation, and in particular relates to a method for preparing a flat graphene film by a pulling method. Background technique [0002] Graphene is currently the most ideal two-dimensional nanomaterial and the most dazzling star in the field of nanocarbon materials in the past decade. Its unique two-dimensional crystal structure endows it with a series of unique physical and chemical properties. Films made of graphene have a series of advantages such as good chemical stability, high transparency, strong electrical conductivity, high mechanical strength, and good biocompatibility, and have great application prospects in many fields such as optoelectronic components and tissue culture. It has successfully attracted many research interests in related fields, and is gradually becoming a research hotspot. [0003] Under the attractive research prospect, various coating methods such as vacuum filtrat...

Claims

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Application Information

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IPC IPC(8): C03C17/22C01B31/04
CPCC03C17/22C01P2004/04
Inventor 冯章启聂晓磊李家城
Owner NANJING UNIV OF SCI & TECH
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