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Oxidized graphene film, graphene film, preparation method and application thereof

A technology of graphene film and graphene film, applied in the preparation of graphene oxide film and graphene film, the application field of the graphene film can solve the problems of restriction, lack of amphiphilicity, etc., and achieve small thickness, Broad application prospects, high light transmittance effect

Inactive Publication Date: 2013-08-21
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is generally believed that graphene oxide is not amphiphilic, and L-B technology requires that the materials used must be amphiphilic molecules, which greatly restricts the application of L-B technology in the formation of graphene oxide or graphene films.

Method used

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  • Oxidized graphene film, graphene film, preparation method and application thereof
  • Oxidized graphene film, graphene film, preparation method and application thereof
  • Oxidized graphene film, graphene film, preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0040] This example is used to illustrate the graphene oxide film of the present invention and its preparation method.

[0041] Take 1.0ml of an aqueous solution of graphite oxide with a concentration of 0.5mg / ml, add 6.0ml of absolute ethanol, and ultrasonically treat the solution for 10 minutes with a power of 100W to make the solution uniform, and then centrifuge at 10000rpm (11272×g) for 20 minutes. Obtain tan solid; Add the volume ratio of deionized water and absolute ethanol to the tan solid and be the mixed solvent of 1: 6, make the described solid that contains 0.07mg / ml in the solution; With the power ultrasonic treatment of 100W 10 Minutes to make the solution uniform, then centrifuged under the condition of 5000rpm (5636 × g) for 10 minutes to obtain the supernatant, which is the graphene oxide solution. After testing, the graphene oxide sheet thickness in the graphene oxide solution is about 0.9nm; add 30.0ml deionized water to the beaker, slowly drop the graphene ...

Embodiment 2

[0046] This example is used to illustrate the graphene oxide film of the present invention and its preparation method.

[0047] Take 1.0ml of an aqueous solution of graphite oxide with a concentration of 1.5mg / ml, add 6.0ml of absolute ethanol, and ultrasonically treat the solution for 60 minutes with a power of 120W to make the solution uniform, and then centrifuge at 9000rpm (10144×g) for 30 minutes. Obtain tan solid; Add the volume ratio of deionized water and absolute ethanol to the tan solid and be the mixed solvent of 1: 8, make the described solid that contains 0.14mg / ml in the solution; With the power ultrasonic treatment of 120W 60 Minutes to make the solution uniform, then centrifuged under the condition of 4000rpm (4509 × g) for 30 minutes to obtain the supernatant, which is the graphene oxide solution. After testing, the graphene oxide sheet thickness in the graphene oxide solution is about 0.9nm; add 30.0ml deionized water to the beaker, slowly drop the graphene o...

Embodiment 3

[0052] This embodiment is used to illustrate the graphene oxide film of the present invention and its preparation method, as well as the graphene film of the present invention and its preparation method.

[0053] Take 1.0ml of an aqueous solution of graphite oxide with a concentration of 2.0mg / ml, add 8.0ml of absolute ethanol, and ultrasonically treat the solution for 20 minutes with a power of 140W to make the solution uniform, and then centrifuge at 9000rpm (10144×g) for 10 minutes. Obtain tan solid; Add the volume ratio of deionized water and dehydrated alcohol to the tan solid and be the mixed solvent of 1: 10, make the described solid that contains 0.16mg / ml in the solution; With the power ultrasonic treatment of 140W 20 Minutes to make the solution uniform, then centrifuged for 5 minutes under the condition of 4000rpm (4509 × g), to obtain the supernatant, which is the graphene oxide solution. After testing, the graphene oxide sheet thickness in the graphene oxide soluti...

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Abstract

The invention provides an oxidized graphene film, a graphene film, a preparation method and application thereof. The preparation method of the oxidized graphene film comprises: 1) preparing an aqueous solution or organic solvent solution of graphite oxide from graphite by a conventional method; 2) adding an organic solvent or water into the aqueous solution or organic solvent solution of graphite oxide, conducting a first ultrasonic treatment and a first centrifugal treatment, taking the solid, then adding a mixed solvent consisting of water and the organic solvent into the solid, carrying out a second ultrasonic treatment and a second centrifugal treatment, and taking the supernatant, i.e. an oxidized graphene solution; and 3) employing a Langmuir-Blodgett method to add the oxidized graphene solution dropwisely on a water surface so as to form the oxidized graphene film on a water-air interface, and then transferring the oxidized graphene film to a substrate.

Description

technical field [0001] The present invention relates to the preparation method of graphene oxide film and graphene film, be specifically related to a kind of preparation method that adopts Langmuir-Blodgett assembly method to prepare graphene oxide film and graphene film, and graphene oxide prepared according to the preparation method Film and graphene film, and the application of described graphene film. Background technique [0002] Since Geim et al. obtained single-layer graphene by micromechanical exfoliation in 2004, this thinnest known carbon material has become a "star molecule" in its family. Its stable two-dimensional lattice structure, super strong mechanical properties, excellent electrical conductivity and loading capacity have attracted extensive attention and research from the scientific community, and are considered to have a wide range of applications in the fields of micro-nano electronic devices, energy storage, and high-strength materials. Especially in t...

Claims

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Application Information

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IPC IPC(8): C01B31/04C01B32/192C01B32/194C01B32/198
Inventor 韩宝航王涛周鼎承倩怡崔义
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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