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Preparation method of graphene roll

A graphene roll and graphene technology, applied in the field of graphene, can solve the problems of violent reaction, low yield and high cost, and achieve the effect of simple operation, mild reaction and low cost

Active Publication Date: 2013-03-20
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Claims
  • Application Information

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Problems solved by technology

The microscopic explosion method does not need to operate under inert conditions such as helium or liquid nitrogen, and can also avoid the generation of toxic sm

Method used

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  • Preparation method of graphene roll

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Example Embodiment

[0022] The invention provides a kind of preparation method of graphene roll, comprising:

[0023] Mixing an organic solution of aniline with an aqueous solution of graphene oxide containing an initiator and reacting under stirring conditions to obtain an intermediate product;

[0024] After the intermediate product is dried and heated to react, graphene rolls are obtained.

[0025] The invention mixes and reacts the organic solution of aniline and the graphene oxide aqueous solution containing the initiator to obtain the intermediate product. The present invention first dissolves aniline in the organic solution to obtain the organic solution of aniline; dissolves the initiator in the graphene oxide aqueous solution to obtain the graphene oxide aqueous solution containing the initiator; the mass concentration of the aniline in the organic solution is n, the n preferably satisfies the following conditions: 0g / L

Example Embodiment

[0035] Example 1

[0036] 10mL concentration is the n-amyl alcohol solution of 10g / L aniline, 0.1g ammonium persulfate is dissolved in the graphene oxide aqueous solution that 500mL concentration is 0.3g / L, after the above-mentioned graphene oxide aqueous solution and the n-amyl alcohol solution of aniline are mixed Stir the reaction at 1000r / min for 10 hours to obtain the product in the reaction. After repeated washing with absolute ethanol and deionized water, the product in the reaction is freeze-dried and annealed at 300°C for 5 hours to prepare graphene rolls. .

[0037] The result is as figure 1 and figure 2 as shown, figure 1 The transmission electron microscope figure of the graphene roll that is prepared for the embodiment of the present invention 1, by figure 1 It can be seen that the nitrogen-doped graphene sheet structure obtained in the present invention is complete. figure 2 It is the TEM selected area electron diffraction pattern of the graphene roll prepar...

Example Embodiment

[0038] Example 2

[0039] 10mL concentration is the n-butanol solution of 0.1g / L aniline, 0.2mg ferric chloride is dissolved in 100mL concentration and is the graphene oxide aqueous solution of 0.01g / L, after the above-mentioned graphene oxide aqueous solution is mixed with the n-amyl alcohol solution of aniline Stir the reaction at 300r / min for 24 hours to obtain the product in the reaction. After repeated washing with absolute ethanol and deionized water, the product in the reaction is freeze-dried and annealed at 1000°C for 0.5 hours to prepare graphene roll.

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Abstract

The invention provides a preparation method of a graphene roll. The preparation method comprises the following steps of: mixing an organic solution of aniline and an oxidized graphene water solution containing an initiator, and performing a reaction under the condition of stirring to obtain an intermediate product; and drying the intermediate product, and then heating the dried intermediate product for reacting to obtain the graphene roll. According to the preparation method provided by the invention, the organic solution of the aniline and the oxidized graphene water solution containing the initiator are mixed, and the aniline is initiated at an interface between an organic phase and an aqueous phase to be polymerized on the surface of the oxidized graphene; and in the drying process, the surface tension of the oxidized graphene changes, and the oxidized graphene spontaneously curls while being reduced into the graphene by heating, so as to form the graphene roll. The preparation method provided by the invention is mild in reaction, simple to operate, lower in cost and convenient to popularize and apply. Indicated by experimental results, the graphene roll prepared by using the preparation method is complete in structure and better in quality.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a method for preparing graphene rolls Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a planar film composed of carbon atoms with sp2 hybrid orbitals forming a hexagonal honeycomb lattice, a two-dimensional material with a thickness of only one carbon atom. Graphene is very easy to agglomerate, and it is envisioned to roll up graphene flakes to form a coiled nanocarbon material similar to carbon nanotubes between one-dimensional and two-dimensional—graphene scrolls. [0003] Compared with carbon nanotubes, graphene rolls, as a new type of graphene material, have unclosed edges, easy regulation of diameter spacing, and high specific surface area; The resulting threshold effect can significantly improve the catalytic performance of itself and the catalytic performance of the carrier system formed as a c...

Claims

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Application Information

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IPC IPC(8): C01B31/04B82Y40/00C01B32/184
Inventor 周旭峰刘兆平王国华郑超
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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