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Preparation method and application of modified graphene oxide

A technology of stone oxide and graphene, applied to chemically modified graphene oxide, using halogenated hydrocarbons to modify graphene oxide to prepare a certain number of carbon chains on the surface, preparation, and modified graphene oxide, which can solve the preparation method conditions Harshness, poor stability of modified graphene oxide, etc., to achieve the effect of short reaction time, simple preparation method and mild reaction conditions

Inactive Publication Date: 2016-11-16
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the defects in the prior art that the preparation method of graphene oxide that can be stably dispersed or dissolved in an organic solvent is harsh and the stability of the obtained modified graphene oxide is not good, the present invention provides a modified oxidized Graphene, which can be prepared under mild conditions

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  • Preparation method and application of modified graphene oxide
  • Preparation method and application of modified graphene oxide
  • Preparation method and application of modified graphene oxide

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Embodiment 1

[0065]Graphene oxide was prepared by Hummers, and the prepared graphene oxide was dispersed in deionized water to prepare a 1 mg / mL dispersion. The prepared graphene oxide dispersion was mixed with sodium hydroxide solution, the concentration of sodium hydroxide solution was 1 mmol / L, and the mixed solution was sonicated for 10 min. Then add tetraoctyl ammonium bromide, the content of tetraoctyl ammonium bromide and the content ratio of graphene oxide are 2:1, then add hexadecane bromide, and its content ratio with graphene oxide is 10:1 . The homogeneously mixed mixed solution was placed in an oil bath, heated and stirred, and the temperature was kept at 100° C. for 2 h. After the reaction is complete, cool to room temperature, add 100mL of chloroform, fully shake the mixed solution and transfer it to a separatory funnel to stand still, separate the organic phase after standing, remove the insoluble matter by suction filtration, and then concentrate the mixed solution to 10m...

Embodiment 2

[0068] Graphene oxide was prepared by using Hummers, and the prepared graphene oxide was dispersed in deionized water to prepare a 1 mg / mL dispersion. The prepared graphene oxide dispersion was mixed with sodium hydroxide solution, the concentration of sodium hydroxide solution was 1 mmol / L, and the mixed solution was sonicated for 10 min. Then add tetraoctyl ammonium bromide, the content of tetraoctyl ammonium bromide and the content ratio of graphene oxide are 2:1, then add tetradecyl bromide, and its content ratio with graphene oxide is 10:1 . The homogeneously mixed mixed solution was placed in an oil bath, heated and stirred, and the temperature was kept at 100° C. for 2 h. After the reaction is complete, cool to room temperature, add 100mL of chloroform, fully shake the mixed solution and transfer it to a separatory funnel to stand still, separate the organic phase after standing, remove the insoluble matter by suction filtration, and then concentrate the mixed solution...

Embodiment 3

[0070] Graphene oxide was prepared by Hummers, and the prepared graphene oxide was dispersed in deionized water to prepare a 1 mg / mL dispersion. The prepared graphene oxide dispersion was mixed with sodium hydroxide solution, the concentration of sodium hydroxide solution was 1 mmol / L, and the mixed solution was sonicated for 10 min. Then add tetraoctyl ammonium bromide, the content of tetraoctyl ammonium bromide and the content ratio of graphene oxide are 2:1, then add dodecyl bromide, and its content ratio with graphene oxide is 10:1 . The homogeneously mixed mixed solution was placed in an oil bath, heated and stirred, and the temperature was kept at 100° C. for 2 h. After the reaction is complete, cool to room temperature, add 100mL of chloroform, fully shake the mixed solution and transfer it to a separatory funnel to stand still, separate the organic phase after standing, remove the insoluble matter by suction filtration, and then concentrate the mixed solution to 10mL ...

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Abstract

The invention relates to a modified graphene oxide, the surface of the modified graphene oxide is modified with carbon chains. The preparation method of the modified graphene oxide is a method comprising the following steps: (1) mixing the graphene oxide dispersion with an alkali solution to obtain a graphene carboxylate solution; (2) adding the graphene oxide obtained in step (1) A phase transfer catalyst and a halogenated hydrocarbon are added to the carboxylate solution to react, and then an organic solvent is added to disperse, and after insoluble matter is removed, the modified graphene oxide is obtained by concentrating. The preparation method of the modified graphene oxide provided by the present invention is simple, the reaction conditions are mild, and the reaction can be realized in one step without separating intermediate products; the reaction time is short and the efficiency is high; the modified graphene oxide prepared by the present invention can be stably dispersed in in various organic solvents.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and mainly relates to a modified graphene oxide, a preparation method and a use thereof, in particular to a chemically modified graphene oxide, a preparation method and a use thereof, especially to a kind of modified graphite oxide using a halogenated hydrocarbon A method for preparing alkenes with a certain number of carbon chains on the surface to achieve good dispersibility in various organic solvents. Background technique [0002] In 2004, Andre Geim and Konstantin Novoselov discovered a two-dimensional crystal of carbon with a single atomic layer structure, called graphene (Geim A K.Graphene: status and prospects [J]. Science, 2009, 324 (5934): 1530-1534.; Geim A K, Novoselov K S. The rise of graphene [J]. Naturematerials, 2007, 6(3):183-191.). This special single atomic layer structure determines that graphene exhibits many excellent properties, among which studies have shown that gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/757C07C67/11C08K9/04C08K3/04
CPCC07C69/757C07C67/11C08K3/04C08K9/04
Inventor 翁传欣刘璐琪张燕冰张忠
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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