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Reduced graphene oxide and preparation method thereof

A graphene and graphene technology, applied in the field of reduced graphene oxide and its preparation, can solve the problems of low efficiency, high energy consumption, high temperature, etc., and achieve the effects of simple preparation process, reduced production cost, and high reduction efficiency

Active Publication Date: 2012-04-11
SICHUAN ANDGEM GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the problems of high temperature, toxicity, low efficiency and high energy consumption in the existing preparation method of reduced graphene oxide, thereby providing a novel efficient, economical and efficient method for reducing graphene oxide. Environmentally friendly preparation method

Method used

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  • Reduced graphene oxide and preparation method thereof
  • Reduced graphene oxide and preparation method thereof
  • Reduced graphene oxide and preparation method thereof

Examples

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Effect test

Embodiment 1

[0042] (1) Add a certain amount of methanol in the graphene oxide aqueous solution (1mg graphene oxide / mL water), shake and mix for 2min to obtain a mixed solution; the concentration of graphene oxide in the mixed solution is 0.5mg / mL, and the concentration of methanol is 50% (v / v%);

[0043] (2) Nitrogen gas bubbling for 10 minutes to remove the oxygen in the mixed solution, sealed and sent to cobalt-60 irradiation chamber, dose rate 0.882kGy / h, irradiated for 17h, to obtain the mixture;

[0044] (3) After the irradiation is completed, the resulting mixture is filtered through a PVDF microporous membrane with a pore size of 0.22 μm, and the filter cake is collected and dried to obtain reduced graphene oxide.

Embodiment 2

[0046] (1) Add a certain amount of ethanol to the graphene oxide aqueous solution (1mg graphene oxide / mL water), shake and mix for 2min to obtain a mixed solution; the concentration of graphene oxide in the mixed solution is 0.5mg / mL, and the concentration of methanol is 50 % (v / v%); the concentration of ethanol is 50% (v / v%);

[0047] (2) Nitrogen gas bubbling for 10 minutes to remove the oxygen in the mixed solution, sealed and sent to cobalt-60 irradiation chamber, dose rate 0.882kGy / h, irradiated for 17h, to obtain the mixture;

[0048] (3) After the irradiation is completed, the resulting mixture is filtered through a PVDF microporous membrane with a pore size of 0.22 μm, and the filter cake is collected and dried to obtain reduced graphene oxide.

Embodiment 3

[0050] (1) Add a certain amount of isopropanol to the graphene oxide aqueous solution (1mg graphene oxide / mL water), shake and mix for 2min to obtain a mixed solution; the concentration of graphene oxide in the mixed solution is 0.5mg / mL, isopropanol The concentration is 50% (v / v%);

[0051] (2) Nitrogen gas bubbling for 10 minutes to remove the oxygen in the mixed solution, sealed and sent to cobalt-60 irradiation chamber, dose rate 0.882kGy / h, irradiated for 17h, to obtain the mixture;

[0052] (3) After the irradiation is completed, the resulting mixture is filtered through a PVDF microporous membrane with a pore size of 0.22 μm, and the filter cake is collected and dried to obtain reduced graphene oxide.

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Abstract

The invention relates to a preparation method of reduced graphene oxide, which comprises the following steps of: mixing reducing agent with water solution of graphene oxide in the absence of oxygen, and carrying out irradiation reduction reaction by high-energy ray irradiation to obtain reduced graphene oxide, wherein the reducing agent is alcohol with one to eight carbon atoms. The invention overcomes the problems on high temperature, toxicity, low efficiency, high energy consumption and the like in the current preparation method of reduced graphene oxide, and a novel, high-efficiency, economical and environment-friendly preparation method of reduced graphene oxide is provided. The method provided by the invention has no need to modify the reduced graphene oxide before grafting, has no need of any special reagent and is simple to operate, which is a method that has wide application range and in particular can realize large scale batch production; and the reduced graphene oxide prepared by the invention has remarkably improved conductivity and broader application field.

Description

technical field [0001] The invention relates to a reduced graphene oxide and a preparation method thereof. Background technique [0002] Since its discovery, graphene has attracted intense attention in the scientific and technological circles. Its excellent mechanical properties, thermal and electrical properties, gas adsorption properties, magnetic properties, electrochemical properties, electronic doping properties, and the molecular charge transfer effect of electronic structure and properties have shown people the broad and fascinating application prospects of graphene (J .Wu, et al., Chem.Rev.2007, 107, 718; C.N.R.Rao, et al., J.Mater.Chem., 2009, 19, 2457; L.Dong, Q.Chen, Front.Mater.Sci . China 2010, 4, 45). [0003] There are many methods for preparing graphene, such as chemical method, vapor deposition method, epitaxial growth method, mechanical exfoliation method, organic total synthesis method and so on. Among them, the chemical method is considered to be a met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 李景烨张伯武黄庆于洋李林繁邓波虞鸣
Owner SICHUAN ANDGEM GRAPHENE TECH CO LTD
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