Method for repairing oxidized graphene by organic matter containing amino group at low temperature

A repair method and amino group technology, which is applied in the field of repairing oxidized graphene, can solve problems such as explosion and fast reaction speed of sodium borohydride, and achieve the effects of low reaction temperature, non-toxic reaction system, and improved electrical conductivity
CN101774575AInactive Publication Date: 2010-07-14SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Publication Date
2010-07-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for repairing oxidized graphene by an organic matter containing an amino group at low temperature, which is characterized by comprising the following steps of: reducing the oxidized graphene with defects by an organic matter containing an amino group; filtering all matters after reduction and removing an excessive reducing matter without any matter retained on the graphene; and finally drying. The invention has simple, convenient and easily-applied operation, low reaction temperature and non-toxic reaction system. The reaction can be carried out in a solid phase and a liquid phase, and the operating process can not introduce a new matter or group and cause damage in other ways to the graphene. The graphene repaired by the method greatly has greatly reduced carbonyl content and the conducting performance improved by more than six magnitude orders. Furthermore, the method can be also used for repairing a graphene conducting thin film so that the graphene conducting thin film is changed into a conductor from an insulator. The invention has general applicable significance for fully exerting various specific physical and chemical performance of the graphene.
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Description

technical field

[0001] The present invention relates to a method for repairing oxidized graphene with amino-group-containing organic matter at low temperature, more precisely, relates to a method for repairing oxidized graphene containing carbonyl functional groups on the surface at low temperature. After treatment, the conductivity of graphene has increased by more than 6 orders of magnitude. This method can also be used to repair graphene conductive films, making them change from insulators to conductors. Background technique

[0002] Graphene, which has been evaluated as the thinnest material in nature in recent years, has a sheet thickness of only about one atom. Its constituent units are carbon atoms with SP 2 bonded hexahedron. Due to its special structure, it has a wide range of applications in composite materials, quantum dots, and thin films. Single-layer graphene is generally produced by strong acid substances, which undergo a violent oxidation reaction on grap...

Claims

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