Preparation method of monolayer graphene

A technology of single-layer graphene and graphene, applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of human body and environmental harm, severe toxicity, etc., and achieve good stability, good biocompatibility, effective Conducive to the effect of environmental protection
CN101973543AActive Publication Date: 2011-02-16SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
Publication Date
2011-02-16

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Abstract

The invention provides a preparation method of monolayer grapheme, in which graphene oxide solid is taken as an initial raw material. The preparation method comprises the following steps of respectively dispersing graphene oxide and a polymeric surfactant into dimethylformamide; uniformly blending the two solutions to react for 1 to 2 hours at the temperature of 140 to 160 DEG C; cooling to room temperature; filtering to obtain the graphene oxide solid; and dispersing the graphene oxide solid into water to form the monolayer graphene protected by polymers. In the preparation of the monolayer grapheme according to the method of the invention, a common toxic and harmful reducing agent in the prior art is omitted; the thermal reduction of the graphene oxide is carried out; the organic solvent dimethylformamide has the assistance action in the process of reduction; and the method has the advantages of no pollution on environment, simple technique, low raw material cost and available raw materials, is beneficial to environment protection, convenient for operation and suitable for low-cost and mass production.
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Description

technical field

[0001] The invention relates to a preparation method of nanomaterials, in particular to a preparation method of single-layer graphene. Background technique

[0002] Graphene is a new two-dimensional honeycomb carbonaceous material formed by densely packed carbon atoms. The thickness of the crystal film is only 0.335nm, which is only 1 / 200,000th that of hair. It is the basic unit for constructing other dimensional carbon materials. , which can be warped into zero-dimensional fullerenes, rolled into one-dimensional carbon nanotubes or stacked into three-dimensional graphite and diamond. The theoretical specific surface area of ​​graphene is as high as 2630m 2 / g, outstanding thermal conductivity (5000W / (m K)), excellent mechanical properties, Young's modulus up to 1100GPa, fracture strength up to 125GPa, and high-speed electron mobility at room temperature. Graphene's unique structure makes it have a series of properties such as perfect quantum tunneling effe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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