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Application of graphene and molybdenum disulfide composite material as electromagnetic wave absorption material

A technology of molybdenum disulfide and composite materials, which is applied in electrical components, antennas and other directions to achieve the effects of strong absorption capacity, simple preparation process and low cost

Active Publication Date: 2016-03-23
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, no research has found that the composite material of graphene and molybdenum disulfide has the properties of electromagnetic wave absorber.

Method used

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  • Application of graphene and molybdenum disulfide composite material as electromagnetic wave absorption material
  • Application of graphene and molybdenum disulfide composite material as electromagnetic wave absorption material
  • Application of graphene and molybdenum disulfide composite material as electromagnetic wave absorption material

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The electromagnetic wave absorbing material is a composite material of graphene and molybdenum dioxide, which is prepared by the following method:

[0048] (1) Mix 2g of graphite powder with 100mL of concentrated sulfuric acid (98%), stir and react in an ice bath for 3 hours, then slowly add 8gKMnO 4 , continue to stir for 2 hours, then slowly add 200 mL of deionized water, after stirring for 0.5 hours, add 10 mL of H 2 o 2 (30%), obtain bright yellow graphite oxide dispersion at this moment; Obtain graphite oxide powder after the graphite oxide dispersion is filtered, freeze-dried; Described graphite oxide powder is dissolved in deionized water and is made into the centrifugation after the solution, takes The supernatant is dried to obtain graphene oxide;

[0049] (2) Add 40 mg of graphene oxide obtained in step (1) into 10 mL of deionized water to form a graphene oxide solution, add 80 mg of sodium molybdate to the graphene oxide solution, and ultrasonically dispers...

Embodiment 2

[0072] The difference from Example 1 is that in step (2), the mixing ratio of graphene oxide and sodium molybdate is: the molar ratio of carbon atoms to sulfur atoms is 1:10.

Embodiment 3

[0074] The difference from Example 1 is that in step (2), the mixing ratio of graphene oxide and sodium molybdate is: the molar ratio of carbon atoms to sulfur atoms is 10:1.

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Abstract

The invention discloses an application of a graphene and molybdenum disulfide composite material as an electromagnetic wave absorption material. The invention furthermore discloses the electromagnetic wave absorption material which is the graphene and molybdenum disulfide composite material. The graphene and molybdenum disulfide composite material can be used as the electromagnetic wave absorption material and is applied to electromagnetic shielding or electromagnetic protection measures, a new application of the graphene and molybdenum disulfide composite material is opened up, and a new choice is provided for the electromagnetic wave absorption material; and the electromagnetic wave absorption material provided by the invention has relatively high electromagnetic wave absorption performance and is a novel wave absorption material with light weight, wide absorption frequency band and good absorption capability.

Description

technical field [0001] The invention belongs to the field of electromagnetic wave absorbing materials, in particular to the application of a graphene and molybdenum disulfide composite material as an electromagnetic wave absorbing material, and in particular to the use of the graphene and molybdenum disulfide composite material as an electromagnetic wave shielding material or an electromagnetic wave protection material. Background technique [0002] With the development of modern science and technology and the progress of industrial civilization, the application of various electronic instruments and equipment is becoming more and more common, generating more and more electromagnetic radiation, and the electromagnetic interference is becoming more and more serious, which has become a problem for many equipment failures. At the same time, electromagnetic pollution also penetrates into all aspects of production and life, seriously damaging human health. Therefore, how to effect...

Claims

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Application Information

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IPC IPC(8): H01Q17/00
CPCH01Q17/00
Inventor 王艳芳吴凡贺蒙殷雄徐鹏陈东梁
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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