Preparation method for magnetic graphene nanobelt/graphene composite film

A graphene nanoribbon and magnetic graphene technology, applied in the field of carbon nanomaterials, can solve problems such as cracks and reduced mechanical strength of materials, and achieve the effects of low cost, less process and strong controllability

Active Publication Date: 2016-12-07
重庆锦添翼新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention does not use other auxiliary transfer substances, does not introduce new impurities to contaminate or destroy the structure of graphene, and is easy to operate and time-saving. However, the polycrystalline characteristics of graphene easily lead to cracks and reduce the mechanical strength of the material.

Method used

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  • Preparation method for magnetic graphene nanobelt/graphene composite film
  • Preparation method for magnetic graphene nanobelt/graphene composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The concrete steps of the preparation method of a kind of magnetic graphene nanobelt / graphene composite film are as follows:

[0033] 1) Loaded graphene nanoribbons

[0034]Put 9.2mg of F127 into 10ml of deionized water, stir well to obtain solution A with the concentration of F127 substance being 0.009mol / L; add 8.4mg of GNRs to solution A, and obtain GNRs substance after ultrasonic dispersion in an ice bath The concentration of the mixed solution B is 0.07mol / L, and the graphene nanoribbon in the mixed solution B is evenly loaded on the copper foil C, and the loading amount of the graphene nanoribbon on the metal foil C is 6 mg / cm 2 . Among them, the ultrasonic power is 85W, and the ultrasonic time is 20min.

[0035] 2) Graphene Nanoribbon Toughened Graphene Prepared by Chemical Vapor Deposition (CVD)

[0036] Turn on Ar, place the copper foil C described in step 1) in the constant temperature zone of the CVD furnace, and then turn off Ar. Vacuum down to -0.1MPa, ...

Embodiment 2

[0044] A kind of preparation method of magnetic graphene nanobelt / graphene composite film, with embodiment 1, wherein: in the 1st) step, 41.8mg SDBS is put into 60ml deionized water, after stirring, obtain the amount concentration of SDBS substance as 0.002mol / L solution A; add 61.2mg GNRs into solution A, and disperse evenly in an ice bath with 60W ultrasound for 30min to obtain a mixed solution B with a GNRs substance concentration of 0.085mol / L, and mix the mixed solution B evenly Spin-coated on copper foil C, the loading of graphene nanoribbons on copper foil C was 9.2 mg / cm 2 .

[0045] In step 2), Ar is turned on, the copper foil C described in step 1) is placed in the central chamber of the CVD furnace, and then Ar is turned off. Open H after vacuuming 2 , at 450sccm H 2 Heat reduction at 1100°C for 10min, then in 450sccm H 2 and 8 sccm CH 4 Chemical vapor phase growth in a mixed gas atmosphere for 15 minutes. Finally, the copper foil was quickly removed from the c...

Embodiment 3

[0049] A kind of preparation method of magnetic graphene nanoribbon / graphene composite film, with embodiment 1, wherein: in the 1st) step, 23.1mg SDS is put into 10ml deionized water, after stirring, obtain the amount concentration of SDS substance as 0.008mol / L solution A; add 6.24mg GNRs into solution A, and disperse evenly in an ice bath with 30W ultrasound for 60min to obtain a mixed solution B with a GNRs substance concentration of 0.052mol / L, and mix the mixed solution B evenly Sprayed on copper foil C, the loading capacity of graphene nanoribbons on copper foil C is 6mg / cm 2 .

[0050] In step 2), Ar is turned on, the copper foil C described in step 1) is placed in the central chamber of the CVD furnace, and then Ar is turned off. Open H after vacuuming 2 , at 300sccm H 2 Heat reduction at 900°C for 30min, then in 300sccm H 2 and 15 sccm CH 4 Chemical vapor phase growth in a mixed gas atmosphere for 50 minutes. Finally, the copper foil was quickly removed from the ...

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Abstract

The invention provides a preparation method for a magnetic graphene nanobelt/graphene composite film. According to the preparation method, ferromagnetic metal nanoparticles wrapped with carbon nano onions grow on the surface of the graphene nanobelt and the surface of the graphene composite film in an in-situ growth manner through a two-step chemical vapor deposition method. The graphene composite film can be transferred to a target matrix without the assistance of a polymer during the transfer process and has the beneficial effects of strong in magnetism, high in optical transparency and high in hole/electron mobility. In addition, the ferromagnetic metal nanoparticles are wrapped with shells of the carbon nano onions so that oxidation, acidification, shedding and the like of the ferromagnetic metal nanoparticles can be avoided, so that the graphene composite film has high strength and good stability. By the adoption of the preparation method, the magnetic graphene composite film can be obtained through macroscopic preparation by the adoption of the two-step chemical vapor deposition method; by the adoption of the method, the technological process is simple, the cost is low, and large-scale production is facilitated; and the method can be widely applied to graphene spintronic devices, electromagnetic wave absorbing materials, flexible graphene film electronic devices and the like.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterials, specifically relates to the technical field of carbon nanomaterials, and more specifically relates to a preparation method of a magnetic graphene nanobelt / graphene composite film. Background technique [0002] In the carbon nanomaterials industry, graphene has broad application prospects in optoelectronic and microelectronic devices such as flexible electronic components, high-frequency transistors and logic devices due to its unique flexibility, optical and electrical properties. At present, in industrial production, chemical vapor deposition (CVD) is mainly used to prepare and grow large-area single-layer graphene films on transition metal substrates, and transfer them to other substrates with the assistance of polymer coatings. This method has low cost and high yield. The advantages of good quality and high controllability are considered to be the most promising synthetic route. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/26C23C16/01C23C18/12C23C28/04
CPCC23C16/01C23C16/26C23C18/1216C23C18/1241C23C18/125C23C28/04
Inventor 李新禄粟泽龙赵奚誉张艳艳赵昱颉张欣琳王荣华
Owner 重庆锦添翼新能源科技有限公司
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