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Preparation method of graphene nanosilver composite material

A composite material and graphene technology, applied in the direction of nanotechnology, can solve the problems of high cost, complicated production process, time-consuming and labor-consuming, etc., and achieve the effect of low cost, simple production process and improved electrical conductivity

Inactive Publication Date: 2016-10-05
颜秀珍
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AI Technical Summary

Problems solved by technology

The production process of graphene / nano-silver in the prior art is complex, costly, time-consuming and labor-intensive

Method used

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with specific embodiments.

[0013] A preparation method of graphene nano-silver composite material, comprising the steps of:

[0014] 1) Mixing: Graphene oxide and silver nitrate are mixed in a mass ratio of 1:2, placed in deionized water, and ultrasonically dispersed for more than 2 hours;

[0015] 2) Reaction: put the mixed solution in a container, stir at room temperature for more than 20 hours, add 80% hydrazine hydrate with a volume ratio of 2:1 to the mixed solution, and let stand at 95°C for more than 24 hours;

[0016] 3) Cleaning: first wash the reaction product with deionized water, and then wash the reaction product with absolute ethanol;

[0017] 4) Drying: vacuum-drying the cleaned product at 30° C. to obtain graphene nano-silver.

[0018] The present invention uses silver nitrate and graphene oxide as raw materials, adopts the in-situ reduction method to prepare graphene nano-silver ...

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Abstract

The invention discloses a preparation method of a graphene nanosilver composite material in the field of composite materials. The preparation method comprises the following steps: 1) mixing: oxide graphene and silver nitrate are mixed by a mass ratio of 1: 1.8-2.3, and are put in de-ionized water for ultrasonically dispersing by above 1 h; 2) reaction: the mixed liquid is put in a container to stir by above 18 h at room temperature; and hydrazine hydrate with a concentration of 80% and with a volume ratio of 2: 1 to the mixed liquid is added for standing by above 20 h at 95 DEG C; 3) cleaning: a reaction product is washed by the de-ionized water, and then, is washed by anhydrous ethanol; and 4) drying: the cleaned product is dried in vacuum at 30 DEG C to prepare graphene nanosilver. The prepared graphene / nanosilver composite material is excellent in electric conductivity, simple in production process and lower in cost, and saves the manpower and material resources.

Description

technical field [0001] The invention belongs to the field of composite materials, in particular to a graphene nano-silver composite material. Background technique [0002] Graphene has the characteristics of extremely high electron mobility, excellent thermal conductivity, anomalous quantum Hall effect at room temperature, dual polarization electric field effect, good light transmission, spin transport and high Young's modulus, making it suitable for use in composite materials. , energy storage devices, transparent electrodes, conductive inks and other fields have great application prospects. Silver is the metal with the highest electrical conductivity in nature, and nano-silver has a special electronic structure and a huge specific surface area. The unique properties of the two make the composite materials of graphene and nano-silver have important application prospects in the fields of nano-sensors, composite conductive paper, transparent conductive films, and low-tempera...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
Inventor 颜秀珍
Owner 颜秀珍
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