Three-dimensional structure aerogel with copper nanowires coated with graphene and preparation method of three-dimensional structure aerogel and application of three-dimensional structure aerogel

A graphene-coated, copper nanowire technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as poor compression resilience and performance changes of materials, and achieve low cost, The effect of uniform pore distribution and simple operation process

Inactive Publication Date: 2016-07-20
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0003] However, in the current preparation method of graphene-copper composite materials, the change of the sha...

Method used

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  • Three-dimensional structure aerogel with copper nanowires coated with graphene and preparation method of three-dimensional structure aerogel and application of three-dimensional structure aerogel
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  • Three-dimensional structure aerogel with copper nanowires coated with graphene and preparation method of three-dimensional structure aerogel and application of three-dimensional structure aerogel

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preparation example Construction

[0028] see figure 1 , the preparation method of the graphene-coated three-dimensional structure airgel of copper nanowire of one embodiment, comprises steps:

[0029] S110, dispersing the graphene oxide in deionized water to form a graphene oxide dispersion.

[0030] Specifically, the concentration of the graphene oxide dispersion is 1-5 mg / mL.

[0031] S120, dissolving copper nitrate trihydrate particles in deionized water to form Cu(NO 3 ) 2 solution.

[0032] Specifically, Cu(NO 3 ) 2 The concentration of the solution is 0.05-0.2 mol / L.

[0033] S130, the Cu(NO 3 ) 2 After the solution is mixed and stirred with the graphene oxide dispersion liquid, a uniform mixed dispersion liquid is obtained.

[0034] Specifically, 10-30 mL of 0.05-0.2 mol / L Cu(NO 3 ) 2 The solution is mixed with 5-15 mL of 1-5 mg / mL graphene oxide dispersion.

[0035] S140. Add an ethylenediamine solution with a mass fraction of 60%-99.5% to the mixed dispersion liquid, after stirring, add on...

Embodiment 1

[0043] 20 mL of Cu(NO with a concentration of 0.05 mol / L 3 ) 2The solution was mixed evenly with 5 mL of graphene oxide aqueous solution with a concentration of 1 mg / mL. Then add 3mL of 80% ethylenediamine solution, stir for 20min, then add 250mL of 5mol / L NaOH solution and continue stirring for 45min, then add 0.3mL of 35% hydrazine hydrate solution, and sonicate for 25min, and the resulting solution is dissolved at 70 ℃ water bath conditions for 25min. After the reaction, a reddish-brown product will be obtained. The reddish-brown product was washed by centrifugation with deionized water and ethanol solution respectively, and the reddish-brown powder was obtained after vacuum drying.

[0044] Take an appropriate amount of reddish-brown powder, prepare a 10mg / mL solution, take 3 small bottles, and prepare polyvinyl alcohol solutions with a concentration of 10mg / mL, 15mg / mL, and 20mg / mL respectively. Take 3 beakers (marked A~C respectively) and add 1mL of 10mg / mL graphene-...

Embodiment 2

[0046] 20 mL of Cu(NO with a concentration of 0.1 mol / L 3 ) 2 The solution was mixed evenly with 5 mL of graphene oxide aqueous solution with a concentration of 2 mg / mL. Then add 4 mL of 99% ethylenediamine solution, stir for 20 min, then add 350 mL of 10 mol / L KOH solution and continue stirring for 45 min. Finally, 0.4 mL of 85% hydrazine hydrate solution was added and ultrasonicated for 25 min, and the resulting solution was reacted in a water bath at 80° C. for 30 min. After the reaction, a reddish-brown product will be obtained. The reddish-brown product was washed by centrifugation with deionized water and ethanol solution respectively, and the reddish-brown powder was obtained after vacuum drying.

[0047] Take an appropriate amount of reddish-brown powder and make it into a 20mg / mL solution. Take 3 small bottles and prepare sodium alginate solutions with concentrations of 10mg / mL, 15mg / mL and 20mg / mL respectively. Take 3 beakers (marked D~F respectively) and add 1mL...

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Abstract

The invention relates to a preparation method of three-dimensional structure aerogel with copper nanowires coated with graphene. The method includes the steps that graphene oxide dispersion liquid and a Cu(NO3)2 solution are mixed to obtain mixed dispersion liquid; an ethylenediamine solution is added, then one of strong alkaline solutions such as NaOH and KOH is added, after a mixture is continuously stirred, a reducing agent is added, ultrasonic treatment is conducted for 15 min to 30 min, the mixture is then placed under the water bath condition at the temperature from 60 DEG C to 90 DEG C to react for 25 min to 50 min, and a reddish brown product is obtained; the reddish brown product is subjected to centrifugal washing and vacuum drying, so that reddish brown powder is obtained; a solution of 10 mg/mL to 30 mg/mL is prepared, at least one of a sodium alga acid solution of 10 mg/mL to 20 mg/mL, a polyvinyl alcohol solution, a chitosan solution and a gelatin solution is added, the solutions are evenly mixed and then placed in the environment at the temperature ranging from -5 DEG C to -20 DEG C to be frozen for 2 h to 5 h, freeze-drying is then conducted for 2 d to 5 d, and therefore the three-dimensional structure aerogel with the copper nanowires coated with the graphene is obtained. The invention further relates to the three-dimensional structure aerogel with the copper nanowires coated with the graphene and an application. The three-dimensional structure aerogel is unlikely to be oxidized and has good compression resilience performance.

Description

technical field [0001] The invention belongs to nanomaterial preparation technology, in particular to a three-dimensional structure airgel of graphene-coated copper nanowires and its preparation method and application. Background technique [0002] Although the performance of gold and silver nanowires can be compared with that of ITO, they are also expensive. However, copper nanowires have attracted more and more attention because of their low price, abundant reserves, and good conductivity. Copper nanowires have high electrical conductivity, remarkable mechanical and optical properties, which make them have very important application prospects in related fields. However, the easy oxidation of copper nanowires limits its application in some aspects. The research on graphene as an effective anti-corrosion and anti-oxidation material has gradually become a hot spot. When graphene is covered on the metal surface, it can increase the activation energy of oxidizing substances i...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y30/00B82Y40/00H01G11/24H01G11/32H01G11/86
CPCY02E60/13H01G11/24B22F9/24B82Y30/00B82Y40/00H01G11/32H01G11/86
Inventor 孙蓉朱玉胡友根朱朋莉
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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